private void OnPriviewClick(object sender, EventArgs e)
 {
     try
     {
         string imageURL = string.Format("{0}/{1}/{2}",
               ApplicationConfig.AttachmentPath, AttachmentPath, _ImageURL);
         PictureExplorer explorer = new PictureExplorer(imageURL);
         explorer.ShowDialog();
     }
     catch (Exception ex)
     {
         MessageBoxEx.Error(ex);
     }
 }
 private void OnPriviewClick(object sender, System.EventArgs e)
 {
     try
     {
         PictureExplorer explorer = new PictureExplorer(this.Image);
         explorer.ShowDialog();
     }
     catch (Exception ex)
     {
         MessageBoxEx.Error(ex);
     }
 }