public class EditTemplateColumn : ITemplate
{
    public EditTemplateColumn(string colname)
    {
        m_strColName = colname;
    }

    public void InstantiateIn(Control container)
    {
        Label edt = new Label();
        edt.DataBinding += new EventHandler(this.OnDataBinding);

        container.Controls.Add(edt);
    }

    public void OnDataBinding(object sender, EventArgs e)
    {
        Label edt = (Label )sender;

        DataGridItem container = (DataGridItem)edt.NamingContainer;
        edt.Text = DataBinder.Eval(container, "DataItem." + this.m_strColName).ToString();
       // edt.Text = ((DataRowView)container.DataItem)[m_strColName].ToString();
    }

加载

 protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        TemplateColumn obj = new TemplateColumn();

        obj.ItemTemplate = new EditTemplateColumn("Birthday");
        obj.HeaderText = "itemTemplete";
       
        this.DataGrid1.Columns.Add(obj);
    }