asyncfileupload ajax control

I am using asyncfileupload ajax control and can successfully upload and save picture on server.

I need to do the following and not sure how:

1. 开发者_C百科When user is in process of uploading, I only want them to see *.jpg *.gif and *.bmp files

2. Once the user uploads their picture, how do I reduce the quality of the picture so it is less than 10 KB?

Env is VS 2008 C#

Thanks, Behrouz

See here for a perfect answer on scaling and covnerting images: High Quality Image Scaling Library

You will have to play with width/height and/or quality until you are below 10k.

René