javascript 如何显示打开/保存对话框 asp net mvc 4
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How to display open/save dialog asp net mvc 4
提问by Guilherme Longo
I am able to request a file and also have it returned. I don′t know how to display a open/save dialog box.
我可以请求一个文件并返回它。我不知道如何显示打开/保存对话框。
View:
看法：
function saveDocument() {
$.ajax({
url: '/Operacao/saveDocument',
type: 'POST',
DataType: "html",
success: function (data) {
//I get the file content here
}
});
}
Controller:
控制器：
public void saveDocument() {
Response.ContentType = "image/jpeg";
Response.AppendHeader("Content-Disposition", "attachment; filename=SailBig.jpg");
Response.TransmitFile(Server.MapPath("~/MyPDFs/Pdf1.pdf"));
Response.End();
}
回答by Felipe Oriani
I think you cannot download a file in a browser async, just redirect the user to the action and the browser will open a save dialog window. In asp.net mvc you could have an action method to download a file resulting in a FileResultwith the Filemethod of the base controller.
我认为您不能在浏览器中异步下载文件，只需将用户重定向到操作，浏览器就会打开一个保存对话框窗口。在 asp.net mvc 中，您可以有一个操作方法来下载文件，从而FileResult使用File基本控制器的方法。
public ActionResult SaveDocument()
{
string filePath = Server.MapPath("~/MyPDFs/Pdf1.pdf");
string contentType = "application/pdf";
//Parameters to file are
//1. The File Path on the File Server
//2. The content type MIME type
//3. The parameter for the file save by the browser
return File(filePath, contentType, "Report.pdf");
}
回答by Zaphod
One way to force firefox (doen't work for chrome) to open the save dialogue is to set the contenttype to "application/octet-stream" and give it a filename with the correct extension.
强制 firefox（不适用于 chrome）打开保存对话框的一种方法是将内容类型设置为“application/octet-stream”并为其指定一个具有正确扩展名的文件名。
public ActionResult SaveDocument()
{
string filePath = Server.MapPath("~/MyPDFs/Pdf1.pdf");
string contentType = "application/octet-stream"; //<---- This is the magic
//Parameters to file are
//1. The File Path on the File Server
//2. The content type MIME type
//3. The parameter for the file save by the browser
return File(filePath, contentType, "Report.pdf");
}
