ICscHostObject.IsDesignTime Method ()
Returns a value indicating whether the integrated development environment (IDE) is currently in design time mode.
MSBuild is now included in Visual Studio instead of the .NET Framework. You can use MSBuild 12.0 side-by-side with versions previously deployed with the .NET Framework.For more information, see What's New in MSBuild 12.0.
Assembly: Microsoft.Build.Tasks.Core (in Microsoft.Build.Tasks.Core.dll)