Hello All,

Please I have a web application
in which I read an Excel spreadsheet into
a DataTable and then bind the DataTable to
a DataGridView.

Below is a summary of what I did:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
if (IsValid)
       {
           UploadID = Guid.NewGuid().ToString();
           string path = string.Format("{0}\\{1}.xls",
ConfigurationManager.AppSettings["ExcelFilePath"], UploadID);

           try
           {

               if (UploadExcel.PostedFile == null)
               {
                   throw new Exception("Please select a File to
upload");
               }
               UploadExcel.PostedFile.SaveAs(path);
               //Create query to be passed to the Excel conversion
method.
               string sql = "Select * from [stockdetails$]";
               //Store data from Excel file in a DataTable
               dtData =
MicrosoftExcelClient.ConvertExcelToDataTable(path, sql);
               //Bind the GridView to the DataTable to display the
data
               GridView1.DataSource = dtData;
               GridView1.DataBind();

               //Save in ViewState
               ViewState["dtData"] = dtData;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

I set AllowPaging to "true"  and anytime I execute the
web application, the first page of data is correctly displayed but
whenever I try to navaigate to the next page, it results in the
runtime error below:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Server Error in '/IConceptDBWebUpdate' Application.
--------------------------------------------------------------------------------

The GridView 'GridView1' fired event PageIndexChanging which wasn't
handled.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: The GridView 'GridView1'
fired event PageIndexChanging which wasn't handled.

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace
below.

Stack Trace:

[HttpException (0x80004005): The GridView 'GridView1' fired event
PageIndexChanging which wasn't handled.]

System.Web.UI.WebControls.GridView.OnPageIndexChanging(GridViewPageEventArgs
e) +1473555
  System.Web.UI.WebControls.GridView.HandlePage(Int32 newPage) +83
  System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean
causesValidation, String validationGroup) +488
  System.Web.UI.WebControls.GridView.RaisePostBackEvent(String
eventArgument) +199

System.Web.UI.WebControls.GridView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +7
  System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +11
  System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
+174
  System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+5102

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.832;
ASP.NET Version:2.0.50727.832

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Any help with how I can achieve paging in this scenario will be
appreciated.

Thank you very much,

Regards,

Chike.