Version: 2022.3
  • C#


Suggest a change


Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.


Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.




public void AddBinaryData(string fieldName, byte[] contents, string fileName = null, string mimeType = null);


Add binary data to the form.

Use this function to upload files and images to a web server application. Note that the data is read from the contents of byte array and not from a file. The fileName parameter is for telling the server what filename to use when saving the uploaded file.

If mimeType is not given and first 8 bytes of the data match PNG format header, then the data is sent with "image/png" mimetype. Otherwise it is sent with "application/octet-stream" mimetype.