The Export() method of the IImageProvider you use to export the image from the RadImageEditor will return the byte array which you can use to upload the image on the server later.
For example, if you have an application with RadImageEditorUI in it, named "ImageEditorUI" and the image is with "png" extenstion, the following code block can be used to get the necessary byte:
PngFormatProvider provider =
 bytes = provider.Export(
After you get the byte, you can pass it to the appropriate service which will be responsible to upload the image on the server. You can read how to make such a service in this blog post
More about Import/Export features of RadImageEditor, you can read in our very descriptive help article
If you have further questions, please do not hesitate to contact us again.
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