Button 的CommandName 用法

<div>
        <asp:Button ID="Button1" runat="server" CommandArgument="fbi" CommandName="sort"
            OnCommand="Button1_Command" Text="我是ＦＢＩ" />&nbsp; &nbsp;
        <asp:Button ID="Button2" runat="server" CommandArgument="fu" CommandName="sort" OnCommand="Button1_Command"
            Text="我是福尔摩斯" />
        &nbsp; &nbsp;<asp:Button ID="Button3" runat="server" CommandArgument="cia" CommandName="ccia"
            OnCommand="Button1_Command" Text="我是ＣＩＡ" />
        &nbsp; &nbsp;<asp:Button ID="Button4" runat="server" CommandArgument="cia" CommandName="bande"
            OnCommand="Button1_Command" Text="我是邦德" /><br />
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
        <br />
        <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br />
        <br />
        <asp:Label ID="Label3" runat="server" Text="Label"></asp:Label><br />
        <br />
        <br />
        <asp:Label ID="Label4" runat="server" Text="Label"></asp:Label><br />
        <br />

代码如下：要注意看，关键在这里啊！

 protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Command(object sender, CommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "sort":
                Sort_Listt((String)e.CommandArgument);
                break;
            case "ccia":
                Label3.Text = "我是一个ＣＩＡ，帅吧！";
                break;
            case "bande":
                Label4.Text = "我是邦德啊！假的！！";
                break;

        }
    }
    void Sort_Listt(string commandArgument)
    {

        switch (commandArgument)
        {
            case "fbi":
                Label1.Text = "真的！我是一个ＦＢＩ";
                break;
            case "fu":
                Label2.Text = "假的！我不是福尔摩斯，它已经老死了！！";
                break;

        }
    }