sender.get_masterTableView() returns null in GridDestroying after .NET 4.0 upgrade

[Attila]

I have a RadGrid (along with a RadAjaxManager). The version is 2010.1.415.35

There is a 'Refresh' button on the page, which eventually calls __doPostBack.
Everything was working fine until I upgraded the website from .NET 3.5 to 4.0.
But now, after the AJAX call sender.get_masterTableView() returns null in the GridDestroying function.

Is there a fix for this version?

Attila
 

<telerik:RadGrid 
            ID="grid"
            CellPadding="1"
            CellSpacing="0"
            EnableEmbeddedSkins="false"
            AlternatingItemStyle-Height="20"
            ItemStyle-Height="20"
            ShowFooter="True"
            AllowSorting="False"            
            runat="server"
            EnableEmbeddedBaseStylesheet="false"
            AutoGenerateColumns="false"
            AllowMultiRowEdit="true"
            GridLines="None"
            Width="100%"            
            ExportSettings-FileName="Summary"
            ExportSettings-Excel-FileExtension="xls"
            ExportSettings-Excel-Format="HTML"
            ExportSettings-OpenInNewWindow="true"
            ExportSettings-ExportOnlyData="true"             
            ExportSettings-IgnorePaging="true">             
            <ClientSettings>
                <Scrolling AllowScroll="True" UseStaticHeaders="true" />
            </ClientSettings>             
            <HeaderContextMenu EnableEmbeddedSkins="False"></HeaderContextMenu>
        <MasterTableView 
                ClientDataKeyNames="ROW_ID"
                DataKeyNames="ROW_ID"
                EditMode="InPlace"
                CommandItemDisplay="Bottom"
                AllowMultiColumnSorting="False"                
               >
            <EditFormSettings>
                <EditColumn InsertImageUrl="Update.gif" UpdateImageUrl="Update.gif" EditImageUrl="Edit.gif"
                    CancelImageUrl="Cancel.gif">
                </EditColumn>
            </EditFormSettings>
                <CommandItemTemplate>
                    <asp:Button ID="btnSave" runat="server" OnClientClick="AddNew();return false;" Text="Add" />  
                </CommandItemTemplate>
            </MasterTableView>
            <ClientSettings>
                <ClientEvents OnRowCreated="RowCreated" OnGridCreated="GridCreated" OnRowClick="RowClick" OnRowContextMenu="showMenu" OnColumnContextMenu="showHeaderMenu" OnCommand="RadGrid1_Command" OnGridDestroying="GridDestroying" />
            </ClientSettings>
        </telerik:RadGrid>

protected override void RaisePostBackEvent( IPostBackEventHandler source, string eventArgument )
{
    base.RaisePostBackEvent( source, eventArgument );
 
    if ( source == this. )
    { 
        if ( eventArgument.IndexOf( "Refresh" ) != -1 )
        {
            grid.Rebind();
        }
    }
}

function GridDestroying(sender, eventArgs) {
    for (var i = 0; i < sender.get_masterTableView().get_dataItems().length; i++) {
        var curRow = sender.get_masterTableView().get_dataItems()[i];
        for (var j = 0; j < curRow.get_element().cells.length; j++) {
            var cell = curRow.get_element().cells[j];
            if (cell) {
                $clearHandlers(cell);
            }
        }
    }
}

[Martin]

Hello Attila,

The problem is that when using AJAX, the mastertableview object is disposed earlier in .NET 4.0 scenarios. I recommend that you try to move this logic to OnTableDestroying event instead.

I hope this helps.

Greetings,
Martin
the Telerik team

[Attila]

Cells are already disposed in OnTableDestroying, so the appropriate event is OnRowDestroying.

Thanks,
Attila