private void BTN_UploudImage_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog filedialog = new OpenFileDialog();
filedialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
filedialog.Filter = "All Files|*.*|JPEGs|*.jpg|Bitmaps|*.bmp";
filedialog.FilterIndex = 2;
if (filedialog.ShowDialog() == true)
{
BitMap = File.ReadAllBytes($@"{filedialog.FileName}");
PicturePath = filedialog.FileName;
ShowImage();
}
GroupControl_Logic.UpdateImg(groupId, BitMap);
}