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[Solved] Problem with ajax request

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Jean asked on 25 May 2010, 04:57 PM

Hi ! I spent all this afternoon on a problem without findind a solution :(

I added an ASP.NET AJAX Q3 2009 Radgrid :

    
            <telerik:RadGrid ID="RadGrid1" runat="server" GridLines="None" AutoGenerateColumns="False" 
        
                                Skin="WebBlue" AllowSorting="True" AllowPaging="True" OnNeedDataSource="RadGrid1_NeedDataSource"  
        
                                OnItemCreated="RadGrid1_ItemCreated" 
        
                                EnableAJAX="True" OnItemCommand="RadGrid1_ItemCommand" OnItemEvent="RadGrid1_ItemEvent"> 
        
                                    <SortingSettings SortedAscToolTip="Tri croissant" SortedDescToolTip="Tri d&#233;croissant" 
        
                                        SortToolTip="Trier" /> 
        
                                    <MasterTableView> 
        
                                        <RowIndicatorColumn Visible="False"> 
        
                                            <HeaderStyle Width="20px" /> 
        
                                        </RowIndicatorColumn> 
        
                                        <ExpandCollapseColumn Resizable="False" Visible="False"> 
        
                                            <HeaderStyle Width="20px" /> 
        
                                        </ExpandCollapseColumn> 
        
                                        <Columns> 
        
                                            <telerik:GridBoundColumn DataField="Cli" meta:resourcekey="CliColumnResource" UniqueName="Cli"> 
        
                                            </telerik:GridBoundColumn> 
        
                                            <telerik:GridBoundColumn DataField="ACId" meta:resourcekey="ACIdColumnResource" UniqueName="ACId"> 
        
                                            </telerik:GridBoundColumn> 
        
                                            <telerik:GridBoundColumn DataField="ArchiveId" meta:resourcekey="ArchiveIdColumnResource" UniqueName="ArchiveId"> 
        
                                            </telerik:GridBoundColumn> 
        
                                        </Columns> 
        
                                   </MasterTableView> 
        
                                   <ClientSettings> 
        
                                          <Selecting AllowRowSelect="True" /> 
        
                                     </ClientSettings> 
        
                                    <SelectedItemStyle BackColor="Blue" ForeColor="White" /> 
        
                        </telerik:RadGrid>

In code behind I added that :

    
            RadGrid1.MasterTableView.ClientDataKeyNames = new string[] { "ArchiveId", "ACId" }; 
        
                        this.RadGrid1.ClientSettings.ClientEvents.OnRowSelected = "RowSelected";

in order to do something on row selected...

Here is the definition of RowSelected funtion :

    
            <script type="text/javascript"> 
        
                function RowSelected(sender, eventArgs) { 
        
                    var archiveId = eventArgs.getDataKeyValue("ArchiveId"); 
        
                    var archiveClassId = eventArgs.getDataKeyValue("ACId"); 
        
                    window["RadGrid1.ClientID"].AjaxRequest("RadGrid1.UniqueID", "RadGrid1_RowSelected"); 
        
                } 
        
            </script>

And in code behind :

    
            protected override void RaisePostBackEvent(IPostBackEventHandler sourceControl, string eventArgument) 
        
                    { 
        
                        base.RaisePostBackEvent(sourceControl, eventArgument); 
        
                        if (eventArgument == null) 
        
                            return; 
        
                        if (eventArgument.Trim() == "") 
        
                            return; 
        
                        string[] parts = eventArgument.Split(':'); 
        
                        switch (parts[0]) 
        
                        { 
        
                            case "RadGrid1_RowSelected": 
        
                                string[] subparts = parts[2].Split('¤'); 
        
                                TbxArchiveId.Text = subparts[1]; 
        
                                TbxCAId.Text = subparts[0]; 
        
                                break; 
        
                        } 
        
                    }

When I debug with IE, it tells me that "window[...]" is null.

How can it be ?? :(

Can you help me please ?

1 Answer, 1 is accepted

answered on 28 May 2010, 01:00 PM

Hello Jean,

To get the RadGrid on client side you need to use the $find() operator. Please check out the following online documentation article which explains how to get RadGrid client object:
http://www.telerik.com/help/aspnet-ajax/grdgettingradgridclientobject.html
Also to perform an ajax request from client side you need to get the RadAjaxManager and call its ajaxRequest() method. I believe that the following RadAjaxManager's HowTo section will be of help.

Sincerely yours,
Radoslav
the Telerik team

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