C# 将字节数组附加到现有文件

问题描述

我想将一个字节数组附加到一个已经存在的文件 (C:\test.exe).假设有以下字节数组:

I would like to append a byte array to an already existing file (C:\test.exe). Assume the following byte array:

byte[] appendMe = new byte[ 1000 ] ;

File.AppendAllBytes(@"C:\test.exe", appendMe); // Something like this - Yes, I know this method does not really exist.

我会使用 File.WriteAllBytes 来做到这一点，但我将使用一个巨大的字节数组，并且不断抛出 System.MemoryOverload 异常.因此，我很可能不得不将大数组拆分为多个部分，并将每个字节数组附加到文件末尾.

I would do this using File.WriteAllBytes, but I am going to be using an ENORMOUS byte array, and System.MemoryOverload exception is constantly being thrown. So, I will most likely have to split the large array up into pieces and append each byte array to the end of the file.

谢谢，

埃文

推荐答案

一种方法是创建一个 FileStream 和 FileMode.Append 创建模式.

One way would be to create a FileStream with the FileMode.Append creation mode.

打开文件(如果存在)并寻找到文件末尾，或创建一个新文件.

这看起来像:

public static void AppendAllBytes(string path, byte[] bytes)
{
    //argument-checking here.

    using (var stream = new FileStream(path, FileMode.Append))
    {
        stream.Write(bytes, 0, bytes.Length);
    }
}

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