如何在 C# 中将流保存到文件中?

How do I save a stream to a file in C#?(如何在 C# 中将流保存到文件中?)

问题描述

我有一个用流初始化的 StreamReader 对象，现在我想将此流保存到磁盘(流可能是 .gif 或 .jpg 或 .pdf).

I have a StreamReader object that I initialized with a stream, now I want to save this stream to disk (the stream may be a .gif or .jpg or .pdf).

现有代码:

StreamReader sr = new StreamReader(myOtherObject.InputStream);

1. 我需要将它保存到磁盘(我有文件名).
2. 将来我可能希望将其存储到 SQL Server.

我也有编码类型，如果我将它存储到 SQL Server，我将需要它，对吗?

I have the encoding type also, which I will need if I store it to SQL Server, correct?

推荐答案

正如 Tilendor 在 Jon Skeet 的回答中强调的那样，从 .NET 4 开始，流就有一个 CopyTo 方法.

As highlighted by Tilendor in Jon Skeet's answer, streams have a CopyTo method since .NET 4.

var fileStream = File.Create("C:\Path\To\File");
myOtherObject.InputStream.Seek(0, SeekOrigin.Begin);
myOtherObject.InputStream.CopyTo(fileStream);
fileStream.Close();

或者使用 using 语法:

using (var fileStream = File.Create("C:\Path\To\File"))
{
    myOtherObject.InputStream.Seek(0, SeekOrigin.Begin);
    myOtherObject.InputStream.CopyTo(fileStream);
}

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