Populate text boxes on dropdownlist select without postback

Question

0.00/5 (No votes)

See more:

My web page contains dropdownlist and two textbox. After selecting item from dropdownlist related data should be filled in two textbox. This should happen without post back.

ASP.NET

<asp:DropDownList ID="ddlSelectMail" runat="server" Width="51px" Height="16px"></asp:DropDownList>
        <asp:TextBox ID="txtMessageId" runat="server" Width="127px"></asp:TextBox></td>
        <asp:TextBox ID="txtSubject" runat="server" Width="301px" Height="16px"></asp:TextBox>

Posted 20-Feb-14 0:14am

Ami_Modi

Add a Solution

Comments

Ami_Modi 21-Feb-14 1:40am

Its so common thing.. Nobody is having answer?

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)

Abid Shk · Answer 1 · 2014-02-20T00:26:00

Solution 1

<asp:textbox id="Name" runat="server" width="220px" xmlns:asp="#unknown">
<asp:dropdownlist id="Under" runat="server" height="22px" width="223px" onchange="val()" xmlns:asp="#unknown">

function val() {
var date = document.getElementById("<%=Under.ClientID%>").value;
document.getElementById("<%=Name.ClientID%>").value = date;
}

Posted 20-Feb-14 0:26am

Abid Shk

Comments

Ami_Modi 20-Feb-14 6:29am

But where shell I fetch data form database and display in textbox?

Abid Shk 20-Feb-14 6:59am

Use Ajax Update panel to ptrevent postback

Ami_Modi 20-Feb-14 7:01am

Which controls shell I keep in update panel? The ddl or textbox or all the three?

Er. Ajay Chauhan 20-Feb-14 7:03am

all these three...

Ami_Modi 20-Feb-14 7:38am

If I do so three controls will be loaded again and they do not contain value which I got from table and it also do not retain value of ddl. Can u please help me with some code.