No, you cannot, at least, not right now. "I want to create image editor in asp.net" and "I am looking for open source image editor control" clearly contradict. After you find and use such control, you cannot consider yourself as an author of the editor.
See also my comment to the question. Who on Earth could be interested in such thing in practice?
Of course, you can find something: http://bit.ly/10TaSD0
As you can see, commercial products are available, but I would not be so enthusiastic about open source.
This is explainable. This is because this topic is not really interesting. Why editing anything online? Of course, some part of commercial sector gladly use any opportunity to make some money on loosers wanting something "cool", but serious open source developers usually pay more attention for more reasonable problems. That's why multi-platform open-source editors are so good these days — there is a serious demand for them, and enough skills in really good developers…