ASP.NET button not firing on click event

Question

I am new to Asp.net and my question may not be so professional. I am using the design of Udemy.com in my asp.net web forms project. I put the header and footer of udemy in a masterpage. But when I add a button to one of m web forms the click event will not fire.

<asp:Button ID="Button1" runat="server" onclick="Button1_Click1" Text="Button" />

protected void Button1_Click1(object sender, EventArgs e)
{
    Page.Title = "Sample Text";
}

To fix this problem, I deleted all of the scripts from my pages. Also I tried to set CausesValidation to False. But nothing helps. Could you help me fix this problem?

Update

I added the OnClick event to my code. But I still face that problem.

First find out Google, then ask here , take and learn here : msdn.microsoft.com/en-us/library/… — Ramesh Rajendran
– Ramesh Rajendran, Commented Dec 27, 2013 at 9:37
Open your browser's javascript console and see if there's any errors when you click the button. — brz
– brz, Commented Sep 4, 2014 at 18:01

CodingMate · Accepted Answer · 2014-01-03 16:37:36Z

14

All the previous answers are correct, except that you "already added" the OnClick event to the ".aspx" file. I don't know whether it is something in the template you're using, or somewhere else in the code. But I would recommend that you check the following (Based on my experience in being stuck in similar situations):

Do you have any Field Validators in your ".aspx" page? Perhaps one of those validators are fired and if they were without any Error Messages.
Have you copied that button from somewhere else? If yes, then try to add a new button and add its click event, by double clicking the button in the design mode. As sometimes the "OnClick" button's event is not registered on the ".designer.cs" file.

answered Jan 3, 2014 at 16:37

CodingMate

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2 Comments

MVCDS Over a year ago

I had field validators which came from somewhere else... they had display set as none ¬¬ Thanks! And I feel stupid

Anura Adhikari Over a year ago

If you have hidden fields with validators, then again this issue could occur. I found a similar situation where I've hide the rows like this with validator fields. <tr style="display: none;">. Removing / assigning default values to the fields, fixed the issue.

Michel Ayres · Accepted Answer · 2014-03-21 11:51:22Z

4

Some points you may try... The code that you posted (after update) should work.

If you open the Design part of your visual studio and double click in the button, This will lead you to the event click of that button, if there is not one event, then it'll create one for you.
Your button must be within the form tag.
To test the event click is firing, use Breakpoints not label or any other markup change, but if you want it ... you should check if the Title component has runat="server" attribute and it's within an update panel.

answered Mar 21, 2014 at 11:51

Michel Ayres

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1 Comment

MVCDS Over a year ago

Though not solved my problem, I would never think about using the design part to check if the event is right or not

user3827821 · Accepted Answer · 2014-08-22 06:43:51Z

4

This is a sample code , You have missed "OnClick="MyButton_Click" in your button.

aspx

<asp:Button ID="MyButton" **OnClick="MyButton_Click"** runat="server" />
code behind

protected void **MyButton_Click**(object sender, EventArgs e)
{
    // Put code here over there chuhu
}

answered Aug 22, 2014 at 6:43

user3827821

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Comments

felipe.zkn · Accepted Answer · 2014-05-14 22:16:18Z

2

Add CausesValidation = "false" attribute of button like:

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" CausesValidation="false"></asp:Button>

edited May 14, 2014 at 22:16

felipe.zkn

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answered Apr 14, 2014 at 9:46

Mayur Ajiwale

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Comments

Sain Pradeep · Accepted Answer · 2013-12-27 09:31:59Z

1

You are missing OnClick="Button1_Click". You need to add event like this

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"></asp:Button>

answered Dec 27, 2013 at 9:31

Sain Pradeep

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Comments

Brett Weber · Accepted Answer · 2014-09-04 17:57:58Z

1

If you are assigning the click handler in code behind, make sure that it is not inside an IsPostBack == false check :

void Page_Load (object oSender, EventArgs oEventArgs)
{
   if (IsPostBack == false)
   {
       oButton += new EventHandler(oButton_Click); // does not work
   }
   oButton += new EventHandler(oButton_Click); // does work
}

answered Sep 4, 2014 at 17:57

Brett Weber

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Comments

AbdulRahman Ansari · Accepted Answer · 2013-12-27 09:33:01Z

0

Your button should be like this

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"/>

answered Dec 27, 2013 at 9:33

AbdulRahman Ansari

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Sai Avinash · Accepted Answer · 2013-12-27 09:33:02Z

0

Can you please try this:

<asp:Button ID="Button1" runat="server" Text="Button" onClick="Button1_Click" />

You are not mentioning the event handler for the button click event.

hope it helps.

answered Dec 27, 2013 at 9:33

Sai Avinash

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Comments

Vignesh Kumar A · Accepted Answer · 2013-12-27 09:37:02Z

0

Try to place Button within form tag

as

<form id="#" runat="Server">
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"></asp:Button>
</form>

answered Dec 27, 2013 at 9:37

Vignesh Kumar A

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Comments

Ramesh Rajendran · Accepted Answer · 2013-12-27 09:47:58Z

0

This is a sample code , You have missed "OnClick="MyButton_Click" in your button.

aspx

<asp:Button ID="MyButton" **OnClick="MyButton_Click"** runat="server" />

code behind

protected void **MyButton_Click**(object sender, EventArgs e)
{
    // Put code here
}

My personal answer is, You need to learn more things in Google

Some best tutorials for asp.net

http://www.w3schools.com/aspnet/default.asp

http://www.asp.net/web-pages/tutorials

http://asp.net-tutorials.com/

http://quickstarts.asp.net/QuickStartv20/default.aspx and can learn lot of knowledge from MSDN website

You can understand more asp.net controls and etc....

answered Dec 27, 2013 at 9:47

Ramesh Rajendran

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Comments

Nagaraj S · Accepted Answer · 2013-12-27 09:49:13Z

0

Try this

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"></asp:Button>

Is this your page directive?

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

edited Dec 27, 2013 at 9:49

answered Dec 27, 2013 at 9:35

Nagaraj S

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Comments

Manoj Mevada · Accepted Answer · 2013-12-27 12:00:45Z

0

Please check button is define properly in yourpage.aspx.designer.cs file.

something like below code:

protected global::System.Web.UI.WebControls.Button Button1;

answered Dec 27, 2013 at 12:00

Manoj Mevada

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Comments

Amarnath Balasubramanian · Accepted Answer · 2013-12-30 06:58:09Z

Page directive like this

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

HTML

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />

the following code should be inside the Default.aspx.cs

protected void Button1_Click(object sender, EventArgs e)
    {
        Page.Title = "Sample Text";
    }

My guess of where might be the problem is there may be problem in the directive

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

or else you wouldn't have called the asp:Button tag inside the form tag

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

        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />

    </div>
    </form>

ann · Accepted Answer · 2014-07-07 08:41:26Z

0

Please Test the simple example in online aspdotnetfiddle.

Created sample program with single button & label control, when click on button, firing click event of button, in that assigning label text value.

edited Jul 7, 2014 at 8:41

ann

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answered May 4, 2014 at 12:14

user930323

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Comments

rayryeng · Accepted Answer · 2015-11-15 20:44:26Z

0

In my case, it wasn't firing the event because I was appending the button to the body of the master page and the <form> tag was in the <body> tag

I've solved the issue by appending the button to the <form> tag

Old code

$('body').append($(".ButtonsDiv"));

New code

$('#form1').append($(".ButtonsDiv"));

edited Nov 15, 2015 at 20:44

rayryeng

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answered Nov 15, 2015 at 20:28

mouhammad awab alkhaiamy

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Comments

Gediminas Masaitis · Accepted Answer · 2016-03-03 13:40:40Z

0

If you have two buttons and two validation summaries, you must add ValidationGroup = "Group2" for each validiation summary, textbox and button.

And for the other add: ValidationGroup="Group1", it should work then.

edited Mar 3, 2016 at 13:40

Gediminas Masaitis

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answered Mar 3, 2016 at 13:08

Mona Aldkheel

1

Comments

Jim Argeropoulos · Accepted Answer · 2016-10-07 14:36:07Z

0

If the problem is validation firing and your button shouldn't trigger validation, consider adding CausesValidation="false" to the attributes of your button.

answered Oct 7, 2016 at 14:36

Jim Argeropoulos

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Resource · Accepted Answer · 2017-08-24 13:14:52Z

0

Javascript can fail silently on your page, causing processing to be abandoned which prevents the click event from firing. If I suspect this is happening, I paste this immediately under the script tag before debugging:

window.onerror = function (message, filename, linenumber) {
        alert("JS error: " + message + " on line " + linenumber + " for " + filename);
}

Remove for production code.

answered Aug 24, 2017 at 13:14

Resource

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Marselus Chia · Accepted Answer · 2017-08-25 10:42:01Z

0

Check and try remove the attribute "required" on other input element. it works with in my case.. it took me while to find it out.

Read here this question also..same issue asp.net Button OnClick event not firing

answered Aug 25, 2017 at 10:42

Marselus Chia

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