C# 将大文件写入磁盘内存不足异常

我正在尝试写入然后读取一个大的随机文件来计算磁盘速度。我已经尝试了几种算法，但在尝试写入1GB文件时，总是会出现“出”或“内存”异常。这里有一些我试过的

方法1

   byte[] data = new byte[8192];
        Random rng = new Random();
        using (FileStream stream = File.OpenWrite(filePath))
        {
            for (int i = 0; i < fileSizeMb * 128; i++)
            {
                rng.NextBytes(data);
                stream.Write(data, 0, data.Length);
            }
        }

        byte[] data = new byte[8192];
        Random rng = new Random();
        using (FileStream stream = File.OpenWrite(filePath))
        {
            for (int i = 0; i < fileSizeMb * 128; i++)
            {
                rng.NextBytes(data);
                stream.Write(data, 0, data.Length);
                stream.Flush(); // BEETLE JUICE
            }
        }

方法1

   byte[] data = new byte[8192];
        Random rng = new Random();
        using (FileStream stream = File.OpenWrite(filePath))
        {
            for (int i = 0; i < fileSizeMb * 128; i++)
            {
                rng.NextBytes(data);
                stream.Write(data, 0, data.Length);
            }
        }

        byte[] data = new byte[8192];
        Random rng = new Random();
        using (FileStream stream = File.OpenWrite(filePath))
        {
            for (int i = 0; i < fileSizeMb * 128; i++)
            {
                rng.NextBytes(data);
                stream.Write(data, 0, data.Length);
                stream.Flush(); // BEETLE JUICE
            }
        }

byte[]data=新字节[8192]；
随机rng=新随机（）；
使用（FileStream-stream=File.OpenWrite（filePath））
{
对于（int i=0；i

方法2

const int blockSize = 1024 * 8;
            const int blocksPerMb = (1024 * 1024) / blockSize;

            int count = fileSizeMb * blocksPerMb;

            byte[] data = new byte[blockSize];
            Random rng = new Random();
            //using (FileStream stream = File.OpenWrite(filePath))
            using (StreamWriter sw1 = new StreamWriter(filePath))
            {
                // There 
                for (int i = 0; i < count; i++)
                {
                    rng.NextBytes(data);
                    sw1.BaseStream.Write(data, 0, data.Length);
                    //stream.Write(data, 0, data.Length);

                }
            }

        const int blockSize = 1024 * 8;
        const int blocksPerMb = (1024 * 1024) / blockSize;

        int count = fileSizeMb * blocksPerMb;

        byte[] data = new byte[blockSize];
        Random rng = new Random();
        using (StreamWriter sw1 = new StreamWriter(filePath))
        {
            // There 
            for (int i = 0; i < count; i++)
            {
                rng.NextBytes(data);
                sw1.BaseStream.Write(data, 0, data.Length);
                sw1.baseStream.Flush(); // BEETLE JUICE
            }
        }

const int blockSize=1024*8；
常量int blocksPerMb=（1024*1024）/blockSize；
int count=fileSizeMb*blockspemb；
字节[]数据=新字节[块大小]；
随机rng=新随机（）；
使用（StreamWriter sw1=新StreamWriter（文件路径））
{
//那里
for（int i=0；i

阅读

---

不要将整个文件读入内存，只需一次读取4096字节。位于

的示例代码您确定在阅读时没有从内存异常中获取吗？顺便说一句，

StreamReader/Writer

用于读取/写入文本数据，对于二进制数据，只需使用

Stream

。