How to intialize C# variable with javascript variable value in MVC view page

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>i have

@
{
string Map = string.Empty;

}

var nonID = 1;
@Map=nonID
</script

<b>What I have tried:</b>

i have tried

<pre>i have

@
{
string Map = string.Empty;

}

<script>
var nonID = 1;
@Map=nonID
</script</pre>

but not working

Posted 13-Jul-17 1:54am

Member 12363094

Updated 13-Jul-17 5:14am

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F-ES Sitecore 13-Jul-17 8:44am

You have to remember that your .net code runs first (bits in "{ }" and after "@") which generates html that is then sent to the browser. So your js only exists and is executed after the server code runs, so you can't initialise a server-side variable based on javascript and the javascript doesn't execute until after the .net code has finished.

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Shmuel Zang · Answer 1 · 2017-07-13T05:14:00

As F-ES Sitecore wrote, the JavaScript code is run (in the client side when the browser shows the HTML document) only after the .NET code has been run (in the server side) and, an HTML document has been created from it. The JavaScript code isn't run when rendering the page in the server side (it just a text that is copied to the created HTML document). So it can't work by just writing a simple assignment (like you tried).

But, if you want a mechanism for changing a server's .NET objects values according to client's JavaScript objects values, you can try my WebBinding.