Page doesn't contain a definition for X

During development I had a `TempTextBlock` for testing and I've removed it now. It builds successfully, but when I try to create a package for store, it gives this error: error CS1061: 'MainPage' does not contain a definition for 'TempTextBlock' and no extension method 'TempTextBlock' accepting a first argument of type 'MainPage' could be found (are you missing a using directive or an assembly reference?) In `MainPage.g.cs` I see this: ``` /// <summary> /// Connect() /// </summary> [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.Windows.UI.Xaml.Build.Tasks"," 14.0.0.0")] [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] public void Connect(int connectionId, object target) { switch(connectionId) { case 1: { this.TempTextBlock = (global::Windows.UI.Xaml.Controls.TextBlock)(target); } break; default: break; } this._contentLoaded = true; } ``` So `TempTextBlock` is used there. If I remove the whole method, it gives this error: error CS0535: 'MainPage' does not implement interface member 'IComponentConnector.Connect(int, object)' What's that `Connect` method in `MainPage.g.cs` and how to resolve this issue? thanks.