i trying to update my photo but i failed

Rohan, were you able to upload your profile photo? Let us know.

That depends on what you actually tried to do? What kind of file you selected, was connection established or disconnected and so on. 


Go to this webpage: http://www.c-sharpcorner.com/Authors/AuthorRegistration.aspx, and Edit your profile picture. Select the file to upload and you're done...