点击大talist，没反应

点击大talist，没反应，而且在该方法开始设置断点，都不会停下，也没有任何反应。

 protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
    {

       
        int i = e.Item.ItemIndex;
        string name;
        switch (i)
        {
            case 0: name = "CLFJJK1"; break;
            case 1: name = "GYFJJK1"; break;
            case 2: name = "KBFJJK1"; break;
            case 3: name = "HXFJJK1"; break;
            case 4: name = "YXFJJK1"; break;
            case 5: name = "YXFJJK2"; break;
            case 6: name = "DXYFJJK1"; break;
            default: name = ""; break;
        }
       
        if (e.CommandName == "machine")
        {
            Response.Redirect("MachineInfo.aspx?name=" + name);
        }
    }

结果发现，每次点击，都会首先触发page_load过程，所以才不会执行DataList1_ItemCommand。

解决方法：在Page_Load中加入 if (!IsPostBack)，问题解决！