private void propertyGrid1_PropertyValueChanged(object s, PropertyValueChangedEventArgs e)
 {
     if (propertyGrid1.SelectedObject != null)
     {
         Texture tex = (Texture)propertyGrid1.SelectedObject;
         textureData.Text        = tex.Name;
         pictureBoxCustom1.Image = textureData.UpdateBitmap(new Bitmap(pictureBoxCustom1.Image));
     }
 }