RadGrid1_ItemCreated prevent RadGrid to expand row details

[Sam]

Hello,

I developed my project in Visual Studio 2013 and my project have a RadGrid with DetailTables inside to able to expand row details. Then I follow demo sample

http://demos.telerik.com/aspnet-ajax/controls/examples/integration/gridandwindow/defaultcs.aspx?product=window

to add a RadWindow for Edit and Add New Record.

All working fine until I added a RadGrid1_ItemCreated code behind to create dynamic URL for Edit link button

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridDataItem)
            {
                HyperLink editLink = (HyperLink)e.Item.FindControl("EditLink");
                editLink.Attributes["href"] = "javascript:void(0);";
                editLink.Attributes["onclick"] = String.Format("return ShowEditForm('{0}','{1}','{2}','{3}');",
                    e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["EmpID"],
                    e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["RowID"],
                    e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["VoucherID"],
                    e.Item.ItemIndex);
            }
        }

I could not expand row details anymore.  I get an error in Chrome browser console:

Uncaught Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object. Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6
Error.create Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6
Sys.WebForms.PageRequestManager._createPageRequestManagerServerError Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:15
Sys.WebForms.PageRequestManager._parseDelta Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:15
Sys.WebForms.PageRequestManager._onFormSubmitCompleted Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:15
(anonymous function) Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6
(anonymous function) Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6
Sys.Net.WebRequest.completed Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6
_onReadyStateChange Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSys…:6

As soon as I took OnItemCreated="RadGrid1_ItemCreated", the expand row works again

Can anyone please look at it?  I don't know if this issue cause by Visual Studio 2013

Thanks,
Sam

[Princy]

Hi Sam,

Please use the property Name for the Parent and Child Grid so as to Identify the Tables separately.Please try the following code snippet:

ASPX:

<MasterTableView  Name="Parent" . . . >
 <telerik:GridTableView Name="Child". . .>

C#:

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
 {
    if (e.Item is GridDataItem)
    {
        if (e.Item.OwnerTableView.Name == "Parent")
        {
          HyperLink editLink1 = (HyperLink)e.Item.FindControl("EditLink1");
            //Your Code
        }
        else if (e.Item.OwnerTableView.Name == "Child")
        {
           HyperLink editLink2 = (HyperLink)e.Item.FindControl("EditLink2");
           //Your code
        }
    }
 }

Thanks,
Princy

[Sam]

Hello,

I added property Name for the Parent and Child for the Grid

<telerik:RadGrid ID="RadGrid1" EnableEmbeddedSkins="true" runat="server" AllowPaging="True"
                    AutoGenerateDeleteColumn="False" AutoGenerateEditColumn="False" CellSpacing="0" GridLines="Both"
                    AutoGenerateColumns="false" OnNeedDataSource="RadGrid1_NeedDataSource"
                    OnPreRender="RadGrid1_PreRender" OnDetailTableDataBind="RadGrid1_DetailTableDataBind" OnItemCreated="RadGrid1_ItemCreated">

                    <MasterTableView Name="Parent" DataKeyNames="EmpID,VoucherID,RowID">
                        <DetailTables>
                            <telerik:GridTableView Name="Child" AutoGenerateColumns="false" DataKeyNames="EmpID,RowID,VoucherID" HierarchyLoadMode="ServerOnDemand">
                                <ColumnGroups>
                                    <telerik:GridColumnGroup HeaderText="Time" Name="Time" HeaderStyle-HorizontalAlign="Center">
                                    </telerik:GridColumnGroup>
                                    <telerik:GridColumnGroup HeaderText="Odometer" Name="Odometer" HeaderStyle-HorizontalAlign="Center">
                                    </telerik:GridColumnGroup>
                                </ColumnGroups>
                                <Columns>
                                    <telerik:GridBoundColumn DataField="TimeDeparted" HeaderText="Departed" ColumnGroupName="Time"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="TimeArrived" HeaderText="Arrived" ColumnGroupName="Time"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="OdometerBegin" HeaderText="Begin" ColumnGroupName="Odometer"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="OdometerEnd" HeaderText="End" ColumnGroupName="Odometer"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="DOTMiles" HeaderText="DOT Miles"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="MileageAdjustment" HeaderText="Mileage<br />Adjustment"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Tolls" HeaderText="Tolls"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Others" HeaderText="Others"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Fund" HeaderText="Fund"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="CostCenter" HeaderText="Cost Center"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Account" HeaderText="Account"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Project" HeaderText="Project"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="Task" HeaderText="Task"></telerik:GridBoundColumn>
                                    <telerik:GridBoundColumn DataField="ExpOrg" HeaderText="Exp Org"></telerik:GridBoundColumn>
                                </Columns>
                            </telerik:GridTableView>
                        </DetailTables>
                        <ColumnGroups>
                            <telerik:GridColumnGroup HeaderText="Location" Name="Location" HeaderStyle-HorizontalAlign="Center">
                            </telerik:GridColumnGroup>
                        </ColumnGroups>
                        <Columns>
                            <telerik:GridBoundColumn DataField="Date" FilterControlAltText="Filter Date column" HeaderText="Date" SortExpression="Date" UniqueName="Date" DataType="System.DateTime" DataFormatString="{0:MM/dd/yyyy}">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="Activity" FilterControlAltText="Filter Activity column" HeaderText="Activity" SortExpression="Activity" UniqueName="Activity">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="LocationFrom" FilterControlAltText="Filter LocationFrom column" HeaderText="From" SortExpression="LocationFrom" UniqueName="LocationFrom" ColumnGroupName="Location">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="LocationTo" FilterControlAltText="Filter LocationTo column" HeaderText="To" SortExpression="LocationTo" UniqueName="LocationTo" ColumnGroupName="Location">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="NetMiles" DataType="System.Decimal" FilterControlAltText="Filter NetMiles column" HeaderText="Net Miles" SortExpression="NetMiles" UniqueName="NetMiles">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="Amount" DataType="System.Decimal" FilterControlAltText="Filter Amount column" HeaderText="Amount" SortExpression="Amount" UniqueName="Amount">
                            </telerik:GridBoundColumn>
                            <telerik:GridButtonColumn ConfirmText="Delete this product?" ButtonType="PushButton"
                                CommandName="Delete" Text="Delete" UniqueName="DeleteColumn1">
                                <HeaderStyle Width="20px"></HeaderStyle>
                                <ItemStyle HorizontalAlign="Center" CssClass="MyImageButton"></ItemStyle>
                            </telerik:GridButtonColumn>
                            <telerik:GridTemplateColumn UniqueName="TemplateEditColumn">
                                <ItemTemplate>
                                    <asp:HyperLink runat="server" ID="EditLink" Text="Edit"></asp:HyperLink>
                                </ItemTemplate>
                            </telerik:GridTemplateColumn>
                        </Columns>
                    </MasterTableView>

                    <HeaderContextMenu EnableEmbeddedSkins="False"></HeaderContextMenu>
                </telerik:RadGrid>

and code behind for the OnItemCreaded

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridDataItem)
            {
                if (e.Item.OwnerTableView.Name == "Parent")
                {
                    HyperLink editLink = (HyperLink)e.Item.FindControl("EditLink");
                    editLink.Attributes["href"] = "javascript:void(0);";
                    editLink.Attributes["onclick"] = String.Format("return ShowEditForm('{0}','{1}','{2}','{3}');",
                        e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["EmpID"],
                        e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["RowID"],
                        e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["VoucherID"],
                        e.Item.ItemIndex);
                }
                else if (e.Item.OwnerTableView.Name == "Child")
                {
                    // nothing
                }
            }
        }

The RadWindow on Edit Link and the rows expand for the RadGrid are working, but when I click on a row to expand, I get this error on Firefox's console (Firebug):

SyntaxError: An invalid or illegal string was specified

}if(e[c].indexOf("{")!=-1){f.insertRule(e[c]+"}",f.cssRules.length);

http://localhost:53600/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=rsm_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bTelerik.Web.UI%2c+Version%3d2013.3.1114.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8d3dfe81-f887-4a80-ad14-8e882b52e5e6%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3ab7778d6c%3a24ee1bba%3a7165f74%3a1e771326%3af46195d3%3a6b3f73b3%3a8674cba1%3a7c926187%3ac08e9f8a%3a58366029%3a92fe8ea0%3afa31b949%3a874f8ea2%3a19620875%3a490a9d4e%3abd8f85e4%3aa51ee93e%3a59462f1
Line 1578

Thanks for your help,
Sam

[Viktor Tachev]

Hello Sam,

I tried replicating the error, however I was unable to. I am attaching a sample project that I used for testing. Would you give it a try and let me know what is different in your scenario?

Regards,
Viktor Tachev
Telerik

[Sam]

Hi Viktor,

I downloaded your sample and unzipped.  

1. Opened the extracted folder in Visual Studio 2013 via File->Open Website...
2. imported Telerik.Web.UI.dll and Telerik.Web.UI.Skins.dll
3. Run without debug in Visual Studio 2013
4. click expand the first row.  I get window error popup.

Please see attachment for the screenshot error in IE 11 (other versions get same error, too)

Thanks for your help,
Sam

[Viktor Tachev]

Hello Sam,

In order to avoid this error you need to disable the Browser Link feature in Visual Studio. I would also recommend taking a look at this thread where the issue is described.

Regards,
Viktor Tachev
Telerik