column dont belong to table?

[Bhuvan]

Hi

I Read Many forums but i didnt got the solution for this?

I will have my aspx code here
<Code>
  <telerik:RadGrid runat="server" ID="radgvInbox"  AutoGenerateColumns="false"  
GridLines="None"  Width="100%" BorderWidth="0px" AllowSorting="True" 
ShowGroupPanel="True"  style="margin-right: 0px" AllowPaging="true" Height="300px" 
            onprerender="radgvInbox_PreRender1">
             
                     <ClientSettings Scrolling-AllowScroll="true" Scrolling-UseStaticHeaders="true" Selecting-AllowRowSelect="true"
EnablePostBackOnRowClick="true" AllowDragToGroup="true" EnableRowHoverStyle="true" 
                      AllowColumnsReorder="True" ReorderColumnsOnClient="True">
                    <Selecting AllowRowSelect="True" />                                   
                    <Resizing AllowRowResize="True" AllowColumnResize="True" EnableRealTimeResize="True"
                    ResizeGridOnColumnResize="False"></Resizing>
                    </ClientSettings>
                                             
                    <MasterTableView TableLayout="Fixed" GroupLoadMode="Client" DataKeyNames="MessageID"
AdditionalDataFieldNames="Date" UseAllDataFields="true" RetrieveAllDataFields="true">                                         
                     <GroupByExpressions>
<telerik:GridGroupByExpression>
<GroupByFields>
<telerik:GridGroupByField FieldName="Received" HeaderValueSeparator=":" SortOrder="Descending" />
</GroupByFields>
<SelectFields>
<telerik:GridGroupByField FieldName="Received" HeaderText="Date" FormatString="{0:d}" />
</SelectFields>
</telerik:GridGroupByExpression>
</GroupByExpressions>


       <Columns>
                            <telerik:GridBoundColumn DataField="From" HeaderText="From">
       </telerik:GridBoundColumn>
                          <telerik:GridBoundColumn DataField="Subject" HeaderText="Subject">
       </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="Received" HeaderText="Received">
       </telerik:GridBoundColumn>
                        </Columns>

                    </MasterTableView>                        
                </telerik:RadGrid>
</Code>

In cs page

 radgvInbox.DataSource = dr;
        radgvInbox.DataBind();


thats what i am doing why i am getting that error..i think i missed a small thing ..will anyone help regarding this issue please

[Princy]

Hello Bhuvan,

I guess you are getting this error because the column you are trying to add in GroupByEdpression does not exist in the datatable. Can you check that?

Thanks,
Princy.