LinkButton click event not firing asp.net

Question

I dont know why linkbutton onclick event is not firing. I have tried rewriting the code. I have tried to redirect directly on button click function. I have tried setting a break point inside dashbut_Click() on redirectUser() line but it never reaches there. Kindly help me figure this out.

HTML:

<li><asp:LinkButton ID="dashbut" runat="server" 
           CausesValidation="false" 
           OnClick="dashbut_Click"
           Text="Dashboard">
               <img src="images/dash.png" height="25" width="25" class="fa fa-tachometer" /><span> Dashboard</span>
    </asp:LinkButton>
 </li>

Code Behind:

protected void dashbut_Click(object sender, EventArgs e)
{
    //Response.Redirect("~/Views/Portal/AdminDashboard.aspx");
    redirectUser();
}

private void redirectUser()
{
    string myConnection = dbController.connectionString;
    SqlConnection conn = new SqlConnection(myConnection);

    string userCheckQuery = "SELECT UserType from tblUsers where ID = '" + USERid + "'";
    SqlCommand cmd1 = new SqlCommand(userCheckQuery, conn);
    conn.Open();
    bool userType = (bool)cmd1.ExecuteScalar();
    conn.Close();

    if (userType == true)
    {
        Response.Redirect("~/Views/Portal/AdminDashboard.aspx");
    }
    else if (userType == false)
    {
        Response.Redirect("~/Views/Portal/Dashboard.aspx");
    }
}

EDIT:

It seems that the LinkButton click event is not firing because of a JS Error. I dont know how that is related but when I click on the button and view the error on browser Inspect Element I see the following TypeError.

Uncaught TypeError: theForm.submit is not a function
at __doPostBack (NewArtist.aspx:63)
at <anonymous>:1:1

This is the script:

<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
    theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
    }
}
//]]>
</script>

Error is on theForm.submit(); line.

This is beyond me. Help me out.

it doesn't go in to redirectUser ? did you put a break point and see if its throwing some kind of exception or something? — psj01, Jan 06 '17 at 20:16
Yes I tried putting a break point on redirectUser() function call. But when I click on the LinkButton nothing happens. It doesn't redirect nor does it throw an exception — el323, Jan 06 '17 at 20:18
@MartinE It is fired when the page loads but not fired when clicking on the button. But PageLoad should fire on button click, right? Why do you think its not? — el323, Jan 06 '17 at 20:43
Hm, normally the click event is a postback to the server and should trigger the page load event first before handling the click event. Are you using some JS, or a ScriptManager object? — Martin E, Jan 06 '17 at 20:49
yes I am using JavaScript, But how is that related to this link button? — el323, Jan 06 '17 at 20:52
Try removing the LinkButton and the `dashbut_Click` method. Then recreate them. It worked for [this question](http://stackoverflow.com/questions/41490795/ontextchanged-event-not-triggering-http-post#comment70189841_41490795). If not there could be a javascript error/interference somewhere as @MartinE also suggests — VDWWD, Jan 06 '17 at 20:55
I would like to see all events are not fire or just one button click event. Could you set a break point at Page_Load event, and see it stop? — Win, Jan 06 '17 at 21:03
@Win Setting a breakpoint on PageLoad event does stop when page loads for the first time but later on when I click on the linbutton it doesn't which means that the event is not firing. As I see it there is something wrong with JS. I have updated the question. — el323, Jan 06 '17 at 21:09
@MartinE Yes you are right. Its something with JS but I am not sure what. I have updated the question. — el323, Jan 06 '17 at 21:11
@VDWWD I have recreated the button and function but it seems its JS that is the problem here. — el323, Jan 06 '17 at 21:11
Well, we are like shooting in the dark without seeing the rest of the code. So, create a new ASPX page *(without master page)*, and add a ***LinkButton*** with ***OnClick*** event, and try debug it? — Win, Jan 06 '17 at 21:14

score 1 · Answer 1 · edited May 23 '17 at 12:10

1

So the problem seemed to be with JavaScript. Actually there was a button on my page with ID=submit this was overriding submit() function on the form, hence the error. This helped Thumbs Up for Stackoverflow Community.

edited May 23 '17 at 12:10

Community

1
1

answered Jan 06 '17 at 21:31

el323

2,220
7
35
68

jmag · Answer 2 · 2017-01-06T21:18:29.680

0

Sorry if I can't comment due to low reputation points. I would like to know if you need CauseValidation set to false.

Try adding usesubmitbehavior="false".

edited Jan 06 '17 at 21:18

answered Jan 06 '17 at 20:20

jmag

578
1
6
16

I have tried your code and it worked. Is possible that the event is duplicated somewhere else. causing this one not to fire? – jmag Jan 06 '17 at 20:52
try adding this to your Linkbutton. submitbehavior="false" – jmag Jan 06 '17 at 21:12
I have updated the question. Uncaught exception in JavaScript is causing the event not to fire – el323 Jan 06 '17 at 21:12

LinkButton click event not firing asp.net

2 Answers2