关于给处于编辑中的datagrid的编辑框指定宽度的问题

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)

              {

            //找到编辑行

                     if(e.Item.ItemType==ListItemType.EditItem)

                     {

                //查找每个编辑行中的格子

                            for(int i = 0;i<e.Item.Cells.Count;i++)

                            {

         //如果编辑格中控件数量大于0的话，也就是每个格子中都含有一个textbox的话

                                   if(e.Item.Cells[i].Controls.Count>0)

                                   {

                                          try

                                          {

                                                 //把它们转换成TextBox

                                                 TextBox tb = (TextBox)e.Item.Cells[i].Controls[0];

                                                 //指定宽度

                                                 tb.Width = 70;

                                          }

//一定要有catch，因为有些转换是无效的。

                                          catch

                                          {}

                                   }

                            }

                     }

              }