JavaScript functions prevent C# functions from being executed?

Question

On my aspx page I have two buttons. One calls some javascript and the other calls a C# function on the code-page. When I call the javascript file in the head of the document, the JavaScript function works well but the C# does not. Clicking on the button does not do anything. If I remove the javascript call then the C# function works normally.

How can I overcome this? It seems as if it is expecting to find the C# function within the JavaScript file.

ASP:

<head>
<script src="MyFunctions.js" language="javascript" type="text/javascript"></script>
</head>
<body>
<asp:Button id="btn1" Text="Submit" runat="server" OnClick="buttonSumbit_Click" />
<asp:Button id="btn2" Text="Show" runat="server" OnClientClick="buttonShow_Click()" />
</body>

C#:

protected void buttonSumbit_Click(object sender, EventArgs e)
{
//SOME CODE HERE
}

JavaScript:

function buttonShow_Click()
{
//SOME CODE HERE
}

If one calls javascript and other calls c# do you click both the buttons at the same time !? — Sakthivel
– Sakthivel, Commented Feb 20, 2013 at 11:18
The language attribute of script elements has been deprecated long ago. — Marcel Korpel
– Marcel Korpel, Commented Feb 20, 2013 at 11:24
are you missing some code here?? or this is the total code present in the .aspx page? — Parv Sharma
– Parv Sharma, Commented Feb 20, 2013 at 11:27
I don't click both buttons at the same time. The javascript function sets a div's display attribute from 'hidden' to 'block', and the C# function writes data to database. — Patrick Keane
– Patrick Keane, Commented Feb 20, 2013 at 12:08
Yes there is some code missing, such as <form runat="server"> — Patrick Keane
– Patrick Keane, Commented Feb 20, 2013 at 12:08

Apurv Gupta · Accepted Answer · 2013-02-20 11:18:31Z

2

You need to put all Asp.Net server controls inside a <form runat="server"></form> tag

answered Feb 20, 2013 at 11:18

Apurv Gupta

8607 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Patrick Keane Over a year ago

all controls are within the <form> tags. The C# functions work perfectly when I don't have the JavaScript.js file linked to the page.

Ahmed Atia · Accepted Answer · 2013-02-20 11:34:16Z

1

You need to modify your javascript function call to be like this

<asp:Button id="btn2" Text="Show" runat="server" OnClientClick="return buttonShow_Click()" />

and make sure that your javascript function returns true so postback (execute C# function) happens. If your javascript function return false, postback to server won't happen.

answered Feb 20, 2013 at 11:34

Ahmed Atia

18k26 gold badges95 silver badges135 bronze badges

2 Comments

Patrick Keane Over a year ago

My C# functions are still not available. I've tried removing the button with the javascript on-click event. The other buttons still do not work. They only work when I remove the line: <script type="text/javascript" src="Javascript.js"></script>

Ahmed Atia Over a year ago

If so can you please share your Javascript.js file?

Sakthivel · Accepted Answer · 2013-02-20 11:23:11Z

0

I Suggest you to use this for calling javascript functions:

OnClientClick="if(!hidepopup())return false;"

you can also call javascript functions from codebehind:

Page.ClientScript.RegisterStartupScript(this.GetType(), "Call my function", "jsfunction();", true);

answered Feb 20, 2013 at 11:23

Sakthivel

1,9382 gold badges23 silver badges48 bronze badges

Collectives™ on Stack Overflow

JavaScript functions prevent C# functions from being executed?

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related