Open pop up on griddview button click

use modal popup
    OkControlID="btnOkay" TargetControlID="btnAddNew" PopupControlID="pnlentry" Drag="true"
  PopupDragHandleControlID="PopupHeader" BackgroundCssClass="Background">
 


and panel for enter data


 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

*  Name
	/>

inside gridview

item template

    HeaderStyle-CssClass="AlignCenter">
 
    CausesValidation="false" />
 
 

in code behind row OnRowCommand

  protected void grdSearch_OnRowCommand(object sender, GridViewCommandEventArgs e)
  {

 if (e.CommandName.Equals("Edit1"))
  {
  Control ctrl = e.CommandSource as Control;
  GridViewRow CurrentRow = ctrl.NamingContainer as GridViewRow;
  string strID = grdSearch.DataKeys[CurrentRow.RowIndex].Value.ToString();
  lblPK.Text = strID;
  //query to select from table where id=strID
// fetch data in datareader or dataset
  try
  {
  txtName.Text = dr[0]["class_Name"].ToString();

  lblMode.Text = "M";
  btnSave.Text = "Update";
  }
  catch (Exception ex)
  {
 
  }
  }
}