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<article class="content wrap" id="_content" data-uid="Lucene.Net.RandomExtensions">
<h1 id="Lucene_Net_RandomExtensions" data-uid="Lucene.Net.RandomExtensions" class="text-break">Class RandomExtensions
</h1>
<div class="markdown level0 summary"><p>Extensions to <span class="xref">System.Random</span> in order to randomly generate
types and specially formatted strings that assist with testing
custom extensions to Lucene.Net.</p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">RandomExtensions</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<span class="xref">System.Object.Equals(System.Object)</span>
</div>
<div>
<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.GetHashCode()</span>
</div>
<div>
<span class="xref">System.Object.GetType()</span>
</div>
<div>
<span class="xref">System.Object.MemberwiseClone()</span>
</div>
<div>
<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.html">Lucene.Net</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.TestFramework.dll</h6>
<h5 id="Lucene_Net_RandomExtensions_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static class RandomExtensions</code></pre>
</div>
<h3 id="methods">Methods
</h3>
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</span>
<a id="Lucene_Net_RandomExtensions_NextAnalysisString_" data-uid="Lucene.Net.RandomExtensions.NextAnalysisString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextAnalysisString_System_Random_System_Int32_System_Boolean_" data-uid="Lucene.Net.RandomExtensions.NextAnalysisString(System.Random,System.Int32,System.Boolean)">NextAnalysisString(Random, Int32, Boolean)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextAnalysisString(this Random random, int maxLength, bool simple)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><span class="parametername">simple</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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</span>
<a id="Lucene_Net_RandomExtensions_NextBoolean_" data-uid="Lucene.Net.RandomExtensions.NextBoolean*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextBoolean_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextBoolean(System.Random)">NextBoolean(Random)</h4>
<div class="markdown level1 summary"><p>Generates a random <span class="xref">System.Boolean</span>, with a random distribution of
approximately 50/50.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static bool NextBoolean(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td><p>This <span class="xref">System.Random</span>.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><p>A random <span class="xref">System.Boolean</span>.</p>
</td>
</tr>
</tbody>
</table>
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</span>
<a id="Lucene_Net_RandomExtensions_NextFilterStrategy_" data-uid="Lucene.Net.RandomExtensions.NextFilterStrategy*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextFilterStrategy_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextFilterStrategy(System.Random)">NextFilterStrategy(Random)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static FilteredQuery.FilterStrategy NextFilterStrategy(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Search.FilteredQuery.FilterStrategy</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextFixedByteLengthUnicodeString_" data-uid="Lucene.Net.RandomExtensions.NextFixedByteLengthUnicodeString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextFixedByteLengthUnicodeString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextFixedByteLengthUnicodeString(System.Random,System.Int32)">NextFixedByteLengthUnicodeString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns random string, with a given UTF-8 byte <code data-dev-comment-type="paramref" class="paramref">length</code>. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextFixedByteLengthUnicodeString(this Random random, int length)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_RandomExtensions_NextFixedLengthUnicodeString_System_Random_System_Char___System_Int32_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextFixedLengthUnicodeString(System.Random,System.Char[],System.Int32,System.Int32)">NextFixedLengthUnicodeString(Random, Char[], Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Fills provided <span class="xref">char[]</span> with valid random unicode code
unit sequence.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void NextFixedLengthUnicodeString(this Random random, char[] chars, int offset, int length)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">chars</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextFrom_" data-uid="Lucene.Net.RandomExtensions.NextFrom*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextFrom__1_System_Random_System_Collections_Generic_ICollection___0__" data-uid="Lucene.Net.RandomExtensions.NextFrom``1(System.Random,System.Collections.Generic.ICollection{``0})">NextFrom&lt;T&gt;(Random, ICollection&lt;T&gt;)</h4>
<div class="markdown level1 summary"><p>Pick a random object from the <code data-dev-comment-type="paramref" class="paramref">collection</code>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static T NextFrom&lt;T&gt;(this Random random, ICollection&lt;T&gt; collection)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Collections.Generic.ICollection</span>&lt;T&gt;</td>
<td><span class="parametername">collection</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">T</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="typeParameters">Type Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="parametername">T</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextHtmlishString_" data-uid="Lucene.Net.RandomExtensions.NextHtmlishString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextHtmlishString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextHtmlishString(System.Random,System.Int32)">NextHtmlishString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random HTML-like string.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextHtmlishString(this Random random, int numElements)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">numElements</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextInt64_" data-uid="Lucene.Net.RandomExtensions.NextInt64*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextInt64_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextInt64(System.Random)">NextInt64(Random)</h4>
<div class="markdown level1 summary"><p>Generates a random <span class="xref">System.Int64</span>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long NextInt64(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td><p>This <span class="xref">System.Random</span>.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>A random <span class="xref">System.Int64</span>.</p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextInt64_" data-uid="Lucene.Net.RandomExtensions.NextInt64*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextInt64_System_Random_System_Int64_" data-uid="Lucene.Net.RandomExtensions.NextInt64(System.Random,System.Int64)">NextInt64(Random, Int64)</h4>
<div class="markdown level1 summary"><p>Generates a random <span class="xref">System.Int64</span> between <code>0</code> (inclusive)
and <code data-dev-comment-type="paramref" class="paramref">n</code> (exclusive).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long NextInt64(this Random random, long n)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td><p>This <span class="xref">System.Random</span>.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">n</span></td>
<td><p>The bound on the random number to be returned. Must be positive.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>A random <span class="xref">System.Int64</span> between 0 and <code data-dev-comment-type="paramref" class="paramref">n</code>-1.</p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextInt64_" data-uid="Lucene.Net.RandomExtensions.NextInt64*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextInt64_System_Random_System_Int64_System_Int64_" data-uid="Lucene.Net.RandomExtensions.NextInt64(System.Random,System.Int64,System.Int64)">NextInt64(Random, Int64, Int64)</h4>
<div class="markdown level1 summary"><p>Generates a random <span class="xref">System.Int64</span>. <code data-dev-comment-type="paramref" class="paramref">start</code> and <code data-dev-comment-type="paramref" class="paramref">end</code> are BOTH inclusive.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long NextInt64(this Random random, long start, long end)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td><p>This <span class="xref">System.Random</span>.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">start</span></td>
<td><p>The inclusive start.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">end</span></td>
<td><p>The inclusive end.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>A random <span class="xref">System.Int64</span>.</p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextRealisticUnicodeString_" data-uid="Lucene.Net.RandomExtensions.NextRealisticUnicodeString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextRealisticUnicodeString_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextRealisticUnicodeString(System.Random)">NextRealisticUnicodeString(Random)</h4>
<div class="markdown level1 summary"><p>Returns random string of length between 0-20 codepoints, all codepoints within the same unicode block. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRealisticUnicodeString(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_RandomExtensions_NextRealisticUnicodeString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextRealisticUnicodeString(System.Random,System.Int32)">NextRealisticUnicodeString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns random string of length up to maxLength codepoints, all codepoints within the same unicode block. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRealisticUnicodeString(this Random random, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_RandomExtensions_NextRealisticUnicodeString_System_Random_System_Int32_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextRealisticUnicodeString(System.Random,System.Int32,System.Int32)">NextRealisticUnicodeString(Random, Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Returns random string of length between min and max codepoints, all codepoints within the same unicode block. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRealisticUnicodeString(this Random random, int minLength, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">minLength</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_RandomExtensions_NextRecasedString_System_Random_System_String_" data-uid="Lucene.Net.RandomExtensions.NextRecasedString(System.Random,System.String)">NextRecasedString(Random, String)</h4>
<div class="markdown level1 summary"><p>Randomly upcases, downcases, or leaves intact each code point in the given string.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRecasedString(this Random random, string str)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">str</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextRegex_" data-uid="Lucene.Net.RandomExtensions.NextRegex*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextRegex_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextRegex(System.Random)">NextRegex(Random)</h4>
<div class="markdown level1 summary"><p>Returns a valid (compiling) <span class="xref">System.Text.RegularExpressions.Regex</span> instance with random stuff inside. Be careful
when applying random patterns to longer strings as certain types of patterns
may explode into exponential times in backtracking implementations (such as Java&apos;s).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static Regex NextRegex(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Text.RegularExpressions.Regex</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextRegexishString_" data-uid="Lucene.Net.RandomExtensions.NextRegexishString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextRegexishString_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextRegexishString(System.Random)">NextRegexishString(Random)</h4>
<div class="markdown level1 summary"><p>Returns a <span class="xref">System.String</span> thats &quot;regexish&quot; (contains lots of operators typically found in regular expressions)
If you call this enough times, you might get a valid regex!</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRegexishString(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextRegexishString_" data-uid="Lucene.Net.RandomExtensions.NextRegexishString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextRegexishString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextRegexishString(System.Random,System.Int32)">NextRegexishString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a <span class="xref">System.String</span> thats &quot;regexish&quot; (contains lots of operators typically found in regular expressions)
If you call this enough times, you might get a valid regex!</p>
<p><p>Note: to avoid practically endless backtracking patterns we replace asterisk and plus
operators with bounded repetitions. See LUCENE-4111 for more info.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextRegexishString(this Random random, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td><p>A hint about maximum length of the regexpish string. It may be exceeded by a few characters. </p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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</span>
<a id="Lucene_Net_RandomExtensions_NextSimpleString_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSimpleString_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString(System.Random)">NextSimpleString(Random)</h4>
<div class="markdown level1 summary"><p>Returns a random string consisting only of lowercase characters &apos;a&apos; through &apos;z&apos;,
between 0 and 20 characters in length.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextSimpleString(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextSimpleString_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSimpleString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString(System.Random,System.Int32)">NextSimpleString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random string consisting only of lowercase characters &apos;a&apos; through &apos;z&apos;.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextSimpleString(this Random random, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextSimpleString_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSimpleString_System_Random_System_Int32_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextSimpleString(System.Random,System.Int32,System.Int32)">NextSimpleString(Random, Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random string consisting only of lowercase characters &apos;a&apos; through &apos;z&apos;.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextSimpleString(this Random random, int minLength, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">minLength</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextSimpleStringRange_" data-uid="Lucene.Net.RandomExtensions.NextSimpleStringRange*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSimpleStringRange_System_Random_System_Char_System_Char_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextSimpleStringRange(System.Random,System.Char,System.Char,System.Int32)">NextSimpleStringRange(Random, Char, Char, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random string consisting only of characters between <code data-dev-comment-type="paramref" class="paramref">minChar</code> and <code data-dev-comment-type="paramref" class="paramref">maxChar</code>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextSimpleStringRange(this Random random, char minChar, char maxChar, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Char</span></td>
<td><span class="parametername">minChar</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Char</span></td>
<td><span class="parametername">maxChar</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextSingle_" data-uid="Lucene.Net.RandomExtensions.NextSingle*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSingle_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextSingle(System.Random)">NextSingle(Random)</h4>
<div class="markdown level1 summary"><p>Generates a random <span class="xref">System.Single</span>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static float NextSingle(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td><p>This <span class="xref">System.Random</span>.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Single</span></td>
<td><p>A random <span class="xref">System.Single</span>.</p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextSubString_" data-uid="Lucene.Net.RandomExtensions.NextSubString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextSubString_System_Random_System_Int32_System_Boolean_" data-uid="Lucene.Net.RandomExtensions.NextSubString(System.Random,System.Int32,System.Boolean)">NextSubString(Random, Int32, Boolean)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextSubString(this Random random, int wordLength, bool simple)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">wordLength</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><span class="parametername">simple</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextUnicodeString_" data-uid="Lucene.Net.RandomExtensions.NextUnicodeString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextUnicodeString_System_Random_" data-uid="Lucene.Net.RandomExtensions.NextUnicodeString(System.Random)">NextUnicodeString(Random)</h4>
<div class="markdown level1 summary"><p>Returns random string, including full unicode range. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextUnicodeString(this Random random)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextUnicodeString_" data-uid="Lucene.Net.RandomExtensions.NextUnicodeString*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextUnicodeString_System_Random_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextUnicodeString(System.Random,System.Int32)">NextUnicodeString(Random, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random string up to a certain length.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextUnicodeString(this Random random, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_RandomExtensions_NextWhitespace_" data-uid="Lucene.Net.RandomExtensions.NextWhitespace*"></a>
<h4 id="Lucene_Net_RandomExtensions_NextWhitespace_System_Random_System_Int32_System_Int32_" data-uid="Lucene.Net.RandomExtensions.NextWhitespace(System.Random,System.Int32,System.Int32)">NextWhitespace(Random, Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Returns a random string in the specified length range consisting
entirely of whitespace characters.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NextWhitespace(this Random random, int minLength, int maxLength)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Random</span></td>
<td><span class="parametername">random</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">minLength</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">maxLength</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="Lucene_Net_RandomExtensions_NextWhitespace_System_Random_System_Int32_System_Int32__seealso">See Also</h5>
<div class="seealso">
<div><a class="xref" href="Lucene.Net.Util.TestUtil.html#Lucene_Net_Util_TestUtil_WHITESPACE_CHARACTERS">WHITESPACE_CHARACTERS</a></div>
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