I try to use DataGridTableStyle, but I get the compile error message:

CS0246: The type or namespace name 'DataGridTableStyle' could not be found (are you missing a using directive or an assembly reference?)

I try to check through Microsoft MSDN site, it mentions that the require namespace is System.Windows.Forms, so I have included it at the delaration directive such as this:

<%@ Import Namespace = "System.Windows.Forms" %>

and it does not work.

Later, I try again this:

<%@ Import Namespace = "System.Windows.Forms.DataGridTableStyle" %>

but, still there is the compilation error.

Can anyone help me on this?