Save and Retrieve images from Access Database (mdb file) in ASP.Net using C#

I have used following code to save image but it shows following error:

Code :

byte[] fileByte = null;
            string path = openFileDialog1.FileName;
            FileStream fs = new FileStream(path,FileMode.Open,FileAccess.Read);
            BinaryReader br = new BinaryReader(fs);
            long allbyte = new FileInfo(path).Length;
            fileByte = br.ReadByte((Int32)allbyte);
            fs.Close();
            fs.Dispose();
            br.Close();

Error :

Error 1 No overload for method 'ReadByte' takes '1' argument

please solve above problem and also provide the solution for reading image same as converted via above code