Gridview事件不会在代码背后触发

Question

我有下面的代码，我试图以编程方式创建一个事件处理程序，它运行时没有错误但是当我点击行中的一个按钮时，事件没有被触发。任何输入都会有所帮助。

            protected void Page_Load(object sender, EventArgs e)
    {
        for (int T = 0; T <= 26; T++)
        {
            Label x = new Label();
            x.ID = T.ToString();
            x.Text = "orem ipsum dolor sit amet, consectetur adipiscing elit. Nulla blandit id felis ac volutpat. Aenean tempor faucibus est, ac feugiat libero egestas sit amet. Aliquam";

            Label y = new Label();
            y.ID = "Title_" + T.ToString();
            y.Text = "Title " + T.ToString();



            RadioButton Radio1 = new RadioButton();
            Radio1.ID = "R_" + T.ToString();
            Radio1.Text = "Yes";
            Radio1.GroupName = "Radio_" + T.ToString();
            Radio1.CheckedChanged += new EventHandler(this.CheckedChanged);
            Radio1.AutoPostBack = true;

            RadioButton Radio2 = new RadioButton();
            Radio2.ID = "RX_" + T.ToString();
            Radio2.Text = "No";
            Radio2.GroupName = "Radio_" + T.ToString();
            Radio2.CheckedChanged += new EventHandler(this.CheckedChanged);
            Radio2.AutoPostBack = true;

            Panel StatusBar = new Panel();

            StatusBar.ID = "status_" + T.ToString();


            PlaceHolder pcl = new PlaceHolder();
            pcl.ID = "test_" + T.ToString();
            pcl.Controls.Add(y);
            pcl.Controls.Add(new LiteralControl("<br>"));
            pcl.Controls.Add(x);
            pcl.Controls.Add(new LiteralControl("<br>"));
            pcl.Controls.Add(Radio1);
            pcl.Controls.Add(Radio2);
            pcl.Controls.Add(new LiteralControl("<br>..."));
            form1.Controls.Add(pcl);
            form1.Controls.Add(StatusBar);
        }

        //form1.Controls.Add(new PlaceHolder { ID = "MyStatusBar" });
    }
    protected void test1()
    {
        Response.Write("this is a test");
    }
    protected void CheckedChanged(object sender, EventArgs e)
    {
        RadioButton tRadio = (RadioButton)sender;
        var T = tRadio.ID.Split('_')[1];

        var statusBarID = "status_" + T;

        var StatusBar = tRadio.Parent.FindControl(statusBarID) as Panel;

        if (tRadio.Text == "Yes")
        {


            Dictionary<string,string> names = new Dictionary<string,string>();
            names.Add("1","a");
            names.Add("2", "a");
            names.Add("3", "a");
            names.Add("4", "a");
            names.Add("5", "a");
            names.Add("6", "a");
            names.Add("7", "a");
            names.Add("8", "a");
            names.Add("9", "a");

            GridView gv = new GridView();
            gv.DataSource = names;


            ButtonField bOne = new ButtonField();
            bOne.CommandName = "buttonclicked";
            bOne.ButtonType = ButtonType.Button;
            bOne.Text = "Edit";
            gv.Columns.Add(bOne);
            gv.RowCommand += gv_RowCommand;

            gv.DataBind();
            StatusBar.Controls.Add(gv);




        }


    }
    void gv_RowCommand(object sender, GridViewCommandEventArgs e)
    {

    }

Answer 1

要触发事件，您需要在回发事件触发时重新生成gridview，请参阅下面的内容。但是代码仍然存在切换可见的问题。

   protected void Page_Load(object sender, EventArgs e)
        {
            for (int T = 0; T <= 26; T++)
            {
                Label x = new Label();
                x.ID = T.ToString();
                x.Text = "orem ipsum dolor sit amet, consectetur adipiscing elit. Nulla blandit id felis ac volutpat. Aenean tempor faucibus est, ac feugiat libero egestas sit amet. Aliquam";

                Label y = new Label();
                y.ID = "Title_" + T.ToString();
                y.Text = "Title " + T.ToString();

                RadioButton Radio1 = new RadioButton();
                Radio1.ID = "R_" + T.ToString();
                Radio1.Text = "Yes";
                Radio1.GroupName = "Radio_" + T.ToString();
                Radio1.CheckedChanged += new EventHandler(this.CheckedChanged);
                Radio1.AutoPostBack = true;

                RadioButton Radio2 = new RadioButton();
                Radio2.ID = "RX_" + T.ToString();
                Radio2.Text = "No";
                Radio2.GroupName = "Radio_" + T.ToString();
                Radio2.CheckedChanged += new EventHandler(this.CheckedChanged);
                Radio2.AutoPostBack = true;


                Panel StatusBar = new Panel();

                StatusBar.ID = "status_" + T.ToString();


                PlaceHolder pcl = new PlaceHolder();
                pcl.ID = "test_" + T.ToString();
                pcl.Controls.Add(y);
                pcl.Controls.Add(new LiteralControl("<br>"));
                pcl.Controls.Add(x);
                pcl.Controls.Add(new LiteralControl("<br>"));
                pcl.Controls.Add(Radio1);
                pcl.Controls.Add(Radio2);
                pcl.Controls.Add(new LiteralControl("<br>..."));
                form1.Controls.Add(pcl);
                form1.Controls.Add(StatusBar);

                ShowGridView(Radio1);
            }

            //form1.Controls.Add(new PlaceHolder { ID = "MyStatusBar" });
        }

        protected void test1()
        {
            Response.Write("this is a test");
        }

        protected void CheckedChanged(object sender, EventArgs e)
        {
            ShowGridView((RadioButton)sender);
        }

        void ShowGridView(RadioButton r)
        {
            RadioButton tRadio = r;
            var T = tRadio.ID.Split('_')[1];

            var statusBarID = "status_" + T;

            var StatusBar = tRadio.Parent.FindControl(statusBarID) as Panel;

            if (tRadio.Text == "Yes" && tRadio.Checked )
            {
                Dictionary<string, string> names = new Dictionary<string, string>();
                names.Add("1", "a");
                names.Add("2", "a");
                names.Add("3", "a");
                names.Add("4", "a");
                names.Add("5", "a");
                names.Add("6", "a");
                names.Add("7", "a");
                names.Add("8", "a");
                names.Add("9", "a");

                GridView gv = new GridView();
                gv.DataSource = names;

                ButtonField bOne = new ButtonField();
                bOne.CommandName = "buttonclicked";
                bOne.ButtonType = ButtonType.Button;
                bOne.Text = "Edit";
                gv.Columns.Add(bOne);
                gv.RowCommand += gv_RowCommand;

                gv.DataBind();
                StatusBar.Controls.Add(gv);
            }
        }

        void gv_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName.Equals("buttonclicked"))
            {
                System.Diagnostics.Debug.WriteLine("fired");
            }
        }