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Export from Hierarchy Grid returns Object reference not set to an instance of an object.

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Grid

This is a migrated thread and some comments may be shown as answers.

Sam asked on 06 Sep 2011, 10:30 AM

Hi, I have master child grid and export functionality in both parent as well as child grid.
I do data binding in code behind. Export from the parent grid works fine but when user clicks on Export to Excel in child grid, it throws following exception.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the
            current web request. Information regarding the origin and location of the
            exception can be identified using the exception stack trace below.

Stack Trace:


            [NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.UI.Grid.Export.TableViewExporter.ExcelExportRenderForm(HtmlTextWriter nullWriter, Control form) +878
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +109
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +8756077
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +31
   System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +53
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40
   Telerik.Web.UI.Grid.Export.TableViewExporter.ExcelExportRenderPage(HtmlTextWriter nullWriter, Control page) +92
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +109
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3060

My ASPX template is:
<telerik:RadGrid ID="RGModels" runat="server" Width="100%" ShowStatusBar="true" AutoGenerateColumns="false"
   PageSize="10" AllowSorting="True" AllowMultiRowSelection="False" AllowPaging="True"
AllowAutomaticInserts="false" OnInsertCommand="RGModels_InsertCommand" Visible="true">
<PagerStyle Mode="NextPrevAndNumeric"></PagerStyle>
<MasterTableView Width="100%" Name="Models" DataKeyNames="ID" AllowAutomaticInserts="false"
AllowMultiColumnSorting="True" AutoGenerateColumns="false" HierarchyLoadMode="ServerOnDemand"
CommandItemDisplay="Top" EditMode="PopUp">
<CommandItemSettings AddNewRecordText="New business model" ShowExportToExcelButton="true" />
<EditFormSettings InsertCaption="Add new business model" UserControlName="Templates\DeplObjectCreate.ascx"
EditFormType="WebUserControl">
</EditFormSettings>
<DetailTables>
<telerik:GridTableView DataKeyNames="ID" Name="Sets" Width="100%" CommandItemDisplay="Top"
EditMode="PopUp">
<CommandItemSettings AddNewRecordText="New business (release) set" ShowExportToExcelButton="true" />
<EditFormSettings InsertCaption="Add new business (release) set" UserControlName="Templates\DeplObjectCreate.ascx"
EditFormType="WebUserControl">
</EditFormSettings>
<CommandItemStyle ForeColor="Yellow" />
<Columns>
<telerik:GridBoundColumn DataField="Name" HeaderText="Name" HeaderStyle-Width="20%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="Description" HeaderText="Description" HeaderStyle-Width="30%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="ShortName" HeaderText="Short name" HeaderStyle-Width="15%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="StateName" SortExpression="StateName" ReadOnly="True"
HeaderText="<%$ Resources:WebResource, State %>">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="BeginDate" HeaderText="Begin date" DataFormatString="{0:dd-MMM-yyyy}">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="EndDate" HeaderText="End date" DataFormatString="{0:dd-MMM-yyyy}">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="ID" HeaderText="ID" HeaderStyle-Width="2%" ItemStyle-HorizontalAlign="Left" UniqueName="ID" />
<telerik:GridBoundColumn DataField="ModelID" HeaderText="MID" HeaderStyle-Width="2%"
ItemStyle-HorizontalAlign="Left" UniqueName="MID" />
<telerik:GridTemplateColumn HeaderText="Account" UniqueName="ColumnRGModelsAccounts" >
<ItemTemplate>
<asp:ImageButton ID="LnkAccount" runat="server" Tooltip="Change deployment set parameters"
PostBackUrl='<%# "~/DeplAccounts.aspx?ProjectID=" & DataBinder.Eval (Container.DataItem,"DeploymentID").tostring & _
"&ModelID=" & DataBinder.Eval(Container.DataItem,"ModelID").tostring & _
"&SetID=" & DataBinder.Eval(Container.DataItem,"ID").tostring %>'
ImageUrl="./App_Themes/UP/bAccount.gif" meta:resourcekey="LnkEditResource1" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Review" UniqueName="ColumnRGModelsReview" >
<ItemTemplate>
<asp:ImageButton ID="LnkReview" runat="server" Tooltip="Review generated requests"
PostBackUrl='<%# "~/DeplReview.aspx?ProjectID=" & DataBinder.Eval (Container.DataItem,"DeploymentID").tostring & _
"&ModelID=" & DataBinder.Eval(Container.DataItem,"ModelID").tostring & _
"&SetID=" & DataBinder.Eval(Container.DataItem,"ID").tostring %>'
ImageUrl="./App_Themes/UP/bReview.gif" meta:resourcekey="LnkEditResource1" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Approve" UniqueName="ColumnRGModelsApprove" >
<ItemTemplate>
<asp:ImageButton ID="LnkApprove" runat="server" Tooltip="Approve changed requests"
PostBackUrl='<%# "~/DeplApprove.aspx?ProjectID=" & DataBinder.Eval (Container.DataItem,"DeploymentID").tostring & _
"&ModelID=" & DataBinder.Eval(Container.DataItem,"ModelID").tostring & _
"&SetID=" & DataBinder.Eval(Container.DataItem,"ID").tostring %>'
ImageUrl="./App_Themes/UP/Approve.gif" meta:resourcekey="LnkEditResource1" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Change" >
<ItemTemplate>
<asp:ImageButton ID="LnkEdit" runat="server" Tooltip="Change deployment set parameters"
PostBackUrl='<%# DataBinder.Eval(Container, "DataItem.ID", "~/DeplBUSetDetails.aspx?ID={0}") %>'
ImageUrl="./App_Themes/UP/Edit.gif" meta:resourcekey="LnkEditResource1" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Remove" meta:resourcekey="TemplateFieldResource2">
<ItemTemplate>
<asp:ImageButton ID="LnkRemove" runat="server" Visible="True" OnClientClick='<%# "DeplSetRemoveBtn(this,""" + DataBinder.Eval(Container.DataItem, "ID").ToString + """, " + Westwind.Utilities.WebUtils.EncodeJsString(DataBinder.Eval(Container.DataItem, "Name")) + "); return false;" %>'
AlternateText="Remove deployment model" ToolTip="Assigned requests will be 'orphaned'"
ImageUrl="./App_Themes/UP/bCut.gif" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
</Columns>
</telerik:GridTableView>
</DetailTables>
<Columns>
<telerik:GridBoundColumn DataField="Name" HeaderText="Name" HeaderStyle-Width="20%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="Description" HeaderText="Description" HeaderStyle-Width="30%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="ShortName" HeaderText="Short name" HeaderStyle-Width="15%"
ItemStyle-HorizontalAlign="Left" />
<telerik:GridBoundColumn DataField="StateName" SortExpression="StateName" ReadOnly="True"
HeaderText="<%$ Resources:WebResource, State %>">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="BeginDate" HeaderText="Begin date" DataFormatString="{0:dd-MMM-yyyy}">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="EndDate" HeaderText="End date" DataFormatString="{0:dd-MMM-yyyy}">
<HeaderStyle HorizontalAlign="Center" Width="10%" />
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="ID" HeaderText="ID" HeaderStyle-Width="2%" ItemStyle-HorizontalAlign="Left" UniqueName="ID" />
<telerik:GridBoundColumn DataField="DeplID" HeaderText="DID" HeaderStyle-Width="2%"
ItemStyle-HorizontalAlign="Left" UniqueName="DID" />
<telerik:GridTemplateColumn HeaderText="Change" meta:resourcekey="TemplateField">
<ItemTemplate>
<asp:ImageButton ID="LnkEdit" runat="server" AlternateText="Change deployment model parameters"
PostBackUrl='<%# DataBinder.Eval(Container, "DataItem.ID", "~/DeplBUModelDetails.aspx?ID={0}") %>'
ImageUrl="./App_Themes/UP/Edit.gif" meta:resourcekey="LnkEditResource1" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Remove" meta:resourcekey="TemplateFieldResource2">
<ItemTemplate>
<asp:ImageButton ID="LnkRemove" runat="server" Visible="True" OnClientClick='<%# "DeplModelRemoveBtn(this,""" + DataBinder.Eval(Container.DataItem, "ID").ToString + """, " + Westwind.Utilities.WebUtils.EncodeJsString(DataBinder.Eval(Container.DataItem, "Name")) + "); return false;" %>'
AlternateText="Remove business model" ToolTip="Will also remove sibling business sets"
ImageUrl="./App_Themes/UP/bCut.gif" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="5%" />
</telerik:GridTemplateColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>

code behind:
Private Sub RGModels_ItemCreated(sender As Object, e As Telerik.Web.UI.GridItemEventArgs) Handles RGModels.ItemCreated

' 4 build-in export buttons
'ExportToExcelButton()
'ExportToWordButton()
'ExportToPdfButton()
'ExportToCsvButton()

If TypeOf e.Item Is GridCommandItem Then
Dim ExportToExcelButton As Button = TryCast(TryCast(e.Item, GridCommandItem).FindControl("ExportToExcelButton"), Button)
If Not ExportToExcelButton Is Nothing Then ScriptManager.GetCurrent(Me.Page).RegisterPostBackControl(ExportToExcelButton)
Dim ExportToWordButton As Button = TryCast(TryCast(e.Item, GridCommandItem).FindControl("ExportToWordButton"), Button)
If Not ExportToWordButton Is Nothing Then ScriptManager.GetCurrent(Me.Page).RegisterPostBackControl(ExportToWordButton)
Dim ExportToPdfButton As Button = TryCast(TryCast(e.Item, GridCommandItem).FindControl("ExportToPdfButton"), Button)
If Not ExportToPdfButton Is Nothing Then ScriptManager.GetCurrent(Me.Page).RegisterPostBackControl(ExportToPdfButton)
Dim ExportToCsvButton As Button = TryCast(TryCast(e.Item, GridCommandItem).FindControl("ExportToCsvButton"), Button)
If Not ExportToCsvButton Is Nothing Then ScriptManager.GetCurrent(Me.Page).RegisterPostBackControl(ExportToCsvButton)
End If
End Sub

Private Sub RGModels_ItemCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles RGModels.ItemCommand
If e.CommandName = Telerik.Web.UI.RadGrid.ExportToExcelCommandName OrElse e.CommandName = Telerik.Web.UI.RadGrid.ExportToWordCommandName OrElse e.CommandName = Telerik.Web.UI.RadGrid.ExportToCsvCommandName Then
sender.ExportSettings.ExportOnlyData = True
sender.ExportSettings.IgnorePaging = True
sender.ExportSettings.OpenInNewWindow = True
sender.ExportSettings.HideStructureColumns = True
sender.MasterTableView.HierarchyDefaultExpanded = True
sender.ExportSettings.Excel.Format = GridExcelExportFormat.ExcelML
Select Case e.CommandName
Case "ExportToExcel"
sender.MasterTableView.ExportToExcel()
Case "ExportToWord"
sender.MasterTableView.ExportToWord()
End Select
End If
End Sub

5 Answers, 1 is accepted

answered on 06 Sep 2011, 12:45 PM

Hi,
Thanks for getting back to me.
We do use advance data binding in DetailTableDataBind an I've debugged through it and it does call the routine to set the datasource when we click on export button on child grid.

I've copied the function below.

Private Sub RGModels_DetailTableDataBind(ByVal source As Object, ByVal e As GridDetailTableDataBindEventArgs) Handles RGModels.DetailTableDataBind
Dim MyUserInfo As UsersDB = New UsersDB
Dim MyUserDetails As UserDetails = MyUserInfo.GetUserDetails(HttpContext.Current.User.Identity.Name, Nothing)
Dim BeginDate As DateTime
Dim EndDate As DateTime
Dim dataItem As GridDataItem = CType(e.DetailTableView.ParentItem, GridDataItem)
Dim culture As System.Globalization.CultureInfo = New System.Globalization.CultureInfo("en-GB")
'culture = My.Application.Culture - default to en-GB
Dim styles As System.Globalization.DateTimeStyles
Dim dateResult As DateTime
styles = System.Globalization.DateTimeStyles.None
If DateTime.TryParse(dataItem.Item("BeginDate").Text, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", BeginDate, dateResult, dateResult.Kind)
BeginDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", BeginDate)
End If
If DateTime.TryParse(dataItem.Item("EndDate").Text, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", EndDate, dateResult, dateResult.Kind)
EndDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", EndDate)
End If
Dim ID As Long = dataItem.GetDataKeyValue("ID").ToString()
Select Case e.DetailTableView.Name
Case "Sets"
e.DetailTableView.DataSource = GetSets(ID, BeginDate, EndDate)
'
' Check if columns can be displayed, we've review columns & approve columns
'
Dim MyMenusDB As MenusDB = New MenusDB
Dim myPage As String = Request.Url.AbsolutePath.Substring(Request.Url.AbsolutePath.LastIndexOf("/") + 1, Request.Url.AbsolutePath.Length - Request.Url.AbsolutePath.LastIndexOf("/") - 1)
Dim MyPageDetails As UIObjectDetails = MyMenusDB.GetUIObjectDetails(MyUserDetails.UserID, MyUserDetails.LanguageUPShortname, 0, Constants.TYPE_UIPAGE, myPage)
Call CheckColumns(MyUserDetails.UserID, MyUserDetails.LanguageUPShortname, MyPageDetails.ID, e.DetailTableView)
If MyUserDetails.InternalInfo <> 1 Then
e.DetailTableView.Columns.FindByUniqueName("ID").Display = False
e.DetailTableView.Columns.FindByUniqueName("MID").Display = False
End If
End Select
End Sub

answered on 07 Sep 2011, 03:32 PM

For your information: I want to export only child grid for the expanded master record. In RGModels_ItemCommand the funciton does sender.MasterTableView.ExportToExcel() . Is this right to export only child list for expanded parent row as I could not see any properties of GridCommandEventArgs to differentiate weather the call is from parent or child export.

Below is the code for NeedDataSource, I do not bind detail grid in there as it is already been done in the DetailTableDataBind.

Private Sub RGModels_NeedDataSource(ByVal source As Object, ByVal e As GridNeedDataSourceEventArgs) Handles RGModels.NeedDataSource
If Not e.IsFromDetailTable Then
Dim MyUserInfo As UsersDB = New UsersDB
Dim MyUserDetails As UserDetails = MyUserInfo.GetUserDetails(HttpContext.Current.User.Identity.Name, Nothing)
Dim MyDeploymentDB As DeploymentDB = New DeploymentDB
Dim MyDeploymentDetails As DeploymentDetails = New DeploymentDetails
If ViewState("MyDeploymentDetails") Is Nothing Then
CType(Master.FindControl("Message"), Label).Text = "MyDeploymentDetails viewstate does not exist when populating tab (PopulateGrid)"
Exit Sub
Else
MyDeploymentDetails = ViewState("MyDeploymentDetails")
End If
Dim BeginDate As DateTime
Dim EndDate As DateTime
Dim culture As System.Globalization.CultureInfo = New System.Globalization.CultureInfo("en-GB")
'culture = My.Application.Culture - default to en-GB
Dim styles As System.Globalization.DateTimeStyles
Dim dateResult As DateTime
styles = System.Globalization.DateTimeStyles.None
If DateTime.TryParse(MyDeploymentDetails.BeginDate, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", BeginDate, dateResult, dateResult.Kind)
BeginDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", BeginDate)
End If
If DateTime.TryParse(MyDeploymentDetails.EndDate, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", EndDate, dateResult, dateResult.Kind)
EndDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", EndDate)
End If
Dim ID As Long = MyDeploymentDetails.ID
RGModels.DataSource = GetModels(ID, BeginDate, EndDate)
'RGModels.DataBind()
If MyUserDetails.InternalInfo <> 1 Then
RGModels.Columns.FindByUniqueName("ID").Display = False
RGModels.Columns.FindByUniqueName("DID").Display = False
End If

End If
End Sub

Private Sub RGModels_DetailTableDataBind(ByVal source As Object, ByVal e As GridDetailTableDataBindEventArgs) Handles RGModels.DetailTableDataBind
Dim MyUserInfo As UsersDB = New UsersDB
Dim MyUserDetails As UserDetails = MyUserInfo.GetUserDetails(HttpContext.Current.User.Identity.Name, Nothing)
Dim BeginDate As DateTime
Dim EndDate As DateTime
Dim dataItem As GridDataItem = CType(e.DetailTableView.ParentItem, GridDataItem)
Dim culture As System.Globalization.CultureInfo = New System.Globalization.CultureInfo("en-GB")
'culture = My.Application.Culture - default to en-GB
Dim styles As System.Globalization.DateTimeStyles
Dim dateResult As DateTime
styles = System.Globalization.DateTimeStyles.None
If DateTime.TryParse(dataItem.Item("BeginDate").Text, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", BeginDate, dateResult, dateResult.Kind)
BeginDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", BeginDate)
End If
If DateTime.TryParse(dataItem.Item("EndDate").Text, culture, styles, dateResult) Then
Console.WriteLine("{0} converted to {1} {2}.", EndDate, dateResult, dateResult.Kind)
EndDate = dateResult
Else
Console.WriteLine("Unable to convert {0} to a date and time.", EndDate)
End If
Dim ID As Long = dataItem.GetDataKeyValue("ID").ToString()
Select Case e.DetailTableView.Name
Case "Sets"
e.DetailTableView.DataSource = GetSets(ID, BeginDate, EndDate)
'
' Check if columns can be displayed, we've review columns & approve columns
'
Dim MyMenusDB As MenusDB = New MenusDB
Dim myPage As String = Request.Url.AbsolutePath.Substring(Request.Url.AbsolutePath.LastIndexOf("/") + 1, Request.Url.AbsolutePath.Length - Request.Url.AbsolutePath.LastIndexOf("/") - 1)
Dim MyPageDetails As UIObjectDetails = MyMenusDB.GetUIObjectDetails(MyUserDetails.UserID, MyUserDetails.LanguageUPShortname, 0, Constants.TYPE_UIPAGE, myPage)
Call CheckColumns(MyUserDetails.UserID, MyUserDetails.LanguageUPShortname, MyPageDetails.ID, e.DetailTableView)
If MyUserDetails.InternalInfo <> 1 Then
e.DetailTableView.Columns.FindByUniqueName("ID").Display = False
e.DetailTableView.Columns.FindByUniqueName("MID").Display = False
End If
End Select
End Sub

Private Sub RGModels_ItemCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles RGModels.ItemCommand
If e.CommandName = Telerik.Web.UI.RadGrid.ExportToExcelCommandName OrElse e.CommandName = Telerik.Web.UI.RadGrid.ExportToWordCommandName OrElse e.CommandName = Telerik.Web.UI.RadGrid.ExportToCsvCommandName Then
sender.ExportSettings.ExportOnlyData = True
sender.ExportSettings.IgnorePaging = True
sender.ExportSettings.OpenInNewWindow = True
sender.ExportSettings.HideStructureColumns = True
sender.MasterTableView.HierarchyDefaultExpanded = True
sender.ExportSettings.Excel.Format = GridExcelExportFormat.ExcelML
Select Case e.CommandName
Case "ExportToExcel"
sender.MasterTableView.ExportToExcel()
Case "ExportToWord"
sender.MasterTableView.ExportToWord()
End Select
End If
End Sub

answered on 09 Sep 2011, 02:14 PM

Hello Sam,

You could differentiate the source table using the e.Item.OwnerTableView property like shown below:

Protected Sub RadGrid1_ItemCommand(sender As Object, e As GridCommandEventArgs)

If e.Item.OwnerTableView.Name = "MyDetailTable" Then

'more code

End If

End Sub

<DetailTables>

<telerik:GridTableView Name="MyDetailTable">

</telerik:GridTableView>

</DetailTables>

I'm afraid, however, that RadGrid does not support exporting of separate tableviews out of the box (although this may work in some scenarios).
Please excuse us for any inconvenience caused.

Best regards,
Daniel
the Telerik team

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