I have already have references to System and System.Data.
1.The type \'System.ComponentModel.IListSource\' is defined in an assembly that is not referenc
You need to add references to assemblies where there type are defines. To add reference to an assembly; right click on the Reference nodes under your project and select the assemblies node on the left tree and
System.dll
, which will show up as System on the right sideSystem.Data.dll
, which will show up as System.Data
on the right side