按鈕列：

ItemCommand事件
DataGridCommandEventArgs參數提供了三個關鍵屬性
Iem 被單擊DataGridItem元素
CommandName 代表與被單擊的按鈕相關聯的命令名
CommandSource 代表引發事件按鈕的對象。

ButtonColumn類的關鍵屬性

ButtonType            按鈕的類型(LinkButton/PushButton)            

CommandName           用戶單擊列時調用的命令名稱

DataTextField         數據源的字段名(按鈕的標題)

DataTextFormatString 標題的顯示格式

FooterText           列的腳注文本

HeaderImageUrl       列標題圖像的URL

HeaderText           列標題文本

SortExpresstion      排序時使用表達式

Text                 按鈕標題(如果設置了則所有按鈕有同樣的文本)

1.
<asp:datagrid id="DataGrid1" 		runat="server" AutoGenerateColumns="False" DataKeyField="employeeid">
				<Columns>
					<asp:BoundColumn DataField="employeeid" HeaderText="ID"></asp:BoundColumn>
					<asp:BoundColumn DataField="firstname" HeaderText="FirstName"></asp:BoundColumn>
					<asp:BoundColumn DataField="lastname" HeaderText="LastName"></asp:BoundColumn>
					<asp:ButtonColumn Text="按鈕" HeaderText="More" CommandName="moreinfo">
						<ItemStyle Font-Bold="True" BackColor="LightBlue"></ItemStyle>
					</asp:ButtonColumn>
				</Columns>
			</asp:datagrid>
			<asp:Label id="LabelMoreInfo" style="Z-INDEX: 102; LEFT: 384px; POSITION: absolute; TOP: 88px"
				runat="server">MoreInfo</asp:Label></form>
2.*.cs
using System.Data.SqlClient;
using System.Text;
private void DataGrid1_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			if(e.CommandName=="moreinfo")
			{
				int nEmpID=(int)DataGrid1.DataKeys[e.Item.ItemIndex];
				string strConn,strCmd;
				strConn="server=localhost;uid=sa;pwd=;database=Northwind";
				strCmd="Select * From employees Where employeeid="+nEmpID.ToString();
				SqlConnection conn=new SqlConnection(strConn);
				SqlCommand cmd=new SqlCommand(strCmd,conn);
				conn.Open();
				SqlDataReader dr=cmd.ExecuteReader();
				dr.Read();
				LabelMoreInfo.Text=BuilderMoreInfoText(dr);
				dr.Close();
				conn.Close();
			}
		}
		private string BuilderMoreInfoText(SqlDataReader dr)
		{
			StringBuilder sb=new StringBuilder();
			sb.Append("<b>"+dr["title"]+"</b><br>");
			DateTime dtime=Convert.ToDateTime(dr["hiredate"]);
			sb.Append("Hired on"+dtime.ToShortDateString()+" from "+
				dr["country"]+"<hr>");
			sb.Append("<i>"+dr["Notes"]+"<hr>");
			return sb.ToString();
		}