Server Error in '/' Application.

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

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

Source Error:

Line 11: using System.Xml;
Line 12: 
Line 13: using StampaPdf;
Line 14: 
Line 15: public partial class _Default : System.Web.UI.Page 

Source File: e:\Service\elearningoracle2a\Default.aspx.cs    Line: 13

Version Information: Microsoft .NET Framework Version:2.0.50727.1873; ASP.NET Version:2.0.50727.1433