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The command item feature of Telerik RadGrid is useful when you want to trigger commands directly from buttons/controls residing above the column headers. The visibility of the command item can be customized using the GridTableView.CommandItemDisplay property.
In the first grid from the demo the command item template is used to perform a selection-based editing functionality. When you select several items from the grid you can edit, update or delete them at once. The command buttons also allow you to add new record or refresh the data in the grid.
By default the command item displays Add new record and Refresh link buttons with images.
The RadGrid.ItemCommand event will be fired when a custom command bubbles from the CommandItem, which lets you define custom functionality that can be executed in the ItemCommand handler. Additional major benefit is that all buttons (residing in the CommandItem) will automatically take advantage of the RadGrid AJAX mechanism, without writing any extra code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits="Grid.Examples.Programming.CommandItem.DefaultCS" %> <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %> <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %> <!DOCTYPE html> <html xmlns='http://www.w3.org/1999/xhtml'> <head runat="server"> <title>Telerik ASP.NET Example</title> <link href="styles.css" rel="stylesheet" type="text/css" /> <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server"> <script type="text/javascript"> function RowDblClick(sender, eventArgs) { sender.get_masterTableView().editItem(eventArgs.get_itemIndexHierarchical()); } </script> </telerik:RadCodeBlock> </head> <body> <form id="form1" runat="server"> <telerik:RadScriptManager runat="server" ID="RadScriptManager1" /> <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" /> <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"> <AjaxSettings> <telerik:AjaxSetting AjaxControlID="RadGrid1"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadGrid1"></telerik:AjaxUpdatedControl> <telerik:AjaxUpdatedControl ControlID="Label1"></telerik:AjaxUpdatedControl> <telerik:AjaxUpdatedControl ControlID="Label2"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> <telerik:AjaxSetting AjaxControlID="ConfiguratorPanel1"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadGrid2"></telerik:AjaxUpdatedControl> <telerik:AjaxUpdatedControl ControlID="ConfiguratorPanel1"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> <telerik:AjaxSetting AjaxControlID="RadGrid2"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadGrid2"></telerik:AjaxUpdatedControl> <telerik:AjaxUpdatedControl ControlID="Label3"></telerik:AjaxUpdatedControl> <telerik:AjaxUpdatedControl ControlID="Label4"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> </AjaxSettings> </telerik:RadAjaxManager> <telerik:RadFormDecorator RenderMode="Lightweight" ID="RadFormDecorator1" runat="server" DecorationZoneID="demo" DecoratedControls="All" EnableRoundedCorners="false" /> <div id="demo" class="demo-container no-bg"> <div> <asp:Label ID="Label1" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#FF8080"></asp:Label> <asp:Label ID="Label2" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#00C000"></asp:Label> </div> <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" AllowAutomaticUpdates="true" AllowAutomaticDeletes="true" DataSourceID="SqlDataSource1" AllowSorting="True" AllowPaging="True" runat="server" AllowMultiRowSelection="True" PageSize="7" AllowMultiRowEdit="True" AllowAutomaticInserts="True" OnItemCreated="RadGrid_ItemCreated" OnItemDeleted="RadGrid_ItemDeleted" OnItemUpdated="RadGrid_ItemUpdated" OnItemInserted="RadGrid_ItemInserted"> <PagerStyle Mode="NextPrevAndNumeric"></PagerStyle> <MasterTableView Width="100%" CommandItemDisplay="Top" DataSourceID="SqlDataSource1" DataKeyNames="CustomerID"> <CommandItemTemplate> <div style="padding: 5px 5px;"> Custom command item template <asp:LinkButton ID="btnEditSelected" runat="server" CommandName="EditSelected" Visible='<%# RadGrid1.EditIndexes.Count == 0 %>'><img style="border:0px;vertical-align:middle;" alt="" src="Images/Edit.png"/>Edit selected</asp:LinkButton> <asp:LinkButton ID="btnUpdateEdited" runat="server" CommandName="UpdateEdited" Visible='<%# RadGrid1.EditIndexes.Count > 0 %>'><img style="border:0px;vertical-align:middle;" alt="" src="Images/Update.png"/>Update</asp:LinkButton> <asp:LinkButton ID="btnCancel" runat="server" CommandName="CancelAll" Visible='<%# RadGrid1.EditIndexes.Count > 0 || RadGrid1.MasterTableView.IsItemInserted %>'><img style="border:0px;vertical-align:middle;" alt="" src="Images/Cancel.png"/>Cancel editing</asp:LinkButton> <asp:LinkButton ID="LinkButton2" runat="server" CommandName="InitInsert" Visible='<%# !RadGrid1.MasterTableView.IsItemInserted %>'><img style="border:0px;vertical-align:middle;" alt="" src="Images/AddRecord.png"/>Add new</asp:LinkButton> <asp:LinkButton ID="LinkButton3" runat="server" CommandName="PerformInsert" Visible='<%# RadGrid1.MasterTableView.IsItemInserted %>'><img style="border:0px;vertical-align:middle;" alt="" src="Images/Insert.gif"/> Add this Customer</asp:LinkButton> <asp:LinkButton ID="LinkButton1" OnClientClick="javascript:return confirm('Delete all selected customers?')" runat="server" CommandName="DeleteSelected"><img style="border:0px;vertical-align:middle;" alt="" src="Images/Delete.png"/>Delete selected customers</asp:LinkButton> <asp:LinkButton ID="LinkButton4" runat="server" CommandName="RebindGrid"><img style="border:0px;vertical-align:middle;" alt="" src="Images/Refresh.png"/>Refresh customer list</asp:LinkButton> </div> </CommandItemTemplate> </MasterTableView> <ClientSettings> <Selecting AllowRowSelect="True" EnableDragToSelectRows="True"></Selecting> </ClientSettings> </telerik:RadGrid> <br /> <div> <asp:Label ID="Label3" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#FF8080"></asp:Label> <asp:Label ID="Label4" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#00C000"></asp:Label> </div> <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid2" DataSourceID="SqlDataSource2" AllowSorting="True" AllowAutomaticInserts="true" AllowAutomaticUpdates="true" AllowAutomaticDeletes="true" PageSize="7" AllowPaging="True" runat="server" OnItemCreated="RadGrid_ItemCreated" OnItemDeleted="RadGrid_ItemDeleted" OnItemUpdated="RadGrid_ItemUpdated" OnItemInserted="RadGrid_ItemInserted"> <PagerStyle Mode="NextPrevAndNumeric"></PagerStyle> <MasterTableView Width="100%" CommandItemDisplay="TopAndBottom" DataSourceID="SqlDataSource2" DataKeyNames="CustomerID" AutoGenerateColumns="false" InsertItemDisplay="Top" InsertItemPageIndexAction="ShowItemOnFirstPage"> <Columns> <telerik:GridEditCommandColumn> </telerik:GridEditCommandColumn> <telerik:GridBoundColumn DataField="CustomerID" UniqueName="CustomerID" HeaderText="Customer ID" MaxLength="5"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="CompanyName" UniqueName="CompanyName" HeaderText="Company Name"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ContactName" UniqueName="ContactName" HeaderText="Contact Name"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ContactTitle" UniqueName="ContactTitle" HeaderText="Contact Title"> </telerik:GridBoundColumn> <telerik:GridButtonColumn CommandName="Delete" Text="Delete" UniqueName="DeleteColumn"> </telerik:GridButtonColumn> </Columns> </MasterTableView> <ClientSettings> <ClientEvents OnRowDblClick="RowDblClick"></ClientEvents> </ClientSettings> </telerik:RadGrid> </div> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString35 %>" DeleteCommand="DELETE FROM [Customers] WHERE [CustomerID] = @CustomerID" InsertCommand="INSERT INTO [Customers] ([CustomerID], [CompanyName], [ContactName], [ContactTitle]) VALUES (@CustomerID, @CompanyName, @ContactName, @ContactTitle)" SelectCommand="SELECT [CustomerID], [CompanyName], [ContactName], [ContactTitle] FROM [Customers]" UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [ContactName] = @ContactName, [ContactTitle] = @ContactTitle WHERE [CustomerID] = @CustomerID"> <DeleteParameters> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> </DeleteParameters> <InsertParameters> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> <asp:Parameter Name="CompanyName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactTitle" Type="String"></asp:Parameter> </InsertParameters> <UpdateParameters> <asp:Parameter Name="CompanyName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactTitle" Type="String"></asp:Parameter> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> </UpdateParameters> </asp:SqlDataSource> <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString35 %>" DeleteCommand="DELETE FROM [Customers] WHERE [CustomerID] = @CustomerID" InsertCommand="INSERT INTO [Customers] ([CustomerID], [CompanyName], [ContactName], [ContactTitle]) VALUES (@CustomerID, @CompanyName, @ContactName, @ContactTitle)" SelectCommand="SELECT [CustomerID], [CompanyName], [ContactName], [ContactTitle] FROM [Customers]" UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [ContactName] = @ContactName, [ContactTitle] = @ContactTitle WHERE [CustomerID] = @CustomerID"> <DeleteParameters> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> </DeleteParameters> <InsertParameters> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> <asp:Parameter Name="CompanyName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactTitle" Type="String"></asp:Parameter> </InsertParameters> <UpdateParameters> <asp:Parameter Name="CompanyName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactName" Type="String"></asp:Parameter> <asp:Parameter Name="ContactTitle" Type="String"></asp:Parameter> <asp:Parameter Name="CustomerID" Type="String"></asp:Parameter> </UpdateParameters> </asp:SqlDataSource> <qsf:ConfiguratorPanel ID="ConfiguratorPanel1" runat="server"> <Views> <qsf:View> <qsf:ConfiguratorColumn runat="server" Title="Show insert form" Size="Narrow"> <qsf:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="RadioButtonList1_SelectedIndexChanged"> <asp:ListItem Text="On first page" Value="0" Selected="True"></asp:ListItem> <asp:ListItem Text="On current page" Value="1"></asp:ListItem> <asp:ListItem Text="On last page" Value="2"></asp:ListItem> </qsf:RadioButtonList> </qsf:ConfiguratorColumn> <qsf:ConfiguratorColumn runat="server" Title="Insert form positioning" Size="Narrow"> <qsf:RadioButtonList ID="RadioButtonList2" runat="server" AutoPostBack="true" OnSelectedIndexChanged="RadioButtonList2_SelectedIndexChanged"> <asp:ListItem Text="Top" Value="0" Selected="True"></asp:ListItem> <asp:ListItem Text="Bottom" Value="1"></asp:ListItem> </qsf:RadioButtonList> </qsf:ConfiguratorColumn> </qsf:View> </Views> </qsf:ConfiguratorPanel> </form> </body> </html>