Question

我试图将2D数组值转换为byte []并返回原始2D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]);
    }

Buffer.BlockCopy行发生错误：

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

我是使用字节编程/转换的新手，所以任何帮助都会受到赞赏。

Answer 1

你使阵列太小，是你想要复制的一半大小

new byte[bufferByte.Length / 2];

似乎应该是

new byte[bufferByte.Length];

复制字节时出错 - 偏移量和长度超出范围。

1 个答案: