mardi 13 octobre 2020

Updated UpdatePanel Restores Back to Previous State

So, my problem is that in this case I would like to update my repeater when I click on each button but I want them to do different functions so I pass the EventHandlers to my Update function. Unfortunately, after the panel gets updated once, panel returns back to it's previous state and my button's event doesn't fire.In this case, RepeaterMinorControl_Click does get called but the buttons' events don't fire after that. Each button does an AsyncPostback.

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="10G.aspx.cs" Inherits="OEDUY.Grades._10._10G" ClientIDMode="AutoID" %>



<!DOCTYPE html>



<html xmlns="[http://www.w3.org/1999/xhtml](http://www.w3.org/1999/xhtml)">

<head runat="server">

<title></title>

<link rel="stylesheet" href="../../FormsStyleSheets/StyleSheets/10G.css" />

</head>

<body>

<form id="form1" runat="server">

<div class="titleDiv">

<span></span>

</div>

<asp:ScriptManager runat="server" ID="scriptManager"></asp:ScriptManager>

<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updatePFB">

<ContentTemplate>

<asp:Repeater runat="server" ID="buttonRepeater">

</asp:Repeater>

</ContentTemplate>

<Triggers>

<asp:AsyncPostBackTrigger ControlID="buttonRepeater" />

</Triggers>

</asp:UpdatePanel>

</form>

</body>

</html>

This is the C# code:

string mainPath;

string currentMinorKey;

string currentLessonKey;

string currentSeasonKey;



protected void Page_Load(object sender, EventArgs e)

{

mainPath = Context.Request.MapPath("~");

string[] dirs = Core.Core.DirectoryController.GetSubDirectories($"{mainPath}Grades\\10");

var req = Request.Form;

FillButtonRepeater(dirs, new Action<object, EventArgs>(RepeaterMinorControl_Click));

}



protected void FillButtonRepeater(string[] Values, Action<object, EventArgs> ButtonAction)

{

buttonRepeater.Controls.Clear();



foreach (string item in Values)

{

Button control = new Button() { Text = Core.Core.DirectoryNameController.GetValue(item), CssClass = "btns", ID = $"{item}btn", UseSubmitBehavior = false };

control.Click += ButtonAction.Invoke;

buttonRepeater.Controls.Add(control);

}

}



private void RepeaterMinorControl_Click(object sender, EventArgs e)

{

currentMinorKey = Core.Core.DirectoryNameController.GetKey((sender as Button).Text);

string[] dirs = Core.Core.DirectoryController.GetSubDirectories($"{mainPath}Grades\\10\\{currentMinorKey}");

FillButtonRepeater(dirs, new Action<object, EventArgs>(RepeaterLessonControl_Click));

}



private void RepeaterLessonControl_Click(object sender, EventArgs e)

{

currentLessonKey = (sender as Button).Text;

string[] dirs = Core.Core.DirectoryController.GetSubDirectories($"{mainPath}Grades\\10\\{currentMinorKey}\\{currentLessonKey}");

FillButtonRepeater(dirs, new Action<object, EventArgs>(RepeaterSeasonControl_Click));

}



private void RepeaterSeasonControl_Click(object sender, EventArgs e)

{

currentSeasonKey = Core.Core.DirectoryNameController.GetKey((sender as Button).Text);

string[] dirs = Core.Core.DirectoryController.GetSubDirectories($"{mainPath}Grades\\10\\{currentMinorKey}\\{currentLessonKey}\\Seasons\\{currentSeasonKey}");

FillButtonRepeater(dirs, new Action<object, EventArgs>(RepeaterControlDirectory_Click));

}



private void RepeaterControlDirectory_Click(object sender, EventArgs e)

{

}



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