How to call function in code-behind in c# with jquery?

Question

How to call function in code-behind in c# with jquery?

I have this code behind :

protected void btn_Click(object sender, EventArgs e)
{
if (btn != null && btn.Checked)
{
Response.Redirect(string.Format("get.aspx?a={0}&b={1}",
a.SelectedValue, b.SelectedValue));
}
}

And I have a Checkbox :

<asp:CheckBox ID="btn" runat="server" Checked="false" />

I am tryong to call that function btn_Click in jquery :

$(document).ready(function () {
if ($('#btn').is(':checked')) {
$(button).trigger("btn_Click");
}
});

But not worked!!!

Why? Thanks.

Jignesh Trivedi · Answer

hi As per my knowledge trigger is fired client side event not server side event. to call server side code please refer http://weblogs.asp.net/karan/archive/2010/09/12/calling-server-side-method-using-jquery-ajax.aspx hope this will help you.

Brijendra Gautam · Answer

Use a LinkButton in aspx page and then try this __doPostBack(' btn''');

Brijendra Gautam · Answer

@Jignesh: You can call the server side event using javascript. For testing right click on the LinkButton and then copy shortcut and paste it in notepad. You will see a javascript code that contains __doPostBack(' '''); If you check the html source of page in browser then you will be able to find the this function is called somewhere. So what I was suggesting is we can also call that event in our own JavaScript code by calling __doPostBack(' '''); And the advantage of calling like is we'll not lose the page context. If we call the server side code using Ajax and WebMethods then it is same like calling WebService code that is independent of page context. We can't access control's on page in that code.

Chevy Mark Sunderland · Answer

Thank you