Hello Lyuba

Sorry — false alarm.  I had a block of code in my markup that was commented out that was causing the error.  When I removed it, the problem cleared.  However, the code that I had commented out was for community.infragistics.com/forums/p/50123/264288.aspx#264288 that I’m still waiting to hear from someone.

Thank you

Not so fast.  I'm using WebDataGrid 10.3 with the following and I'm getting the error:

 

 

 

 

 

 

 

 

 

 

 

<EditorProviders>
    <ig:DropDownProvider ID="TerritoryProvider">
        <EditorControl ID="EditorControl1" runat="server"
  DataSourceID="SqlDataSource2" DisplayMode="DropDownList"
            DropDownContainerMaxHeight="300px" EnableAnimations="True"
            TextField="mktgrpkey" ValueField="mktgrpname"
            EnableDropDownAsChild="False" DropDownContainerHeight="300px" >
            <DropDownItemBinding TextField="mktgrpkey" ValueField="mktgrpname">
            </DropDownItemBinding>
        </EditorControl>
    </ig:DropDownProvider>
</EditorProviders>

<ig:CellEditing  Enabled="true" >
    <ColumnSettings>
            <ig:EditingColumnSetting ColumnKey="Territory" EditorID="TerritoryProvider" />
    </ColumnSettings>
</ig:CellEditing>

Please advise on how to correct.