Question

我想使用filestream将文件从一个文件夹复制到另一个文件夹。如果我尝试使用file.copy，我试图使用另一个进程，以避免这个我想使用使用c＃的文件流。有人可以提供一个样本，用于将文件从一个文件夹复制到另一个文件夹。

Answer 1

复制我使用下面的代码： -

 public static void Copy(string inputFilePath, string outputFilePath)
    {
        int bufferSize = 1024 * 1024;

        using (FileStream fileStream = new FileStream(outputFilePath, FileMode.OpenOrCreate, FileAccess.Write,FileShare.ReadWrite))
        //using (FileStream fs = File.Open(<file-path>, FileMode.Open, FileAccess.Read, FileShare.Read))
        {
            FileStream fs = new FileStream(inputFilePath, FileMode.Open, FileAccess.ReadWrite);
            fileStream.SetLength(fs.Length);
            int bytesRead = -1;
            byte[] bytes = new byte[bufferSize];

            while ((bytesRead = fs.Read(bytes, 0, bufferSize)) > 0)
            {
                fileStream.Write(bytes, 0, bytesRead);
            }
        }
    }

Answer 2

    string fileName = "Mytest.txt";
    string sourcePath = @"C:\MyTestPath";
    string targetPath =  @"C:\MyTestTarget";
    string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
    string destFile = System.IO.Path.Combine(targetPath, fileName);

    {
        System.IO.Directory.CreateDirectory(targetPath);
    }

    // To copy a file to another location and 
    // overwrite the destination file if it already exists.
    System.IO.File.Copy(sourceFile, destFile, true);

如何使用filestream在c＃中复制文件

2 个答案: