Grid View for ASP.NET Web Forms - How to display detail grid data in a popup window

This example demonstrates how to create a template in a master grid, add a button to the template, and display a pop-up window with detail grid data on a button click.

Overview

Follow the steps below to display detail grid data in a pop-up window:

1. Specify a column's DataItemTemplate property and add a button to the template.

   <dx:GridViewDataColumn FieldName="DetailButtons" VisibleIndex="3">
       <DataItemTemplate>
           <dx:ASPxButton ID="DetailButton" runat="server" Text="Show details" AutoPostBack="false"
               OnLoad="DetailsButton_Load">
           </dx:ASPxButton>
       </DataItemTemplate>
   </dx:GridViewDataColumn>

2. Handle the button's server-side Load event to access the button's template container and get the master row's key value. Pass this key value as a parameter to the button's client-side Click event.

   protected void DetailsButton_Load(object sender, EventArgs e) {
       ASPxButton btn = sender as ASPxButton;
       GridViewDataItemTemplateContainer container = btn.NamingContainer as GridViewDataItemTemplateContainer;
       string categoryID = DataBinder.Eval(container.DataItem, "CategoryID").ToString();
       btn.ClientSideEvents.Click = String.Format("function (s, e) {{ OnClick(s, e, {0}) }}", categoryID);
   }

3. In the button's Click event handler, send a callback to a popup control and display the pop-up window with detail grid data on the callback.

   function OnClick(s, e, categoryID) {
       Popup.PerformCallback(categoryID);
       Popup.Show();
   }

4. Handle the popup's server-side WindowCallback event to get a detail data source and bind the detail grid to that data source.

   protected void Popup_WindowCallback(object source, PopupWindowCallbackArgs e) {
       CurrentCategoryID = e.Parameter;
       DetailsApply();
   }
   private void DetailsApply() {
       if (!String.IsNullOrEmpty(CurrentCategoryID)) {
           DetailSource.SelectParameters["CategoryID"].DefaultValue = CurrentCategoryID;
           DetailGrid.DataBind();
       }
   }

Files to Review

• Default.aspx (VB: Default.aspx)
• Default.aspx.cs (VB: Default.aspx.vb)

Documentation

• Grid View Templates
• Master-Detail Relationship

More Examples

• Grid View for ASP.NET Web Forms - How to Display a Popup Dialog When a User Clicks a Link in a Grid Row

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