DataList中CommandName
我点击DataList中三个CommandName分别为edit、delete、update的LinkButton按钮

它触发吃的函数类型是  
  protected void Edit_But_Click1(object sender, EventArgs e)
  {

  }
  protected void Del_But_Click(object sender, EventArgs e)
  {

  }
  protected void LinkButton2_Click(object sender, EventArgs e)
  {

  }
为什么触发的不是 protected void LBtnUpdate_Click(object sender, DataListCommandEventArgs e)？我那里做错了？我是新手来的，不是很懂，求各位高手指点指点
我的datalist代码
  <asp:DataList id="DataList1" runat="server" CellPadding="2" 
  ForeColor="#333333" style="margin-left: 12px"
  OnItemCommand="DataList1_ItemCommand" 

  OnEditCommand="DataList1_EditCommand" 

  OnDeleteCommand="DataList1_DeleteCommand" 

  OnUpdateCommand="DataList1_UpdateCommand" 
  >

   
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
  <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
  <ItemStyle BackColor="#EFF3FB" />
<ItemTemplate>
<table cellspacing="0" cellpadding="0" width="600px" border="1">
  <tr>
<td align="center"><br>
<table cellpadding="0" cellspacing="0" border="0" width="470">
  <tr>
<td style=" text-align:center; width:51%; height:20px; text-align:left">姓名：<%# DataBinder.Eval(Container.DataItem, "addrName")%></td>
<td style=" text-align:center; width:77%; height:20px; text-align:left">关系：<%# DataBinder.Eval(Container.DataItem, "addrRelation")%></td>
  </tr>
<tr> 
  <td style=" width:51%; height:20px; text-align:center">
  <asp:LinkButton CommandName="edit" ID="Edit_But" ForeColor="#003366" runat="server" onclick="Edit_But_Click1" Text="编辑"></asp:LinkButton>
  </td>
  <td style=" width:50%; height:20px; text-align:left">
  <asp:LinkButton ID="Del_But" ForeColor="#003366" CommandName="delete" runat="server" onclick="Del_But_Click">删除</asp:LinkButton>
  </td>
  </tr>
</table>
  </td>
  </tr>
</table>
</ItemTemplate>
  <AlternatingItemStyle BackColor="White" />
  <EditItemTemplate>
  <table cellspacing="0" cellpadding="0" width="900" align="center" border="1">
<tr>
  <td align="center"><br>
<table cellpadding="0" cellspacing="0" border="0" width="900">
  <tr>
<td style=" width:33%">姓名：