I have a Silverlight Datagrid, I'd like to make certain cells readonly programmatically. Specifically I have a CellEditingTemplate, I'd like to turn the cell editing off or on depending on the value of CategoryTypeName (see the xmal below).

               <local:DataGridTemplateColumn Header="Category" >
                    <local:DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding CategoryTypeName}"/>
                        </DataTemplate>
                    </local:DataGridTemplateColumn.CellTemplate>
                    <local:DataGridTemplateColumn.CellEditingTemplate>
                        <DataTemplate>
                                <ComboBox 
                                  Width="90"
                                  x:Name="CategoryCombo"
                                  ItemsSource="{Binding CategoryTypes}"
                                  DisplayMemberPath="Name"
                                  SelectionChanged="CategoryCombo_SelectionChanged"
                                  />
                        </DataTemplate>
                    </local:DataGridTemplateColumn.CellEditingTemplate>
                </local:DataGridTemplateColumn>

Is there a way to do this?

Any help would be very much appreciated.

Thanks in advance.