Remove the "Explicit" tag that was conflicting with the "LongRunning" category tag. Now the tests that are long running can be properly excluded using the category exclusion feature of NUnit.
diff --git a/src/test/csharp/MessageSelectorTest.cs b/src/test/csharp/MessageSelectorTest.cs
index d94a710..4208fb4 100644
--- a/src/test/csharp/MessageSelectorTest.cs
+++ b/src/test/csharp/MessageSelectorTest.cs
@@ -51,7 +51,7 @@
/// Since this test can take a long time to run, it is marked as explicit.
/// </summary>
/// <param name="destinationName"></param>
- [Test, Explicit]
+ [Test]
public void FilterIgnoredMessagesSlowConsumerTest(
[Values(QUEUE_DESTINATION_NAME, TOPIC_DESTINATION_NAME)]
string destinationName)
