tanks But I put (copy) this file in this folder : Microsoft.ReportViewer.WinForms.dll ,But again, this error shows. please help because I need to install the program with the right tools like Crystal Report ...:confused:

Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load file or assembly 'Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. Source Error: Line 1: <%@ page title="" language="VB" masterpagefile="~/MasterPageSabteNam.master" autoeventwireup="false" inherits="printChap, App_Web_printchap.aspx.cdcab7d2" %> Line 2: Line 3: <%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" Line 4: Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %> Line 5: