Why value of textbox change on selecting value from dropdown list

Question

0.00/5 (No votes)

See more:

Good Ev everyone i am using jquery for my 2 textboxes 1.txtStartDate 2.txtEndDate , I have used first date of month as default date for firsttextbox and present date for second text box and on third dropdownList i have used Autopostback as :

<asp:DropDownList ID="ddlWorkType" CssClass="selectbox1 ddlWidth" ValidationGroup="tab1" runat="server" Enabled="true" AutoPostBack="true" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlWorkType_SelectedIndexChanged1">

whenever i select date in first textbox and then select value from dropdownlist it reset the vaue of first textbox again to default

example : textbox1=12-09-2017 textbox2 = 11-10-2017 as i select value in third text box it reset value of textbox1 = 01-10-2017

What I have tried:

$(function () {

           $("#txtStartDate").datepicker({

               dateFormat: 'yy-mm-dd',
               showOn: 'button',
               buttonImageOnly: true,
               buttonImage: '/Image/calender.jpg',
               buttonText: ""
           }).bind("change", function () {
               var minValue = $(this).val();
               minValue = $.datepicker.parseDate("yy-mm-dd", minValue);
           })
           var d = new Date();
           var currMonth = d.getMonth();
           var currYear = d.getFullYear();
           var startDate = new Date(currYear, currMonth, 1);
           $('#txtStartDate').datepicker('setDate', startDate);
           $("#txtEndDate").datepicker({
               dateFormat: 'yy-mm-dd',
               showOn: 'button',
               buttonImageOnly: true,
               buttonImage: '/Image/calender.jpg',
               buttonText: ""
           }).bind("change", function () {
               var minValue = $(this).val();
               minValue = $.datepicker.parseDate("yy-mm-dd", minValue);

           })
           $('#txtEndDate').datepicker('setDate', new Date());
       });

Posted 11-Oct-17 3:14am

Member 11644373

Updated 11-Oct-17 17:45pm

Add a Solution

Comments

Karthik_Mahalingam 11-Oct-17 9:23am

did you use update panel ?

Member 11644373 11-Oct-17 9:25am

update pannel on all textbox including dropdown also??

Karthik_Mahalingam 11-Oct-17 23:33pm

use Reply button, to post Comments/query to the user, so that the user gets notified and responds to your text.

Member 11644373 11-Oct-17 9:27am

I used control pannel als
o

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Karthik_Mahalingam · Accepted Answer · 2017-10-11T17:45:00

refer this

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>

    <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" />

    <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
    <script>
        $(function () {
            $("#datepicker").datepicker();
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
         
        <p>
            Date:
                <input type="text" id="datepicker">
        </p>
        <asp:DropDownList runat="server" ID="ddl" AutoPostBack="true" OnSelectedIndexChanged="Unnamed1_SelectedIndexChanged">
                    <asp:ListItem Text="text1" />
                    <asp:ListItem Text="text2" />
                </asp:DropDownList> 
        <asp:UpdatePanel runat="server">
            <ContentTemplate>
                
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="ddl" EventName="SelectedIndexChanged" />
            </Triggers>
        </asp:UpdatePanel>
    </form>
</body>
</html>