How to do validations of fields placed on bootstrap modal in code behind using ASP .NET

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I want to validate two fields in a bootstrap modal and I want to close the modal in ELSE part of the IF condition. The issue is, modal is closing before display the MesssageBoxModal modal. Please help me to solve the issue.

My .aspx file (markup) is as below

ASP.NET

<pre><%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestPage.aspx.cs" Inherits="User_Control.TestPage" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <!-- Bootstrap Core CSS -->
    <link href="CSS/bootstrap.css" rel="stylesheet" />

    <!-- jQuery -->
    <script src="JS/jquery-3.2.1.js"></script>
    <link href="CSS/jquery-ui.css" rel="stylesheet" />
    <script src="JS/jquery-ui.js"></script>

    <!-- Bootstrap Core JavaScript -->
    <script src="JS/bootstrap.js"></script>

    <script>
        function openModal() {
            $('#exampleModal').modal({ hide: true });
        };
        function openMessageBox() {
            $('#MesssageBoxModal').modal({ hide: true });
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

        <!-- Button trigger modal -->
        <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
            Launch demo modal
        </button>

        <!-- MAIM MODAL -->
        <asp:UpdatePanel ID="UpdatePanel2" runat="server">
            <ContentTemplate>
                <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
                    <div class="modal-dialog" role="document">
                        <div class="modal-content">
                            <div class="modal-header">
                                <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
                                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                    <span aria-hidden="true">×</span>
                                </button>
                            </div>
                            <div class="modal-body">
                                <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
                                <asp:TextBox ID="txtConfirmPassword" runat="server"></asp:TextBox>
                            </div>
                            <div class="modal-footer">
                                <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                                <asp:Button ID="Button1" runat="server" Text="Button" class="btn btn-primary" OnClick="Button1_Click" />
                            </div>
                        </div>
                    </div>
                </div>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
            </Triggers>
        </asp:UpdatePanel>

        <!-- MESSAGE BOX MODAL -->
        <div id="MesssageBoxModal" class="modal" tabindex="-1" role="dialog">
            <div class="modal-dialog" role="document">
                <div class="modal-content">
                    <div class="modal-header">
                        <h5 class="modal-title">Warning</h5>
                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                            <span aria-hidden="true">×</span>
                        </button>
                    </div>
                    <div class="modal-body">
                        <p>Field validation is failed. Please check and retry.</p>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                    </div>
                </div>
            </div>
        </div>
    </form>
</body>
</html>

My C# code behind is as below

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using CommonFunctions;

namespace User_Control
{
    public partial class TestPage : System.Web.UI.Page
    {
        DBTasks objDBTasks = new DBTasks();
        protected void Page_Load(object sender, EventArgs e)
        {
            
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            if (txtPassword.Text != txtConfirmPassword.Text)
            {
                //FAIL SCENARIO
                objDBTasks.manipulateData("insert into test_table values (now(), 'FAILED')");
                ScriptManager.RegisterStartupScript(Page, Page.GetType(), "MesssageBoxModal", "$('body').removeClass('modal-open');$('.modal-backdrop').remove();$('#MesssageBoxModal').hide();", true);
            }
            else
            {
                //SUCCESS SCENARIO
                //UPDATE DETAILS TO DATABASE CODE GOES HERE
                objDBTasks.manipulateData("insert into test_table values (now(), 'SUCCESS')");
                ScriptManager.RegisterStartupScript(Page, Page.GetType(), "exampleModal", "$('body').removeClass('modal-open');$('.modal-backdrop').remove();$('#exampleModal').hide();", true);
            }
        }
    }
}

What I have tried:

Please help me to avoid this issue...

Posted 28-Mar-18 9:38am

athulamanage

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