如何在 ASP.NET MVC 中创建文件并通过 FileResult 返回它? [英] How to create file and return it via FileResult in ASP.NET MVC?

问题描述

我必须在我的应用程序 ASP.net MVC 应用程序中创建并返回文件.文件类型应该是普通的 .txt 文件.我知道我可以返回 FileResult 但我不知道如何使用它.

I have to create and return file in my aplication ASP.net MVC aplication. The file type should be normal .txt file. I know that i can return FileResult but i don't know how to use it.

public FilePathResult GetFile()
{
string name = "me.txt";

FileInfo info = new FileInfo(name);
if (!info.Exists)
{
    using (StreamWriter writer = info.CreateText())
    {
        writer.WriteLine("Hello, I am a new text file");

    }
}

return File(name, "text/plain");
}

此代码不起作用.为什么?流结果怎么做?

This code doesn't work. Why? How to do it with stream result?

推荐答案

EDIT(如果你想要流试试这个:)

public FileStreamResult GetFile()
{
    string name = "me.txt";

    FileInfo info = new FileInfo(name);
    if (!info.Exists)
    {
        using (StreamWriter writer = info.CreateText())
        {
            writer.WriteLine("Hello, I am a new text file");

        }
    }

    return File(info.OpenRead(), "text/plain");

}

你可以试试这样的..

You could try something like this..

public FilePathResult GetFile()
{
    string name = "me.txt";

    FileInfo info = new FileInfo(name);
    if (!info.Exists)
    {
        using (StreamWriter writer = info.CreateText())
        {
            writer.WriteLine("Hello, I am a new text file");

        }
    }

    return File(name, "text/plain");

}

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