Question

我有这个代码，想法是从文件中读取并删除文件。

                StreamReader sr = new StreamReader(path);

                s = sr.ReadLine();
                if ((s != null))
                {
                 sr.ReadLine();
                  do
                   {
                   // I start to read and get the characters

                   }while (!(sr.EndOfStream));
                 }
                 sr.close();

然后关闭streamReader后，我尝试删除该文件，但我不能：

“进程无法访问该文件，因为它正由另一个进程使用”

我该怎么办？

Answer 1

在将代码括在using语句中后尝试删除，如下所示：

using(  StreamReader sr = new StreamReader(path) ) 
{ 
    ...
}

如果这也不起作用，则其他一些进程已锁定您的文件。

Answer 2

你为什么不使用这样的东西

using (StreamReader sr= new StreamReader(your Path here))
{
    // do your stuff
}

Answer 3

要逐行读取文件，请尝试以下操作：

using (var reader = new StreamReader(path))
{
    string line;
    while ((line = reader.ReadLine()) != null)
    {
        // do something with the line that was just read from the file
    }
}

// At this stage you can safely delete the file
File.Delete(path);

或者如果文件很小，你甚至可以加载内存中的所有行：

string[] lines = File.ReadAllLines(path);
// Do something with the lines that were read
...
// At this stage you can safely delete the file
File.Delete(path);

无法删除文件“进程无法访问文件”

3 个答案: