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

Value cannot be null.
Parameter name: IdCustomer 
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.ArgumentNullException: Value cannot be null.
Parameter name: IdCustomer

Source Error: 


Line 2459:            this.Adapter.SelectCommand = this.CommandCollection[1];
Line 2460:            if ((IdCustomer == null)) {
Line 2461:                throw new System.ArgumentNullException("IdCustomer");
Line 2462:            }
Line 2463:            else {
 

Source File: c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\inkdata\920d08c0\4feb6a56\App_Code.osh284bi.0.cs    Line: 2461 

  protected void ObjectDataSourceForm_Selecting(object sender, ObjectDataSourceSelectingEventArgs e)
    {
        if (GridView1Cust.SelectedIndex != -1)
        {
            e.InputParameters["IdCustomer"] = GridView1Cust.SelectedDataKey["IdCustomer"].ToString();