need to convert C# 4.0 code C# 2.0..please help me

The 'var' keyword won't work either as it wasn't introduced until C# 3.0.

However, the closest equivalent of the 'dynamic' keyword is 'object' so I'd try that.

You''ll almost certainly need to make other changes such as casting your dynamic object to its actual type when calling methods or accessing properties of that type but you can only take each problem as it comes when trying to convert to an earlier version. 

 Change your dynamic keyword to var.

 Now open any txt file . and drag and drop your sln file into it.
Now change visual studio version and save it.

 Now copy all important block of web config.
and add new web config , Now paste it.


 try it. I think it would work properly.

regards

ravi