vb.net 使用 ASP.NET 二进制写入新选项卡/窗口
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Binary Write using ASP.NET into a new tab / window
提问by Hyman
I am using VB.NET to write a pdf file directly to the browser, which opens it right away replacing the content in a current window. I am trying to do is set a parameter which will cause binarywrite in a new tab / window.
我正在使用 VB.NET 将 pdf 文件直接写入浏览器，浏览器会立即打开它以替换当前窗口中的内容。我想做的是设置一个参数，该参数将导致在新选项卡/窗口中进行二进制写入。
' Set the appropriate ContentType.
Response.ContentType = "Application/pdf"
' Write file directly to browser.
Response.BinaryWrite(binaryData)
Response.End()
There is has to be something that I can set which will cause this to write binary PDF in a new window. Like Response.Target = "_blank" ?????
必须有一些我可以设置的东西，这将导致它在新窗口中写入二进制 PDF。像 Response.Target = "_blank" ?????
回答by Hyman
First, create an additional page named "PDF.aspx" or whatever you would like it called.
首先，创建一个名为“PDF.aspx”的附加页面或您希望它调用的任何名称。
Second, in your page, store your "binarydata" variable in a session.
其次，在您的页面中，将您的“binarydata”变量存储在会话中。
Session("binaryData") = binarydata
And tell it to go to your new page.
并告诉它转到您的新页面。
Response.Redirect("PDF.aspx")
Third, go to your PDF.aspx code behind page and put the following:
第三，转到您的 PDF.aspx 代码隐藏页面并输入以下内容：
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Try
Response.ContentType = "Application/pdf"
Response.BinaryWrite(Session("binaryData"))
Response.End()
Catch ex As Exception
Throw ex
End Try
End Sub
That should produce the result you want. :)
那应该会产生你想要的结果。:)
回答by mason
How about an alternative? Write to the browser some client side script to open a new window/tab.
替代方案怎么样？向浏览器写入一些客户端脚本以打开一个新窗口/选项卡。
ClientScript.RegisterStartupScript(this.GetType(), "scriptkey", "window.open('MyPDFDisplayer.ashx');");
Then create a new generic handlerMyPDFDisplayer.ashx that writes the PDF to the window.
然后创建一个新的通用处理程序MyPDFDisplayer.ashx 将 PDF 写入窗口。
context.Response.ContentType = "application/pdf";
context.Response.BinaryWrite(binaryData);
context.Response.End();
I'm a C# guy, so you'll have to translate but it should be pretty easy.
我是一个 C# 人，所以你必须翻译，但它应该很容易。
回答by Bonez024
I know this is old but here's what I had done to achieve the OP was after. (Forgive me as this is C# but it shouldn't be too hard to convert it)
我知道这已经过时了，但这是我为实现 OP 所做的工作。（请原谅我，因为这是 C#，但转换它应该不会太难）
This is the original code that I had used that displayed the same behavior that you have described!
这是我使用的原始代码，它显示了您所描述的相同行为！
Response.ClearContent();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "inline; filename=" + docName);
Response.AddHeader("Content-Length", byteArray.Length.ToString());
Response.BinaryWrite(byteArray);
Response.End();
There are two key changes that I had to make to get this to work the way I wanted (Download the file as PDF, then open in a new tab when the user had clicked on that attachment.)and they are both on line 3 of the code above.
我必须进行两个关键更改才能使其按我想要的方式工作（将文件下载为 PDF，然后在用户单击该附件时在新选项卡中打开。）它们都位于第 3 行上面的代码。
Change this
改变这个
Response.AddHeader("Content-Disposition", "inline; filename=" + docName);
To this
对此
Response.AddHeader("Content-Disposition", "attachment; filename=" + docName + ".pdf");
If you specify the Content-Disposition as "Inline"it will output the file content in your current window.
如果您将 Content-Disposition 指定为“内联”，它将在当前窗口中输出文件内容。
You need to change that disposition to "attachment"AND make sure your extension suffix is explicitly set to .pdf.
您需要将该配置更改为“附件”，并确保您的扩展后缀明确设置为 .pdf。
