Unable to upload file using c# WebClient and php FILES

Question

The following C# code is used to upload the json file (~3.6 MB) to the server. Here, I am using WebClient to upload file to the server.

 private void btnUploadToServer_Click(object sender, EventArgs e)
        {
            try
            {
                using (WebClient client = new WebClient())
                {
                    string filePath = @"C:\Users\SAKTHY-PC\Desktop\app_erp_suneka.json";
                    var serverPath = new Uri(@"http://example.com/newSync/upload.php");
                    client.UploadFile(myUri,filePath);
                }

                   Application.Exit();
            }
            catch (Exception err)
            {
                MessageBox.Show(err.Message);
            }
        }

And I have a php script file (upload.php) in the following folder http://example.com/newSync/

<?php
    $filepath = $_FILES["file"]["tmp_name"];
    move_uploaded_file($filepath,"app_erp_suneka.json");
?>

The problem is unable to upload 2MB or more than 2MB file to the server. But less than 2MB file is successfully uploaded.

What's the error message when uploading a file that is bigger than 2MB? — M.B.
– M.B., Commented Jun 21, 2018 at 6:13
No error messages in C# and no log file in server also. When I click the upload button, bit time after the Application closes. — S.Sakthybaalan
– S.Sakthybaalan, Commented Jun 21, 2018 at 6:17
Try setting the Application.Exit(); after the try/catch block. — M.B.
– M.B., Commented Jun 21, 2018 at 6:25
I put as you suggested but the program works some time as busy then closes. No error messages. — S.Sakthybaalan
– S.Sakthybaalan, Commented Jun 21, 2018 at 6:34

Mikhail Kulygin · Accepted Answer · 2018-06-21 06:40:13Z

1

You need to check and increase theese variables on your PHP server (php.ini file):

post_max_size => 8M
upload_max_filesize => 2M

Check it in phpinfo() or in server console:

php --info | grep upload_max_filesize
php --info | grep post_max_size
php --info | grep php.ini <-- shows where php.ini is

And control your php-log -- all errors and warnings are shown here:

php --info | grep error_log <-- where error_log is

answered Jun 21, 2018 at 6:40

Mikhail Kulygin

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1 Comment

S.Sakthybaalan Over a year ago

Thank you so much. I only change the upload_max_filesize => from 2M to 16M. Now it works perfectly.

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