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How to call a C# code behind method from a Java Script function RSS

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Last post Oct 26, 2012 11:13 AM by altafpatel

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brgdotnet

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How to call a C# code behind method from a Java Script function

Apr 24, 2009 03:21 AM|LINK

Is their a way to call a C# code behind method from a Java Script function? Can someone show me how to do it?

Example:

<html>
<head>
<script type="text/javascript">
function displaymessage()
{
// In this function call a C# method named DisplayInformation();

}
</script>
</head>

in C# :

void DisplayInformation(void){

// Do something in this C# method

}
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qwe123kids

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 04:28 AM|LINK

Hi,
U can call Session or Control in javscript
in follwing way..

'<%=Session["MyName"]%>'
'<%=Label1.text%>'
just Try
//Inline code
public string Mynamestring()
{
string strName = "";
return strName = "avinash";
}
//Method calle in javascript

'<%=Mynamestring()%>'
Hop it help

Thanks
Avinash Tiwari

Remember to click “Mark as Answer” on the post, if it helps you.
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esayas

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 04:33 AM|LINK
Options...
1. Use a HiddenField control and set its value using javascript fuction and check its value on post back to trigger a C# method. You can use the ClientID property of the control class to find the control in your javascript code..
2. Use window.location method in you javascript and pass a some parameters and inovke your methods by checking for those in your c# code behind..
- Edited by esayas on Apr 24, 2009 04:40 AM
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Ram Reddy Me...

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 04:43 AM|LINK

What actually you want to do in that method.

If the method you are saying is a server side event of a control, you can not call a server side event from client side using java script.

Regards,
Abhiram Reddy Mekha
.
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khushi_nayak

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124 Posts

Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 05:00 AM|LINK

Hi,

Make the method that you want to access client side as public and then get method at client side as:

<%=MethodName()%>

Thanks,

Khushboo Nayak

Please Mark as Answered if this helps you.
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Haris Alim

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568 Points

131 Posts
Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 05:04 AM|LINK
You can use page method approach to call C# methods from javascript.

check this link
```
http://www.singingeels.com/Articles/Using_Page_Methods_in_ASPNET_AJAX.aspx
```
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dpkngm

Member

154 Points

47 Posts

Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 05:26 AM|LINK

Hi there, you can do it using pagemeathod. Go through the following url for full description.

http://www.dotnetcurry.com/ShowArticle.aspx?ID=109&AspxAutoDetectCookieSupport=1

Deepak Nigam
deepak.nigam@swiftcybernetics.com
http://www.swiftcybernetics.com

please mark as answer if it helps u.
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Coool

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 05:36 AM|LINK

Hi brgdotnet,

Very first thing is if you want to call server side function using server tag inside javascript then it's not possible. You must eigher call Web Service method or page using AJAX call.

Please mark as Answer if it helps u. Thanks!

Parth Patel
Software Engineer
- Marked as answer by Gary yang - MSFT on Apr 29, 2009 02:37 AM

BryianTan

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 06:24 AM|LINK

hello,

you can try something like this

.aspx

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript" language="javascript">
        function TestCodeBehind()
        {
            document.getElementById('<%= Label1.ClientID %>').innerHTML = '<%= CodeBehind() %>';
           return false;
        }
        

         function TestCodeBehind2()
        {
            document.getElementById('<%= Button2.ClientID %>').click();
          //  return false;
        }


</script>


</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input id="Button1" type="button" value="Sample One" onclick="javascript:TestCodeBehind()" />
        <input id="Button3" type="button" value="Sample two" onclick="javascript:TestCodeBehind2()" />
        <asp:Button ID="Button2" runat="server" Text="" OnClick="ClickedME"  />
        <asp:Label ID="Label1" runat="server" Text=""></asp:Label>
    </div>
    </form>
</body>
</html>

.aspx.cs 
 protected void Page_Load(object sender, EventArgs e)
    {
        Button2.Attributes.Add("style", "visibility :hidden"); 
    }

    protected string CodeBehind()
    {
        return "this is a string from C# code behind " + DateTime.Now.ToString();
    }
    protected void ClickedME(object sender, EventArgs e)
    {
        Label1.Text = "You clicked this button on " + DateTime.Now.ToString();
    }

Bryian Tan
MCP, MCAD, MCTS
My blog...

Marked as answer by Gary yang - MSFT on Apr 29, 2009 02:37 AM

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sumitd

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Re: How to call a C# code behind method from a Java Script function

Apr 24, 2009 06:39 AM|LINK

Create a button like below in aspx page.

<asp:Button ID="Button1" runat="server" OnClientClick="CallCodeBehind" Text="Upload" />

Add below javascript in aspx page:

<script type = "text/javascript">
function CallCodeBehind()
{
var a = '<%=CallFromJS()%>';
}

</script>

Put the below method in codebehind
public string CallFromJS()
{
string str = "testing";
return null;

}

Please mark it as answer if it resolves the issue.

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brgdotnet

How to call a C# code behind method from a Java Script function

qwe123kids

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esayas

Re: How to call a C# code behind method from a Java Script function

Ram Reddy Me...

Re: How to call a C# code behind method from a Java Script function

khushi_nayak

Re: How to call a C# code behind method from a Java Script function

Haris Alim

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dpkngm

Re: How to call a C# code behind method from a Java Script function

Coool

Re: How to call a C# code behind method from a Java Script function

BryianTan

Re: How to call a C# code behind method from a Java Script function

sumitd

Re: How to call a C# code behind method from a Java Script function

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