如何在新标签页中打开pdf [英] How to open pdf in new tab

问题描述

我在gridview中有一个LinkBut​​ton。

我想在新标签中打开数据库中的pdf文件。

在我的代码中，pdf在同一个窗口中打开而不是在新的选项卡。



我的尝试：

I have a LinkButton in gridview.
I want to open pdf file from database in new tab.
In my code pdf is opening in same window not in new tab.

What I have tried:

<asp:TemplateField HeaderText="View File">
<ItemTemplate>
<asp:LinkButton ID="lbtnViewFile" runat="server"  CommandArgument='<%#System.Web.HttpUtility.HtmlEncode(Eval("AppCode") + "," + Eval("AttachmentCode") + "," + Eval("AttachmentCodeSerialNumber"))%>'                                                                    OnCommand="lbtnViewFile_Click">View</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>

protected void lbtnViewFile_Click(object sender, CommandEventArgs e)
  {
     LinkButton btn = (LinkButton)sender;
     string[] CommandArgument = btn.CommandArgument.Split(',');
     long lng_AppCode = Convert.ToInt32(CommandArgument[0]);
     int int_attachmentCode = Convert.ToInt32(CommandArgument[1]);
     int int_attachmentCodeSerialNumber = Convert.ToInt32(CommandArgument[2]);
    DownloadFiles(lng_AppCode,
                         int_attachmentCode, int_attachmentCodeSerialNumber);

  }

Private  int DownloadFiles(long lng_AppCode, int int_attachmentCode, int int_attachmentCodeSerialNumber)   
{
	try
        {
        	int intResult = 0;
            ABC obj_ABC = new ABC();
            A obj_A = 
              obj_ABC.DownloadFile(lng_AppCode, 
              int_attachmentCode, int_attachmentCodeSerialNumber);

            if (obj_A != null)
            {
                byte[] bytes = obj_A.AttachmentFile;
                HttpContext.Current.Response.Buffer = true;
                HttpContext.Current.Response.Charset = "";
                HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
                HttpContext.Current.Response.ContentType = obj_A.ContentType;

                HttpContext.Current.Response.BinaryWrite(bytes);
                if (obj_A.ContentType == "application/pdf")
                {
                    HttpContext.Current.Response.AddHeader("content-disposition", "inline;filename=" + "file_" + Convert.ToString(lng_AppCode) + "_" + Convert.ToString(int_attachmentCode) + "_" + Convert.ToString(int_attachmentCodeSerialNumber) + obj_A.FileExtension);
                  
                   

                  
                }
                else
                    HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=" + "file_" + Convert.ToString(lng_AppCode) + "_" + Convert.ToString(int_attachmentCode) + "_" + Convert.ToString(int_attachmentCodeSerialNumber) + obj_A.FileExtension);

                HttpContext.Current.Response.Flush();

                intResult = 1;
            }
            return intResult;
        }
        catch (Exception)
        {
            return 0;
        }

    }

推荐答案

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使用你的主题非常快速的搜索，因为大部分搜索词都给出了近百万次点击，包括这里和SO代码：在新标签页中打开来自数据库的pdf文件C＃ - Google搜索 [ ^ ]



将来，请尝试自己做至少基础研究，不要浪费你的时间或我们的时间。

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...

A very quick search using your subject as most of the search term gave nearly a million hits, including here and SO with code: open pdf file from database in new tab C# - Google Search[^]

In future, please try to do at least basic research yourself, and not waste your time or ours.

这篇关于如何在新标签页中打开pdf的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！