Fix <asp:Content> tags not displaying the colon character when folded.

src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/CharacterReader.cs

@@ -105,5 +105,10 @@ namespace ICSharpCode.AspNet.Mvc.Folding
 		{
 			return CurrentCharacter == '\n';
 		}
+		
+		public bool IsColon()
+		{
+			return CurrentCharacter == ':';
+		}
 	}
 }

src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlReader.cs

@@ -103,7 +103,7 @@ namespace ICSharpCode.AspNet.Mvc.Folding
 		
 		bool IsElementNameCharacter()
 		{
-			return reader.IsLetterOrDigit() || reader.IsSpace();
+			return reader.IsLetterOrDigit() || reader.IsSpace() || reader.IsColon();
 		}
 		
 		void ReadDoubleQuotedString()

src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlReaderTests.cs

@@ -320,5 +320,16 @@ namespace AspNet.Mvc.Tests.Folding
 			
 			Assert.IsFalse(result);
 		}
+		
+		[Test]
+		public void Value_ReadAspContentTagWithAspNamespacePrefix_ReturnsAspContentWithColonCharacter()
+		{
+			CreateHtmlReader("<asp:Content>");
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("asp:Content", value);
+		}
 	}
 }