如果需要单独显示PDF文件时用下面代码去实现，指定url地址。

地址：

、    获取附件管理的实体对象：

List<KeyValuePair<string, object>> paramters = new List<KeyValuePair<string, object>>();

paramters.Add(new KeyValuePair<string, object>(BaseAttachmentsEntity.FieldBusinessID,this.BusinessID));

paramters.Add(new KeyValuePair<string, object>(BaseAttachmentsEntity.FieldBusinessModule, this.BusinessModule));

paramters.Add(new KeyValuePair<string, object>(BaseAttachmentsEntity.FieldAttachmentType, this.AttachmentType));

this.DTData = SNFService.Instance.BaseAttachmentsService.GetDataTableByValues(BaseSystemInfo.UserInfo, paramters);

.最配置文件里的下载地址

UownloadAddressUrl = SNFService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "FTP", "DownloadAddressUrl");

.从附件表获取所在的服务器名称,并组成url地址

string url = UownloadAddressUrl +

            item.SubItems[BaseAttachmentsEntity.FieldServerName].Text;

.把url地址放到下面进行获取文件流。

try

{

　　System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url);

　　System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();

　　long totalBytes = myrp.ContentLength;

　　System.IO.Stream st = myrp.GetResponseStream();

　　FrmPDFViewer view = new FrmPDFViewer();

　　view.FileStream = st;

　　view.ShowDialog();

　　st.Close();

}

catch (System.Exception)

{

}

、获取完文件流后，进行显示文件。

　　pdfViewer1.Document = new PdfDocument(FileStream);

SNF开发平台WinForm之十四-站内发送系统信息http://www.cnblogs.com/spring_wang/p/6140031.html

SNF开发平台WinForm之十三-单独从服务器上获取PDF文件进行显示http://www.cnblogs.com/spring_wang/p/6140025.html

SNF开发平台WinForm之十二-发送手机短信功能调用http://www.cnblogs.com/spring_wang/p/6139829.html

SNF开发平台WinForm之十一-程序打包http://www.cnblogs.com/spring_wang/p/6139827.html

SNF开发平台WinForm之十-Excel导入http://www.cnblogs.com/spring_wang/p/6128604.html

SNF开发平台WinForm之九-代码生成器使用说明http://www.cnblogs.com/spring_wang/p/6128595.html

SNF开发平台WinForm之八-自动升级程序部署使用说明http://www.cnblogs.com/spring_wang/p/6128570.html

SNF开发平台WinForm之七-单据打印和使用说明http://www.cnblogs.com/spring_wang/p/6126016.html

SNF开发平台WinForm之六-上传下载组件使用http://www.cnblogs.com/spring_wang/p/6125929.html

Winform开发框架之通用Windows摄像头调用拍照http://www.cnblogs.com/spring_wang/p/6008674.html