The follwing is the coding in Editmodule.aspx protected void Page_Load(object sender, EventArgs e) { if (Session["username"] == null) { Response.Redirect("PMSessionExpiry.aspx"); } string strAccess, Filename; strAccess = null; Filename = System.IO.Path.GetFileName(HttpContext.Current.Request.CurrentExecutionFilePath); strAccess = PTSGeneral.File_Found(Session["username"].ToString(), Filename); if (strAccess == "") { Response.Redirect("PMAccess.aspx"); } if (!IsPostBack) { //Fill project name, module name to dropdownlist. PTSGeneral.DDlGetData("select pr_id,pr_name from project_mst order by pr_id", DDLProjectName, "pr_name", "Pr_id"); ProjectId = DDLProjectName.SelectedValue.ToString(); lblModId.Text = CModule.getMaxModuleID(); //PTSGeneral.DDlGetData("select mo_id,mo_name from module_mst where pr_id='" + DDLProjectName.SelectedValue.ToString() + "' order by pr_id,mo_id", lblModId , "mo_id", "mo_name"); PTSGeneral.getUserDetails(ddlModifiedBy); //call script for only accept only numeric value in no.of developer field txtNoofDeveloper.Attributes.Add("onKeypress", "javascript:return inputNumbers()"); } } 2. source contains the following <a href="javascript:OpenPopupPage('HelpMod.aspx','<%= txtModIdSearch.ClientID %>','false');"> <img id="imgHelpMod" onclick="return imgHelpMod_onclick()" src="images/help4.jpg" style="width: 19px" height="19" /></td> 3. helpmodule.aspx has the following No coding. only grid which contains "module id, module name" Kindly give a clear coding how to do and where to write. plz dhans