WPF DatagridTextColumn Binding from codebehind

Hi,

I would like to bind validation rule on datagridTextColumn from code behind. I have this right now :

             foreach (DataColumn dc in view.Table.Columns)
                {
                    DataGridTextColumn column = new DataGridTextColumn();
                    column.Header = dc.ColumnName;
                    column.Binding = new Binding(string.Format("[{0}]", dc.ColumnName));
                    this.Columns.Add(column);
                }

How would I apply below thing on above DatagridTextColumn:

               <DataGridTextColumn Header="Field Name" Width="380">
                    <DataGridTextColumn.Binding >
                        <Binding Path="Col1" UpdateSourceTrigger="PropertyChanged">
                            <Binding.ValidationRules>
                                <loc:CellDataInfoValidationRule ValidationStep="UpdatedValue"/>
                            </Binding.ValidationRules>
                        </Binding>
                    </DataGridTextColumn.Binding>
                </DataGridTextColumn>

Please help to make all validation code in codebehind

Thanks

Dee