I have one Component class called "Context". I can see designer of this.

I am deriving "Entity" from Context. I can see designer of Entity.

I am deriving "PersistentEntity" from Entity. I cannot see designer for "PersistentEntity". I am getting the error message as shown in attached JPG file.

I have already source code in .NET 1.1. I migrated that to .NET 3.5 using migration wizard. When you open the .NET 1.1 code in VS 2008. We need to follow few steps. After that, when you build the code. The code is build without any error messages. But the problem is I am unable to see the designer.

When you directly create Components in VS 2003 we get
xx.cs
xx.resx

but with Vs 2008,
xx.cs
xx.Designer.cs

since during migration I dont have xx.Designer.cs in VS 2008, is that problem. I did R&D from that point of view. But it is of no use.