Implement a combo box control in an editable ASPxGridView grid

protected override void OnInit(EventArgs e)
{
   base.OnInit(e);

   //Load combo box table list
   DataTable tbl = this.ProjectsTbl;

   // get the grid column.
   DevExpress.Web.ASPxGridView.GridViewDataComboBoxColumn col = this.grd.Columns["sProjectID"] as DevExpress.Web.ASPxGridView.GridViewDataComboBoxColumn;
   if (col != null)
   {
      // set the data source for the column.
      col.PropertiesComboBox.DataSource = tbl;
   }
}

protected void grd_CellEditorInitialize(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewEditorEventArgs e)
{
   //check if the current cell is a Combo box,then bind the data
   DevExpress.Web.ASPxEditors.ASPxComboBox o = e.Editor as DevExpress.Web.ASPxEditors.ASPxComboBox;
   if (o != null)
   {
      o.DataBindItems();
   }
}