| <html dir="LTR"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252" /> |
| <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5" /> |
| <title>OptionConverter.SubstituteVariables Method</title> |
| <xml> |
| </xml> |
| <link rel="stylesheet" type="text/css" href="MSDN.css" /> |
| </head> |
| <body id="bodyID" class="dtBODY"> |
| <div id="nsbanner"> |
| <div id="bannerrow1"> |
| <table class="bannerparthead" cellspacing="0"> |
| <tr id="hdr"> |
| <td class="runninghead">Apache log4net� SDK Documentation - Microsoft .NET Framework 4.0</td> |
| <td class="product"> |
| </td> |
| </tr> |
| </table> |
| </div> |
| <div id="TitleRow"> |
| <h1 class="dtH1">OptionConverter.SubstituteVariables�Method�</h1> |
| </div> |
| </div> |
| <div id="nstext"> |
| <p> Performs variable substitution in string <i>value</i> from the values of keys found in <i>props</i>. </p> |
| <div class="syntax"> |
| <span class="lang">[Visual�Basic]</span> |
| <br />Public�Shared�Function�SubstituteVariables( _<br />���ByVal <i>value</i>�As�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemStringClassTopic.htm">String</a>,�_<br />���ByVal <i>props</i>�As�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemCollectionsIDictionaryClassTopic.htm">IDictionary</a>�_<br />)�As�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemStringClassTopic.htm">String</a></div> |
| <div class="syntax"> |
| <span class="lang">[C#]</span> |
| <br />public�static�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemStringClassTopic.htm">string</a>�SubstituteVariables(<br />���<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemStringClassTopic.htm">string</a>�<i>value</i>,<br />���<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemCollectionsIDictionaryClassTopic.htm">IDictionary</a>�<i>props</i><br />);</div> |
| <h4 class="dtH4">Parameters</h4> |
| <dl> |
| <dt> |
| <i>value</i> |
| </dt> |
| <dd>The string on which variable substitution is performed.</dd> |
| <dt> |
| <i>props</i> |
| </dt> |
| <dd>The dictionary to use to lookup variables.</dd> |
| </dl> |
| <h4 class="dtH4">Return Value</h4> |
| <p>The result of the substitutions.</p> |
| <h4 class="dtH4">Remarks</h4> |
| <p> The variable substitution delimiters are <b>${</b> and <b>}</b>. </p> |
| <p> For example, if props contains <code>key=value</code>, then the call </p> |
| <p> |
| <pre class="code"><span class="lang">[C#] |
| </span>string s = OptionConverter.SubstituteVariables("Value of key is ${key}."); |
| </pre> |
| </p> |
| <p> will set the variable <code>s</code> to "Value of key is value.". </p> |
| <p> If no value could be found for the specified key, then substitution defaults to an empty string. </p> |
| <p> For example, if system properties contains no value for the key "nonExistentKey", then the call </p> |
| <p> |
| <pre class="code"><span class="lang">[C#] |
| </span>string s = OptionConverter.SubstituteVariables("Value of nonExistentKey is [${nonExistentKey}]"); |
| </pre> |
| </p> |
| <p> will set <s>s</s> to "Value of nonExistentKey is []". </p> |
| <p> An Exception is thrown if <i>value</i> contains a start delimiter "${" which is not balanced by a stop delimiter "}". </p> |
| <h4 class="dtH4">See Also</h4><p><a href="log4net.Util.OptionConverter.html">OptionConverter Class</a> | <a href="log4net.Util.html">log4net.Util Namespace</a></p><object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e" viewastext="true" style="display: none;"><param name="Keyword" value="SubstituteVariables method"></param><param name="Keyword" value="SubstituteVariables method, OptionConverter class"></param><param name="Keyword" value="OptionConverter.SubstituteVariables method"></param></object><hr /><div id="footer"><a href='http://logging.apache.org/log4net/'>Copyright 2004-2011 The Apache Software Foundation.</a><br></br>Apache log4net, Apache and log4net are trademarks of The Apache Software Foundation.</div></div> |
| </body> |
| </html> |
