Press save button but no action is taken.

Question

i have done below code to convert image control image into binary (IMAGE1.ImageUrl) but when i press save button their is no effect and not response from page. means page not react anything its not save record and display any error. 

i have use (!IsPostBack)  property what to do...?

string filepath = Server.MapPath(vImage.ImageUrl);
FileStream fs = new FileStream(vImage.ImageUrl, FileMode.Open, FileAccess.ReadWrite);
BinaryReader br = new BinaryReader(fs);
byte[] bytes = br.ReadBytes((Int32)fs.Length);
br.Close();
fs.Close();