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Version Q1 2012 released 04/11/2012
select

Ajax / Partial Ajaxification


Products:
Add to cartProductNameQuantityPerUnitUnitPriceUnitsInStock
 
123456
Page size:
select
 30 items in 6 pages
Chai10 boxes x 20 bags$18.0039
Chang24 - 12 oz bottles$19.0017
Aniseed Syrup12 - 550 ml bottles$10.0013
Chef Anton's Cajun Seasoning48 - 6 oz jars$22.0053
Grandma's Boysenberry Spread12 - 8 oz jars$25.00120


Shopping cart:


  • The example demonstrates the ability of RadAjaxManager to ajaxify specific controls dynamically. Here, the ImageButtons are ajaxified intercepting the ItemCreated event hander of the grid.
    Here is a code snippet showing how this is achieved:

            protected void RadGrid1_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e) 
            { 
                if (e.Item is GridDataItem) 
                { 
                    GridDataItem dataItem = e.Item as GridDataItem; 
                    ImageButton ibtnAddToCart = (ImageButton)(dataItem["TemplateColumn1"]).FindControl("ibtnAddToCart"); 
                    RadAjaxManager1.AjaxSettings.AddAjaxSetting(ibtnAddToCart, RadGrid2); //ajaxify the button 
                } 
            } 

    When one of the image button is clicked, the corresponding item is added to the Shopping cart (RadGrid2).

    Both grids are ajaxafied with declaratively applied settings in the mark-up code. For further information please refer to the Default.aspx section.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.Web.Examples.Ajax.PartialAjaxification.DefaultCS" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="sds" Namespace="Telerik.Web.SessionDS" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/tr/xhtml11/dtd/xhtml11.dtd">
    <html xml:lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag ID="Headtag1" runat="server" />
    </head>
    <body class="BODY">
        <form id="Form1" method="post" runat="server">
        <qsf:Header ID="Header1" runat="server" NavigationLanguage="c#" XhtmlCompliant="true"
            ShowSkinChooser="true" />
        <telerik:RadScriptManager ID="RadScriptManager1" runat="server" />
        <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1">
            <AjaxSettings>
                <telerik:AjaxSetting AjaxControlID="RadGrid1">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
                <telerik:AjaxSetting AjaxControlID="EmptyShoppingCart">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1" />
                        <telerik:AjaxUpdatedControl ControlID="RadGrid2" LoadingPanelID="RadAjaxLoadingPanel1" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
            </AjaxSettings>
        </telerik:RadAjaxManager>
        <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
        </telerik:RadAjaxLoadingPanel>
        <telerik:RadFormDecorator ID="FormDecorator1" runat="server" DecoratedControls="Buttons">
        </telerik:RadFormDecorator>
        <%--RadGrid1--%>
        <br />
        <h5>Products:</h5>
        <hr />
        <telerik:RadGrid ID="RadGrid1" runat="server" AllowFilteringByColumn="True" AllowPaging="True"
            AllowSorting="True" GridLines="None" OnItemCreated="RadGrid1_ItemCreated" OnItemCommand="RadGrid1_ItemCommand"
            OnNeedDataSource="RadGrid1_NeedDataSource" PageSize="5">
            <MasterTableView AutoGenerateColumns="False" DataKeyNames="ProductID">
                <Columns>
                    <telerik:GridTemplateColumn UniqueName="TemplateColumn1" HeaderText="Add to cart"
                        AllowFiltering="false">
                        <ItemStyle HorizontalAlign="Center" />
                        <ItemTemplate>
    <asp:ImageButton ID="ibtnAddToCart" runat="server" ImageUrl="~/Ajax/Img/addtocart.gif"
    AlternateText="Add to cart" CommandName="AddToCart"/>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                    <telerik:GridBoundColumn DataField="ProductName" HeaderText="ProductName" SortExpression="ProductName"
                        UniqueName="ProductName">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="QuantityPerUnit" HeaderText="QuantityPerUnit"
                        SortExpression="QuantityPerUnit" UniqueName="QuantityPerUnit">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="UnitPrice" DataType="System.Decimal" HeaderText="UnitPrice"
                        SortExpression="UnitPrice" UniqueName="UnitPrice" DataFormatString="{0:C}">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="Units" DataType="System.Int32" HeaderText="UnitsInStock"
                        SortExpression="Units" UniqueName="Units" FooterAggregateFormatString="{0:C}">
                    </telerik:GridBoundColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>
        <br />
        <br />
        <h5>Shopping cart:</h5>
        <hr />
        <%--RadGrid2--%>
        <%--OnItemCreated="RadGrid2_ItemCreated" OnItemCommand="RadGrid2_ItemCommand"--%>
        <telerik:RadGrid ID="RadGrid2" runat="server" AllowFilteringByColumn="True" AllowPaging="True"
            ShowFooter="true" AllowSorting="True" GridLines="None" OnNeedDataSource="RadGrid2_NeedDataSource"
            PageSize="5">
            <MasterTableView AutoGenerateColumns="False" DataKeyNames="ProductID">
                <NoRecordsTemplate>
                    No products added to the shopping cart.
                </NoRecordsTemplate>
                <Columns>
                    <telerik:GridBoundColumn DataField="ProductName" HeaderText="ProductName" SortExpression="ProductName"
                        UniqueName="ProductName">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="QuantityPerUnit" HeaderText="QuantityPerUnit"
                        SortExpression="QuantityPerUnit" UniqueName="QuantityPerUnit">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="UnitPrice" DataType="System.Decimal" HeaderText="UnitPrice"
                        SortExpression="UnitPrice" UniqueName="UnitPrice" DataFormatString="{0:C}">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="Units" DataType="System.Int32" HeaderText="UnitsInCart"
                        SortExpression="Units" UniqueName="Units">
                    </telerik:GridBoundColumn>
                    <telerik:GridCalculatedColumn HeaderText="Total Price" UniqueName="TotalPrice" DataType="System.Double"
                      DataFields="UnitPrice, Units" Expression="{0}*{1}" Aggregate="Sum" DataFormatString="{0:C}"
                      FooterAggregateFormatString="Total : {0:C}">
                    </telerik:GridCalculatedColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>
        <div style="padding-top:5px; float:right">
    <asp:Button ID="EmptyShoppingCart" runat="server" Text="Empty Shopping cart"
    onclick="EmptyShoppingCart_Click" />
        </div>
        <br />
        <qsf:Footer runat="server" ID="Footer1" />
        </form>
    </body>
    </html>

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