Cannot add content of type...

[Harun Residbegovic]

Hi,

I'm having a problem with the GridView control on a client's machine. When I or my colleagues compile and run it everything goes right. However, when we deploy on a client's machine we get an error message saying "Cannot add content of type 'Telerik.Windows.Controls.GridViewDataColumn' to an object of type 'Telerik.Windows.Controls.GridViewColumnCollection'. Error at object 'Telerik.Windows.Controls.GridViewDataColumn' in markup file 'CowculationsWindows;component/useradmin.xaml' Line 57 Position 18."

This is the code:

<telerik:RadGridView Margin="15,66,9,46" Name="rgvUsers" AutoGenerateColumns="False" AddingNewDataItem="rgvUsers_AddingNewDataItem" ValidationMode="Row" AutoGenerateHierarchyFromDataSet="True" ColumnsWidthMode="Auto">   
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataType="{x:Null}" HeaderText="Full Name" UniqueName="UserFullName" Header="Full Name"/>
                <telerik:GridViewDataColumn DataType="{x:Null}" HeaderText="User Name" UniqueName="UserName" Header="User Name"/>
                <telerik:GridViewDataColumn DataType="{x:Null}" HeaderText="Password" UniqueName="Password"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

The particular line where the error happens is this:

<telerik:GridViewDataColumn DataType="{x:Null}" HeaderText="Full Name" UniqueName="UserFullName" Header="Full Name"/>

The GridView uses hierarchy, so that might be an issue.

Please help.

Regards,

-Harun

[Vlad]

Hello Harun,

Any more info about the grid version and client machine environment will be appreciated. If you can send this project (via support ticket) we will gladly try to reproduce the problem locally.

Regards,
Vlad
the Telerik team

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[Harun Residbegovic]

Hi Vlad,

Installing the .NET Framework 3.5 SP1 fixed the problem. I hope this info will help if somebody else gets the same issue.

Thanks,

-Harun