在 File.Create 之后关闭文件 [英] Closing a file after File.Create

问题描述

我用

if(!File.Exists(myPath))
{
    File.Create(myPath);
}

但是，当我使用这个新创建的文件创建一个 StreamReader 时，我收到一个错误提示

However, when I go to create a StreamReader with this newly created file, I get an error saying that

进程无法访问文件[我的文件路径]"，因为它正被另一个进程使用.

The process cannot access the file '[my file path here]' because it is being used by another process.

没有我可以调用的 File.Close(myPath) 以便在创建后关闭它，那么我如何释放此资源以便稍后在我的程序?

There isn't a File.Close(myPath) that I can call so that it is closed after being created, so how do I free this resource so that I can open it later in my program?

推荐答案

File.Create(string) 返回 FileStream<的一个实例/code> 类.您可以调用 Stream.Close() 方法以关闭它并释放它正在使用的资源:

File.Create(string) returns an instance of the FileStream class. You can call the Stream.Close() method on this object in order to close it and release resources that it's using:

var myFile = File.Create(myPath);
myFile.Close();

但是，由于 FileStream 实现了 IDisposable，您可以利用 using 声明(通常是处理此类情况的首选方式).这将确保流在完成后关闭并正确处理:

However, since FileStream implements IDisposable, you can take advantage of the using statement (generally the preferred way of handling a situation like this). This will ensure that the stream is closed and disposed of properly when you're done with it:

using (var myFile = File.Create(myPath))
{
   // interact with myFile here, it will be disposed automatically
}

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