This is an error I was receiving on a RadGrid when filtering
is neither a DataColumn nor a DataRelation for table Table on RadGrid

I was using a GridTemplateColum and I was binding a label to a data field. I then turned on GridFiltering by setting AllowFilteringByColumn="True" on the Grid properties.

When I tried to run a filter on this field:

 <telerik:GridTemplateColumn HeaderText="Contract Min Fee" SortExpression="MinFee"  >
     <ItemTemplate>
         <asp:Label ID="lblContractMinFee" runat="server" Text='<%# Bind("MinFee", "{0:C}") %>'></asp:Label>
     </ItemTemplate>
     <FooterTemplate>
         <asp:Label runat="server" ID="lblContractMinFeeTotal"></asp:Label>
      </FooterTemplate>
      <ItemStyle HorizontalAlign="Right" />
  </telerik:GridTemplateColumn>

I received this error is neither a DataColumn nor a DataRelation for table Table on RadGrid 

In order to fix this error I had to define a datafield on the GridTemplateColumn markup, like this:

<telerik:GridTemplateColumn HeaderText="Contract Min Fee" SortExpression="MinFee" DataField="MinFee" >
     <ItemTemplate>
         <asp:Label ID="lblContractMinFee" runat="server" Text='<%# Bind("MinFee", "{0:C}") %>'></asp:Label>
     </ItemTemplate>
     <FooterTemplate>
         <asp:Label runat="server" ID="lblContractMinFeeTotal"></asp:Label>
      </FooterTemplate>
      <ItemStyle HorizontalAlign="Right" />
  </telerik:GridTemplateColumn>