How to programmatically add a data template (combobox) to a dataGrid

Question

Hi

hope somebody can help with this.

I have to extend the functionality of a custom control.

This control extends the dataGrid but adds certain extra customer required functionality to it.

I need to add a datatemplate of a combobox to this datagrid at runtime only (as it is based on the users selection of data to be displayed)

how do I programmatically add the template to the grid

I have been able to add a textcolumn in as follows but I can't add a datatemplate in the same manner.

var column = new DataGridTextColumn();

                column.Header = item.Caption;

                var binding = new Binding(string.Format("[{0}]", item.Index));
                if (item.ValueDictionary == null)
                {
                    binding.Converter = _stringFormatter;
                    binding.ConverterParameter = item.FormatString;
                }
                else
                {
                    binding.Converter = _listToStringConverter;
                    binding.ConverterParameter = item.ValueDictionary;
                }
                binding.ConverterCulture = System.Threading.Thread.CurrentThread.CurrentCulture;

                column.Binding = binding;
                column.HeaderStyle = GetStyle(item.HeadingAlignment, true);
                column.CellStyle = GetStyle(item.CellAlignment, false);

                column.IsReadOnly = this.IsReadOnly || !item.IsEditable;

                this.Columns.Add(column);

any help would be excellent Thanks

Col