在asp.net中显示PDF的方法：
一、直接显示,使用的还是原页面的URL
Response.ContentType = "application/pdf";
Response.Clear();
Response.TransmitFile(@"SharePoint.pdf");
Response.End();
二、以PDF文件做为URL进行显示
Response.Redirect("Sharepoint.pdf");
三、点击进行下载
Response.ClearHeaders();
Response.ContentType = "application/pdf";
Response.Clear();
Response.AppendHeader("Content-Disposition", "attachment;Filename=SharePoint.pdf");
Response.TransmitFile(@"SharePoint.pdf");
Response.End();