/// <summary>
 /// 获取控件,用于添加展示
 /// </summary>
 /// <returns></returns>
 System.Windows.Forms.Control IPreviewPdf.GetControl()
 {
     if (this.pdfViewer1 == null)
     {
         this.pdfViewer1 = new Foxit.PDF.Viewer.PdfViewer();
         this.pdfViewer1.ShowNavigationPanel = false;
     }
     return(this.pdfViewer1);
 }
 public void Dispose()
 {
     this.pdfViewer1 = null;
 }