How I can use HTML and CSS Tags with a C# Event?

Question

net application and I want to create me a own Button with css and html and use the onclick event for execute c# code. But I get the error:

Runtimeerror in Microsoft JScript: "BtnAdd_Click" is undefine

Here is my Code:

ASPX file:

<div id="GuestListViewControls">
                <table>
                    <td><a href="#" class="GuestButtons" runat="server" onclick="BtnAdd_Click">Hinzufügen</a></td>
                </table>
               </div>

My C#:

protected void BtnAdd_Click(object sender, EventArgs e) 
        {
            Response.Write("Add");
        }

Can I use this Button with C# Code in a ASP.NET Application? :/

Your aspx is incorrect. You need to add a <tr> above <td> and close it just before </table>. — Nitesh
– Nitesh, Commented Oct 23, 2013 at 9:27
This doesn't solve my problem...and it works without <tr>, too; ;-) — Tarasov
– Tarasov, Commented Oct 23, 2013 at 9:30

Ramesh Rajendran · Accepted Answer · 2013-10-23 09:52:45Z

2

It's not a c# error, It's like a javascript error , Now You can use LinkButton for onclick event, It's look like also anchor tag

<asp:LinkButton ID="MyLink" runat="server" class="GuestButtons" OnClick="BtnAdd_Click" Text="Click Here"></asp:LinkButton>

or use onserverclick event instead of onclick event

<a href="#" runat="server"  class="GuestButtons" onserverclick="BtnAdd_Click">test</a>

edited Oct 23, 2013 at 9:52

answered Oct 23, 2013 at 9:35

Ramesh Rajendran

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2 Comments

Vinay Pratap Singh Bhadauria Over a year ago

@RameshRajendran it can be done with anchor tag only.

Ramesh Rajendran Over a year ago

@Rex , Yes we can use onserverclick ! But if the OP must need to Onclick event, The he can use linkbutton !

semao · Accepted Answer · 2013-10-23 09:37:22Z

2

You are using "A" tag. This is HTML Anchor control and it does not support server side event.

Use

<asp:Button id="mybutton" Text="Submit" runat="server" onclick="BtnAdd_Click" />

answered Oct 23, 2013 at 9:37

semao

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Vinay Pratap Singh Bhadauria · Accepted Answer · 2013-10-23 09:54:17Z

2

You can do it using HTML controls only you just need to use on onserverclick

Sample Test stuff

<a href="#" runat="server" onserverclick="anchorclick">test</a>

code behind

protected void anchorclick(object sender, EventArgs e)
{
     // do stuff here
}

See Refrence

HTML Anchor Server Side Click

HTML Button Click Server Side

edited Oct 23, 2013 at 9:54

answered Oct 23, 2013 at 9:42

Vinay Pratap Singh Bhadauria

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MakingItUp · Accepted Answer · 2013-10-23 09:41:36Z

1

You're getting this error:

Runtimeerror in Microsoft JScript: "BtnAdd_Click" is undefined

Because you're using an onclick event on an HTML anchor tag.

You need to use an asp:Button tag instead, for which the onclick event will point to a server-side method. Something like this:

<asp:Button class="GuestButtons" runat="server" onclick="BtnAdd_Click" text="Hinzufügen"></asp:Button>

answered Oct 23, 2013 at 9:41

MakingItUp

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Girish Sakhare · Accepted Answer · 2013-10-23 09:41:43Z

1

You are getting "Runtimeerror in Microsoft JScript: "BtnAdd_Click" is undefine" because onclick searches for the method in the Javascript.

One option would be have a javascript method on the href click and from that method you can invoke the server side method using Ajax post or get or simple .Ajax

Please refer solution 4 in the url http://www.codeproject.com/Questions/334635/how-to-call-a-csharp-function-in-a-href-onclick-ev

answered Oct 23, 2013 at 9:41

Girish Sakhare

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