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ASP.NET button does not fire click event

I am new to Asp.net and my question may not be as professional. I am using the Udemy.com project in my asp.net web form project. I put udemy header and footer in the masterpage . But when I add a button to one of the 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 scripts from my pages. I also tried setting CausesValidation to False. But nothing helps. Could you help me solve this problem?

Update

I added the OnClick event to my code. But I am still facing this problem.

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19 answers

All of the previous answers are correct, except that you have already added the OnClick event to ".aspx". I don't know if this is something in the template you are using, or somewhere else in the code. But I would recommend you check the following (based on my experience of getting stuck in similar situations):

  • Do you have any field validators on the ".aspx" page? Perhaps one of these validators is running, and if they do not have error messages.
  • Have you copied this button from another location? If so, try adding a new button and adding a click event by double-clicking the button in design mode. Since sometimes the "OnClick" button event is not registered in the ".designer.cs" file.
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Some points you can try ... The code you posted (after the update) should work.

  • If you open part of the design of your visual studio and double-click on the button, this will lead you to click on the button on this button; if there are no events, it will create for you.
  • Your button should be in the form tag.
  • To check if you clicked on an event, use Breakpoints not a label or any other markup change, but if you want ... you should check if the Title attribute has the runat="server" attribute and it is in the update panel.
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This is sample code, you 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 }
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Add CausesValidation = "false" button attribute:

 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" CausesValidation="false"></asp:Button>
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You are missing OnClick="Button1_Click" . You need to add such an event.

 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"></asp:Button>
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If you assign a click handler behind the code, make sure that it is not inside the 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 }
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Your button should be like this

 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"/>
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Can you try the following:

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

You do not mention an event handler for the button click event.

hope this helps.

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try it

 <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" %>
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Try putting the button in the form tag

a

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

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

My guess about where the problem might be may be the problem in the directive

Default.aspx

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

otherwise you would not name 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>
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This is sample code, you missed "OnClick =" MyButton_Click "in your button.

Aspx

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

code for

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

My personal answer: you need to know more things on 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 a lot of knowledge from the MSDN website

You can understand more asp.net controls, etc.

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Please check that the button is correctly defined in yourpage.aspx.designer.cs file.

something like the code below:

 protected global::System.Web.UI.WebControls.Button Button1;
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Please check out a simple example in the online aspdotnetfiddle .

The created sample program with one click of a button and an inscription, when a button is pressed, a button presses an event button, when a text character is assigned a value.

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In my case, this event did not fire, because I added a button to the body of the main page, and the <form> tag was in the <body>

I solved the problem by adding a button to the <form>

Old code

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

New code

 $('#form1').append($(".ButtonsDiv"));
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If you have two buttons and two validation bulletins, you must add ValidationGroup = "Group2" for each bulletin summary, text box, and button.

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

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If the problem is to activate the check, and your button should not start the check, consider adding CausesValidation = "false" to the attributes of your button.

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Javascript may crash unexpectedly on your page, as a result of which processing will stop, which will prevent the click event from firing. If I suspect this is happening, I insert this directly below the script tag before debugging:

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

Delete for production code.

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Check and try to remove the “required” attribute on another input element. it works in my case .. it took me a while to figure this out.

Read this question here. asp.net OnClick button does not start

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