c# - Best way to send image data to a server using WebClient -

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i'm using webclient try , send image i've got on winform application central server. i've never used webclient before , i'm pretty sure i'm doing wrong.

first of all, i'm storing , displaying image on form so: 

_screencap = new screencapture(); _screencap.onupdatestatus += _screen_caponupdatestatus; capturedimage = imjobj; imagepreview.image = capturedimage;

i've set event manager update imagepreview image when ever take screenshot. displaying when ever status changes this:

private void _screen_caponupdatestatus(object sender, progresseventargs e) {     imagepreview.image = e.capturedimage; }

with image i'm trying pass server so:

using (var wc = new webclient()) {     wc.uploaddata("http://filelocation.com/uploadimage.html", "post", imagepreview.image);  }

i know should convert image byte[] i've no idea how that. please point me in right direction of go doing properly?

you can convert byte[] this

public byte[] imagetobytearray(system.drawing.image imagein) {     memorystream ms = new memorystream();     imagein.save(ms,system.drawing.imaging.imageformat.gif);     return  ms.toarray(); }

if have path image, can this

 byte[] bytes = file.readallbytes("imagepath");

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