I am making a C# project in which I am using ScintillaNet, and it says:
The referenced assembly "ScintillaNet" could not be resolved because it has a dependency on "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project.
I tried adding a reference to System.Design, but it doesn't exist in my list. Do I need to download it somewhere? I have Microsoft Visual Studio 10.
Go to the project's properties and select the target framework to be .NET 4.0, not Client Profile
来源：https://stackoverflow.com/questions/3030484/where-did-system-design-go