C# 将字节数组附加到现有文件 [英] C# Append byte array to existing file

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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 FileStreamFileMode.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.

Opens the file if it exists and seeks to the end of the file, or creates a new file.

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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