Question

Hello i need to send some data back to the server and i want to use the following code.

Does someone know if there is a limit on the dimension of the string sent with the following code

This is my js code:

 $(document).ready(function() {

          $.ajax({
              type: "POST",
              url: "test.aspx/PassBackdata",
              contentType: "application/json; charset=utf-8",
              data: "{'args': '" + Ldata + "'}",
                   dataType: "json",
                   success: AjaxSucceeded,
                   error: AjaxFailed
               });
           });


      };

Answer 1

Since you are using POST the data you are sending to the server could be arbitrarily large and is controlled by the <httRuntime> element in your web.config:

<!-- Limit the request size to 4MB -->    
<httpRuntime maxRequestLength="4096" />

and if you host in IIS7+ you should also use the <requestLimits> tag:

<system.webServer>
    <security>
        <requestFiltering>
            <!-- Limit the request size to 4MB -->    
            <requestLimits maxAllowedContentLength="4194304" />
        </requestFiltering>
    </security>
</system.webServer>

Also I would recommend you using the JSON.stringify method to ensure that the data is properly encoded:

$.ajax({
    type: "POST",
    url: "test.aspx/PassBackdata",
    contentType: "application/json; charset=utf-8",
    data: JSON.stringify({ args: Ldata }),
    dataType: "json",
    success: AjaxSucceeded,
    error: AjaxFailed
});