calling code behind c# function from javascript

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How to call c# (code behind )function from java script

C#

public void add()
{
int a=1;
int b = 3;
int c = a+b;
}

how to call it from java script

JavaScript

<script type="javascript">
// code here 
</script>

Posted 15-Jan-13 4:37am

Chandrakant Mane

Updated 15-Jan-13 5:54am

fjdiewornncalwe

v2

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David_Wimbley · Answer 1 · 2013-01-15T04:45:00

Can you give this a shot?

C#

$('#IdOfAButtonOrSomething').click(function()
{
	var dataToSend={Send1:'Value1',Send2:'Value2', Method:'Add' };

		var opts =
		{
			url: '<%=ResolveUrl("~/YourCodeBehindFile.aspx") %>',
			data: dataToSend,
			dataType: 'JSON',
			type: 'POST',
			success: function (response) {
				//Do something here if successful
			}
		}
		$.ajax(opts);
});

This would be in your code behind

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        if (Request.Form["Method"] == "Add")
        {
            add();
            return;
        }
    }
}

public void add()
{
    int a=1;
    int b = 3;
    int c = a+b;
}

P_Dash · Answer 2 · 2013-01-15T04:45:00

What I got from your question is that you want to call a Server side Method(s) from your JavaScript.

For this you need to use jQuery, which uses Ajax call to call a Method from Server side.

Refer the Following link & you will come to know how to Call a Server side method from your JavaScript.

Click Here

Read & get any doubt feel free to ask.

Nick Fisher (Consultant) · Answer 3 · 2013-01-15T05:27:00

An easy way is to have a hidden ASP button on your web page with the Click property pointed to your Code-behind function (in this case, add()), which you can then trigger with a simple Javascript call.

CSS:

CSS

<style type="text/css">
    .no-display
    {
    display:none;
    }
</style>

ASP:

ASP.NET

<asp:Button CssClass="no-display" ID="myBtn" runat="server" OnClick="add" useSubmitBehavior="false" />

Plain Javascript:

XML

document.getElementById('myBtn').click();

JQuery:

JavaScript

$("[id*='myBtn']").click();

Sandeep Mewara · Answer 4 · 2013-01-15T07:48:00

Solution 4

There are few ways to interact with server side through client side(Javascript):
1. XMLHttpRequest[^]
2. Callback[^]
3. WebService call[^]
4. PageMethod[^]

Try that you find fit.

Posted 15-Jan-13 7:48am

Sandeep Mewara

rizwan muhammed khan gouri · Answer 5 · 2013-01-18T22:15:00

Hello

Calling c# Function by jquery
you Need To create web method for c# function and Get using Ajax Request.

Use Following Link

http://dotnetguts.blogspot.in/2012/01/jquery-ajax-examples-by-calling-aspnet.html[^]

http://stackoverflow.com/questions/13282187/jquery-ajax-and-asp-net-webmethod[^]

http://stackoverflow.com/questions/7770679/jquery-ajax-call-to-an-asp-net-webmethod[^]

http://www.c-sharpcorner.com/UploadFile/abhikumarvatsa/calling-an-Asp-Net-C-Sharp-method-web-method-using-javascript/[^]

calling code behind c# function from javascript

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