将二维数组转换为 C# 中的一维数组？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9322479/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Converting 2 dimensional array to Single dimensional in C#?
提问by user662285
I am converting 2dimensional array to Single dimensional in C#. I receive the 2 dimensional array from device (C++) and then I convert it to 1 dimensional in C#. Here is my code:
我正在将二维数组转换为 C# 中的一维数组。我从设备（C++）接收二维数组，然后在 C# 中将其转换为一维数组。这是我的代码：
int iSize = Marshal.SizeOf(stTransactionLogInfo); //stTransactionLogInfo is a structure
byte[,] bData = (byte[,])objTransLog; //objTransLog is 2 dimensionl array from device
byte[] baData = new byte[iSize];
for (int i = 0; i < bData.GetLength(0); i++)
{
for (int j = 0; j < iSize; j++)
{
baData[j] = bData[i, j];
}
}
I get the desired result from above code, but the problem is it is not the standard way of implementation. I want to know how it can be done in a standard way. May be doing Marshalling , I am not sure. Thanks in advance.
我从上面的代码中得到了想要的结果，但问题是它不是标准的实现方式。我想知道如何以标准方式完成。可能正在做编组，我不确定。提前致谢。
采纳答案by dtb
You can use the Buffer.BlockCopy Method:
您可以使用Buffer.BlockCopy 方法：
byte[,] bData = (byte[,])objTransLog;
byte[] baData = new byte[bData.Length];
Buffer.BlockCopy(bData, 0, baData, 0, bData.Length);
Example:
例子：
byte[,] bData = new byte[4, 3]
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 },
{ 10, 11, 12 }
};
byte[] baData = new byte[bData.Length];
Buffer.BlockCopy(bData, 0, baData, 0, bData.Length);
// baData == { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }
回答by Rakin
Simplest method
最简单的方法
int iSize = Marshal.SizeOf(stTransactionLogInfo); //stTransactionLogInfo is a structure
byte[,] bData = (byte[,])objTransLog; //objTransLog is 2 dimensionl array from device
byte[] baData = bData.Cast<byte>().ToArray();
回答by Serge Voloshenko
easy to understend and conver to a different language.
易于理解并转换为不同的语言。
// Create 2D array (20 rows x 20 columns)
int row = 20;
int column = 20;
int [,] array2D = new int[row, column];
// paste into array2D by 20 elements
int x = 0; // row
int y = 0; // column
for (int i = 0; i < my1DArray.Length; ++i)
{
my2DArray[x, y] = my1DArray[i];
y++;
if (y == column)
{
y = 0; // reset column
x++; // next row
}
}
回答by stevec
bData.Cast<byte>()will convert the multi-dimensional array to a single dimension.
bData.Cast<byte>()将多维数组转换为单维。
This will do boxing, unboxing so isn't the most performant way, but is certainly the simplest and safest.
这将进行装箱，拆箱，因此不是最高效的方式，但肯定是最简单和最安全的。
回答by eric xu
If 2-D array's column size is dynamic, below code is usable:
如果二维数组的列大小是动态的，则可以使用以下代码：
public static T[] Convert2DArrayTo1D<T>(T[][] array2D)
{
List<T> lst = new List<T>();
foreach(T[] a in array2D)
{
lst.AddRange(a);
}
return lst.ToArray();
}
