like climbing a imag Image Control FileUpload1

Forum friends good afternoon if I can orient
I need to validate the files that are only images How you could display the image before recording it in the database?
This is my code to record images
Protected Sub btnGrabar_Click (sender As Object, e As EventArgs) Handles btnagregarimagen.Click                   Dim data As New vsolicitud          Insert Dim As New Fsolicitud          'Assign the image          Then if FileUpload1.HasFile              Using reader As New BinaryReader (FileUpload1.PostedFile.InputStream)                  Dim image As Byte () = reader.ReadByt ...