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Editorial Team
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Asked: 2026-05-27T08:19:58+00:00

net/C# application I have a Link button: <asp:LinkButton runat=server ID=LinkButton1/> When the user clicks

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net/C# application I have a Link button:

<asp:LinkButton runat="server" ID="LinkButton1"/>

When the user clicks this button I want to execute this javascript function:

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

And change a Session variable:

Session["ID"] = 2;

The problem is that the session variable can only be changed in the code behind.

How can I execute both when the link button is clicked?

Thanks in advance

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1 Answer

  1. Editorial Team

    Changing a value server side requires either a full post of the page or an ajax call.

    So you could add a HiddenField and set its value to 2 client side, and then in your server side button handler use that value to set the session variable.

    Or you could do an ajax call to a web service.

    As far a performing client and server side operations on the same click event, you can do the following. Add a server side Click handler as usual, then register a client side event with ClientScriptManager.RegisterOnSubmitStatement. Here’s the example from MSDN:

    <%@ Page Language="C#"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  public void Page_Load(Object sender, EventArgs e)
  {
    // Define the name and type of the client script on the page.
    String csname = "OnSubmitScript";
    Type cstype = this.GetType();

    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Check to see if the OnSubmit statement is already registered.
    if (!cs.IsOnSubmitStatementRegistered(cstype, csname))
    {
      String cstext = "document.write('Text from OnSubmit statement');";
      cs.RegisterOnSubmitStatement(cstype, csname, cstext);
    }

  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ClientScriptManager Example</title>
  </head>
  <body>
     <form    id="Form1"
            runat="server">
     <input type="submit"
            value="Submit" />
     </form>
  </body>
</html>
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