复制字节时出错 - 偏移量和长度超出范围。

Question

我正在尝试将二维数组值转换为 byte[] 并返回到原始二维数组。运行我的代码时出现此错误：

An unhandled exception of type 'System.ArgumentException' occurred in TestProject.exe.

Additional information: Offset and length were out of bounds 
for the array or count is greater than the number of elements from the 
index to the end of the source collection.

这是我的代码：

    byte[,] dataArray = new byte[,] {
        {4, 6, 2},
        {0, 2, 0},
        {1, 3, 4}
    };

    for (int j = 0; j < 3; j++)
    {
        for (int i = 0; i < 3; i++)
        {
            Console.WriteLine("Value[" + i + ", " + j + "] = " + dataArray[j, i]);
        }
    }
    long byteCountArray = dataArray.GetLength(0) * dataArray.GetLength(1) * sizeof(byte);

    var bufferByte = new byte[byteCountArray];

    Buffer.BlockCopy(dataArray, 0, bufferByte, 0, bufferByte.Length);

    //Here is where I try to convert the values and print them out to see if the  values are still the same:

    byte[] originalByteValues = new byte[bufferByte.Length / 2];
    Buffer.BlockCopy(bufferByte, 0, originalByteValues, 0, bufferByte.Length);
    for (int i = 0; i < 5; i++)
    {
        Console.WriteLine("Values---: " + originalByteValues[i]);
    }

错误发生在 Buffer.BlockCopy 行：

Buffer.BlockCopy(bufferByte, 0, originalByteValues, 0, bufferByte.Length);

我是字节编程/转换的新手，因此不胜感激。

Answer 1

您使数组太小，只有您尝试复制的大小的一半

new byte[bufferByte.Length / 2];

应该是这样的

new byte[bufferByte.Length];