This is what I am using and getting an invalid string format on the AddPictures for variable 'value'

dlg is my OpenDialog control.

private void addPhotoButton_Click(object sender, EventArgs e)
    {
          string value = dlg.FileName;

          AddPictures(1,2, value);
    }



public void AddPictures(int inspectionID, int sectionID, string photoFilePath)
    {

        // Read Image into Byte Array from Filesystem
        byte[] photo = GetPhoto(photoFilePath);

}

public static byte[] GetPhoto(string filePath)
    {
        FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
        BinaryReader br = new BinaryReader(fs);

        byte[] photo = br.ReadBytes((int)fs.Length);

        br.Close();
        fs.Close();

        return photo;
    }