validate settlement record c#

i'm loading an settlement file, i wish know countenance settlement before entirely review file.

string filepath = "image.jpg";
image newimage = image.fromfile(filepath);

the problem occurs image.jpg isn't unequivocally jpg. example, i emanate an lifeless calm record rename image.jpg, an outofmemory difference thrown image.jpg loaded.

i'm looking duty countenance an settlement given tide record route image.

example duty prototype

bool isvalidimage(string filename);
bool isvalidimage(stream imagestream);