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Version Q1 2012 released 04/11/2012
select

Grid / Edit on Double-click

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7Uncle Bob's Organic Dried Pears12 - 1 lb pkgs.$30.0015
10Ikura12 - 200 ml jars$31.0031
12Queso Manchego La Pastora10 - 500 g pkgs.$38.0086
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  • You may want to allow the user to force grid item in edit mode by simply double-clicking the respective item (an easy and intuitive approach). This demo illustrates how to switch a row in edit mode by double-clicking an arbitrary grid item and how to update this row when the user clicks another row in the grid. Furthermore, a user-friendly confirm dialog will be displayed to prompt whether the operation should be propagated or not.

    The example uses RadAjaxManager instance to ajaxify the grid and perform RadAjaxManagerClientObject.ajaxRequest() calls. These calls are invoked through the RowClick and RowDblClick events) and the onchange event of the inputs in the grid rows used for editing (the handler for the onchange event is assigned in the GridCreated handler of the grid).

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="vb" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.AJAX.EditOnDblClick.DefaultVB" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="telerik" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="telerik" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="telerik" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/tr/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <telerik:HeadTag runat="server" ID="Headtag2"></telerik:HeadTag>
    </head>
    <body class="BODY">
        <form runat="server" id="mainForm" method="post">
            <telerik:Header runat="server" ID="Header1" NavigationLanguage="VB" ShowDbResetTimer="true"></telerik:Header>
            <!-- content start -->
            <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
            <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
            <script type="text/javascript">
            <!--
             var hasChanges, inputs, dropdowns, editedRow;
                
             function RowClick(sender, eventArgs)
             {
                 if(editedRow && hasChanges)
                 {
                 hasChanges = false;
                     if(confirm("Update changes?"))
                     {
                        
                         $find("<%= RadGrid1.ClientID %>").get_masterTableView().updateItem(editedRow);
                     }
                 }
             }

             function RowDblClick(sender, eventArgs)
             {
                 editedRow = eventArgs.get_itemIndexHierarchical();
                 $find("<%= RadGrid1.ClientID %>").get_masterTableView().editItem(editedRow);
             }

                function GridCommand(sender, args)
             {
             if (args.get_commandName() != "Edit")
             {
             editedRow = null;
             }
             }

             function GridCreated(sender, eventArgs)
             {
             var gridElement = sender.get_element();
             var elementsToUse = [];
                 inputs = gridElement.getElementsByTagName("input");
                 for (var i = 0; i < inputs.length;i++)
                 {
                 var lowerType = inputs[i].type.toLowerCase();
                 if(lowerType == "hidden" || lowerType == "button")
                 {
                            continue;
                 }
                    
                 Array.add(elementsToUse, inputs[i]);
                     inputs[i].onchange = TrackChanges;
                 }
                    
                 dropdowns = gridElement.getElementsByTagName("select");
                 for (var i = 0; i < dropdowns.length;i++)
                 {
                     dropdowns[i].onchange = TrackChanges;
                 }

                 setTimeout(function(){if(elementsToUse[0])elementsToUse[0].focus();},100);
             }

             function TrackChanges(e)
             {
                 hasChanges = true;
             }
         -->    
        </script>
        </telerik:RadCodeBlock>
            <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
                <AjaxSettings>
                    <telerik:AjaxSetting AjaxControlID="RadGrid1">
                        <UpdatedControls>
                            <telerik:AjaxUpdatedControl ControlID="RadGrid1" />
                            <telerik:AjaxUpdatedControl ControlID="Label1" />
                        </UpdatedControls>
                    </telerik:AjaxSetting>
                </AjaxSettings>
            </telerik:RadAjaxManager>
            <telerik:RadGrid ID="RadGrid1" DataSourceID="SqlDataSource1" Width="97%"
                ShowStatusBar="True" AllowSorting="True" PageSize="7" GridLines="None" AllowPaging="True"
                runat="server" AllowAutomaticUpdates="True" AutoGenerateColumns="False">
                <MasterTableView TableLayout="Fixed" DataKeyNames="ProductID" EditMode="InPlace">
                  <Columns>
                    <telerik:GridBoundColumn UniqueName="ProductID" DataField="ProductID" HeaderText="ProductID" ReadOnly="True" HeaderStyle-Width="10%" />
                    <telerik:GridBoundColumn UniqueName="ProductName" DataField="ProductName" HeaderText="Product name"
                     HeaderStyle-Width="25%" ColumnEditorID="GridTextBoxColumnEditor1" />
                    <telerik:GridBoundColumn UniqueName="QuantityPerUnit" DataField="QuantityPerUnit" HeaderText="Quantity"
                     HeaderStyle-Width="20%" />
                    <telerik:GridNumericColumn UniqueName="UnitPrice" DataField="UnitPrice" HeaderText="UnitPrice"
                     DataFormatString="{0:C}" HeaderStyle-Width="10%" />
                    <telerik:GridDropDownColumn UniqueName="UnitsInStock" HeaderText="In stock" ColumnEditorID="GridDropDownListColumnEditor1"
                     ListTextField="UnitsInStock" ListValueField="UnitsInStock" DataSourceID="SqlDataSource1" DataField="UnitsInStock" HeaderStyle-Width="10%" />
                    <telerik:GridCheckBoxColumn UniqueName="Discontinued" DataField="Discontinued" HeaderText="Discontinued"
                     HeaderStyle-Width="10%" ColumnEditorID="GridCheckBoxColumnEditor1" />
                  </Columns>
                </MasterTableView>
                <ClientSettings>
                    <ClientEvents OnRowClick="RowClick" OnRowDblClick="RowDblClick"
                        OnGridCreated="GridCreated" OnCommand="GridCommand" />
                </ClientSettings>
            </telerik:RadGrid>
            <telerik:GridTextBoxColumnEditor ID="GridTextBoxColumnEditor1" runat="server" TextBoxStyle-Width="180px" />
            <telerik:GridDropDownListColumnEditor ID="GridDropDownListColumnEditor1" runat="server" DropDownStyle-Width="70px" />
            <telerik:GridCheckBoxColumnEditor ID="GridCheckBoxColumnEditor1" runat="server" CheckBoxStyle-BorderWidth="2" />
            <br />
            <asp:Label ID="Label1" runat="server" EnableViewState="false" />
            <br />
    <asp:SqlDataSource ID="SqlDataSource1" runat="server"
    ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString35 %>"
                SelectCommand="SELECT * FROM [Products]"
                UpdateCommand="UPDATE [Products] SET [ProductName] = @ProductName, [QuantityPerUnit] = @QuantityPerUnit, [UnitPrice] = @UnitPrice, [UnitsInStock] = @UnitsInStock, [Discontinued] = @Discontinued WHERE [ProductID] = @ProductID">
                <UpdateParameters>
                    <asp:Parameter Name="ProductName" Type="String" />
                    <asp:Parameter Name="QuantityPerUnit" Type="String" />
                    <asp:Parameter Name="UnitPrice" Type="Decimal" />
                    <asp:Parameter Name="UnitsInStock" Type="Int16" />
                    <asp:Parameter Name="Discontinued" Type="Boolean" />
                    <asp:Parameter Name="ProductID" Type="Int32" />
                </UpdateParameters>
            </asp:SqlDataSource>
            <!-- content end -->
            <telerik:Footer runat="server" ID="Footer1"></telerik:Footer>
        </form>
    </body>
    </html>

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