Fixed completion bug.

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -2439,6 +2439,10 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				return namespaceContents.Result;
 			}
 			IType type = resolveResult.Type;
+
+			if (type.Namespace == "System" && type.Name == "Void")
+				return null;
+
 			if (resolvedNode.Parent is PointerReferenceExpression && (type is PointerType)) {
 				resolveResult = new OperatorResolveResult (((PointerType)type).ElementType, System.Linq.Expressions.ExpressionType.Extension, resolveResult);
 			}

ICSharpCode.NRefactory.Tests/CSharp/CodeCompletion/CodeCompletionBugTests.cs

@@ -5900,5 +5900,30 @@ class MainClass
 				Assert.IsFalse(provider.AutoSelect);
 			});
 		}
+
+		/// <summary>
+		/// Bug 9896 - Wrong dot completion
+		/// </summary>
+		[Test]
+		public void TestBug9896 ()
+		{
+			
+			CombinedProviderTest(
+				@"using System; 
+
+public class Testing 
+{ 
+    public static void DoNothing() {} 
+
+    public static void Main() 
+    { 
+        $DoNothing ().$
+    } 
+}
+
+", provider => {
+				Assert.IsTrue(provider == null || provider.Count == 0);
+			});
+		}
 	}
 }