How to use C# code in jquery if statement?

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In the following code, the c # command, which if statement returns the result true and which returns false, works. But I bet in the jquery commands that if the if condition is not met, the c # command will work

<script type="text/javascript">
    $(document).ready(function () {

        var a = 1;
        if (a == 1)
        {
            alert('1111111111111');
        }

        else
        {           
            alert('2222222');

             @{
             //c# code                 
              Model.Session.SetString("aaaa", "rezajj");
            } 
        }

})
</script>

What I have tried:

Please help me to run the C # command only inside the else{} block

Posted 20-Nov-20 23:18pm

Reza kavian

Updated 21-Nov-20 8:41am

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F-ES Sitecore 21-Nov-20 14:44pm

c# code runs on the server when the page is being rendered and the results of that rendering are sent to the browser to be processed, at which point your js now runs. So you can't run c# in the browser. The solution depends on what the code does, it might need an ajax call to the server to do some work, or if it needs server-side data you could maybe create js variables with that data in them.

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Dave Kreskowiak · Answer 1 · 2020-11-21T08:41:00

Solution 1

You can't. C# code runs entirely and only on the server, never the client.

Javascript code runs only on the client.

The C# code is executed while the page is being generated, before it's sent to the client browser.

You would have to redesign your code with this in mind.

Posted 21-Nov-20 8:41am

Dave Kreskowiak