Add basic C# Razor completion for WebViewPage members.

Dot completion now shows members of the WebViewPage class which is the base class of Razor view pages.

src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Completion/RazorCSharpDotCompletionDataProvider.cs

@@ -14,10 +14,53 @@ namespace ICSharpCode.AspNet.Mvc.Completion
 	{
 		public override ResolveResult Resolve(ITextEditor editor, ExpressionResult expressionResult)
 		{
+			NRefactoryResolver resolver = CreateResolver(editor);
 			ParseInformation parseInfo = ParserService.GetParseInformation(editor.FileName);
-			NRefactoryResolver resolver = new NRefactoryResolver(LanguageProperties.CSharp);
-			resolver.LimitMethodExtractionUntilLine = editor.Caret.Line;
-			return resolver.Resolve(expressionResult, parseInfo, editor.Document.Text);
+			ParseInformation parseInfoWithWebViewPageClass = CreateParseInformationWithWebViewPageClass(parseInfo);
+			expressionResult.Region = GetRegionInMiddleOfWebViewPageClass();
+			return resolver.Resolve(expressionResult, parseInfoWithWebViewPageClass, editor.Document.Text);
+		}
+		
+		NRefactoryResolver CreateResolver(ITextEditor editor)
+		{
+			return new NRefactoryResolver(LanguageProperties.CSharp) {
+				LimitMethodExtractionUntilLine = editor.Caret.Line
+			};
+		}
+		
+		ParseInformation CreateParseInformationWithWebViewPageClass(ParseInformation parseInfo)
+		{
+			var compilationUnit = new DefaultCompilationUnit(parseInfo.CompilationUnit.ProjectContent);
+			AddWebViewPageClass(compilationUnit);
+			return new ParseInformation(compilationUnit);
+		}
+		
+		void AddWebViewPageClass(DefaultCompilationUnit compilationUnit)
+		{
+			DefaultClass webViewPageClass = CreateWebViewPageClass(compilationUnit);
+			compilationUnit.Classes.Add(webViewPageClass);
+		}
+		
+		DefaultClass CreateWebViewPageClass(ICompilationUnit compilationUnit)
+		{
+			var webViewPageClass = new DefaultClass(compilationUnit, "RazorWebViewPage") {
+				Region = new DomRegion(1, 0, 3, 0)
+			};
+			AddWebViewPageBaseClass(webViewPageClass);
+			return webViewPageClass;
+		}
+		
+		void AddWebViewPageBaseClass(DefaultClass webViewPageClass)
+		{
+			IClass webViewPageBaseClass = webViewPageClass.ProjectContent.GetClass("System.Web.Mvc.WebViewPage", 0);
+			if (webViewPageBaseClass != null) {
+				webViewPageClass.BaseTypes.Add(webViewPageBaseClass.DefaultReturnType);
+			}
+		}
+		
+		DomRegion GetRegionInMiddleOfWebViewPageClass()
+		{
+			return new DomRegion(2, 0, 2, 0);
 		}
 	}
 }