ListView怎么获取绑定行的ID？

Question

ListView中绑定的是照片数据，以下是前台代码<asp:ListView ID="ListView1" runat="server" DataKeyNames="PId">
    <ItemTemplate>
        <asp:Image ID="header" runat="server" Height="60px" Width="60px" ImageUrl='<%#Eval("PAddress") %>' /><br />
        <asp:TextBox ID="txtPhotoName" runat="server" Text='<%#Eval("PName") %>' ReadOnly="true" BorderStyle="None"></asp:TextBox>
        <asp:Button ID="btnQueren" runat="server" Text="确认修改" CommandArgument='<%#Eval("PId") %>' OnClick="Button3_Click" Visible="false" /><br />
        <asp:Button ID="btnupdate" runat="server" Text="编辑" CommandArgument='<%#Eval("PId") %>' OnClick="Button2_Click" />
       <asp:Button ID="btndelete" runat="server" Text="删除" CommandArgument='<%#Eval("PId") %>' OnClick="Button1_Click" /><br /><br />
    </ItemTemplate>
    </asp:ListView>现在想要通过<ItemTemplate>里的删除按钮删除数据库中的某张照片，可是每次都是删除的第一张，下面是我现在删除按钮事件下的代码，问题出在哪儿了？
int pid = int.Parse(((Button)FindControlExtend("btndelete", ListView1.Controls)).CommandArgument.ToString());        string sql = "delete tb_Photos where PId="+pid+"";
        if (common.DBCommon.adlData(sql))
        {
            Response.Write("<script>alert('删除成功！')</script>");
            photoBind();
        }
        else
        {
            Response.Write("<script>alert('暂时还不能删除哦！')</script>");
        }请大神指教！！listviewASP

Answer 1

http://blog.csdn.net/heker2007/article/details/1539380http://www.4guysfromrolla.com/articles/052709-1.aspx

Answer 2

应该是ID取值不对吧
在如下的事件中试试 protected void ListView1_ItemCommand(object sender, ListViewCommandEventArgs e)
        {
            Button btn = e.CommandSource as Button;
            if (btn.ID == "btndelete")
            {
                string pid = e.CommandArgument.ToString();
            }
        }

Answer 3

这个是成功后的代码：
前台：
<asp:ListView ID="ListView1" runat="server" DataKeyNames="PId" 
        onitemcommand="ListView1_ItemCommand">
    <ItemTemplate>
        <asp:Image ID="header" runat="server" Height="60px" Width="60px" ImageUrl='<%#Eval("PAddress") %>' /><br />
        <asp:TextBox ID="txtPhotoName" runat="server" Text='<%#Eval("PName") %>' ReadOnly="true" BorderStyle="None"></asp:TextBox>
        <asp:Button ID="btnQueren" runat="server" Text="确认修改" CommandArgument='<%#Eval("PId") %>' OnClick="Button3_Click" Visible="false" /><br />
        <asp:Button ID="btnupdate" runat="server" Text="编辑" CommandArgument='<%#Eval("PId") %>' OnClick="Button2_Click" />
       <asp:Button ID="btndelete" runat="server" Text="删除" CommandName="shanchu" CommandArgument='<%#Eval("PId") %>'/><br /><br />
    </ItemTemplate>
    </asp:ListView>后台：
 protected void ListView1_ItemCommand(object sender, ListViewCommandEventArgs e)
    {        if (e.CommandName == "shanchu")
        {
            int pid = Convert.ToInt32(e.CommandArgument);
            string sql = "delete tb_Photos where PId=" + pid + "";
            if (common.DBCommon.adlData(sql))
            {
                
                Response.Write("<script>alert('删除成功！')</script>");
                photoBind();
                
            }
            else
            {
                Response.Write("<script>alert('暂时还不能删除哦！')</script>");
            }        }
    }