本文整理汇总了C#中System.Buffer.BlockCopy方法的典型用法代码示例。如果您正苦于以下问题：C# Buffer.BlockCopy方法的具体用法？C# Buffer.BlockCopy怎么用？C# Buffer.BlockCopy使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Buffer的用法示例。
在下文中一共展示了Buffer.BlockCopy方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DisplayArray
//引入命名空间
using System;
class Example
{
// Display the individual bytes in the array in hexadecimal.
public static void DisplayArray(Array arr, string name)
{
Console.WindowWidth = 120;
Console.Write("{0,11}:", name);
for (int ctr = 0; ctr < arr.Length; ctr++)
{
byte[] bytes;
if (arr is long[])
bytes = BitConverter.GetBytes((long) arr.GetValue(ctr));
else
bytes = BitConverter.GetBytes((short) arr.GetValue(ctr));
foreach (byte byteValue in bytes)
Console.Write(" {0:X2}", byteValue);
}
Console.WriteLine();
}
// Display the individual array element values in hexadecimal.
public static void DisplayArrayValues(Array arr, string name)
{
// Get the length of one element in the array.
int elementLength = Buffer.ByteLength(arr) / arr.Length;
string formatString = String.Format(" {{0:X{0}}}", 2 * elementLength);
Console.Write( "{0,11}:", name);
for (int ctr = 0; ctr < arr.Length; ctr++)
Console.Write(formatString, arr.GetValue(ctr));
Console.WriteLine();
}
public static void Main( )
{
// These are the source and destination arrays for BlockCopy.
short[] src = { 258, 259, 260, 261, 262, 263, 264,
265, 266, 267, 268, 269, 270 };
long[] dest = { 17, 18, 19, 20 };
// Display the initial value of the arrays in memory.
Console.WriteLine( "Initial values of arrays:");
Console.WriteLine(" Array values as Bytes:");
DisplayArray(src, "src" );
DisplayArray(dest, "dest");
Console.WriteLine(" Array values:");
DisplayArrayValues(src, "src");
DisplayArrayValues(dest, "dest");
Console.WriteLine();
// Copy bytes 5-10 from source to index 7 in destination and display the result.
Buffer.BlockCopy(src, 5, dest, 7, 6);
Console.WriteLine("Buffer.BlockCopy(src, 5, dest, 7, 6 )");
Console.WriteLine(" Array values as Bytes:");
DisplayArray(src, "src");
DisplayArray(dest, "dest");
Console.WriteLine(" Array values:");
DisplayArrayValues(src, "src");
DisplayArrayValues(dest, "dest");
Console.WriteLine();
// Copy bytes 16-20 from source to index 22 in destination and display the result.
Buffer.BlockCopy(src, 16, dest, 22, 5);
Console.WriteLine("Buffer.BlockCopy(src, 16, dest, 22, 5)");
Console.WriteLine(" Array values as Bytes:");
DisplayArray(src, "src");
DisplayArray(dest, "dest");
Console.WriteLine(" Array values:");
DisplayArrayValues(src, "src");
DisplayArrayValues(dest, "dest");
Console.WriteLine();
// Copy overlapping range of bytes 4-10 to index 5 in source.
Buffer.BlockCopy(src, 4, src, 5, 7 );
Console.WriteLine("Buffer.BlockCopy( src, 4, src, 5, 7)");
Console.WriteLine(" Array values as Bytes:");
DisplayArray(src, "src");
DisplayArray(dest, "dest");
Console.WriteLine(" Array values:");
DisplayArrayValues(src, "src");
DisplayArrayValues(dest, "dest");
Console.WriteLine();
// Copy overlapping range of bytes 16-22 to index 15 in source.
Buffer.BlockCopy(src, 16, src, 15, 7);
Console.WriteLine("Buffer.BlockCopy( src, 16, src, 15, 7)");
Console.WriteLine(" Array values as Bytes:");
DisplayArray(src, "src");
DisplayArray(dest, "dest");
Console.WriteLine(" Array values:");
DisplayArrayValues(src, "src");
DisplayArrayValues(dest, "dest");
}
}输出：
Initial values of arrays: Array values as Bytes: src: 02 01 03 01 04 01 05 01 06 01 07 01 08 01 09 01 0A 01 0B 01 0C 01 0D 01 0E 01 dest: 11 00 00 00 00 00 00 00 12 00 00 00 00 00 00 00 13 00 00 00 00 00 00 00 14 00 00 00 00 00 00 00 Array values: src: 0102 0103 0104 0105 0106 0107 0108 0109 010A 010B 010C 010D 010E dest: 0000000000000011 0000000000000012 0000000000000013 0000000000000014 Buffer.BlockCopy(src, 5, dest, 7, 6 ) Array values as Bytes: src: 02 01 03 01 04 01 05 01 06 01 07 01 08 01 09 01 0A 01 0B 01 0C 01 0D 01 0E 01 dest: 11 00 00 00 00 00 00 01 05 01 06 01 07 00 00 00 13 00 00 00 00 00 00 00 14 00 00 00 00 00 00 00 Array values: src: 0102 0103 0104 0105 0106 0107 0108 0109 010A 010B 010C 010D 010E dest: 0100000000000011 0000000701060105 0000000000000013 0000000000000014 Buffer.BlockCopy(src, 16, dest, 22, 5) Array values as Bytes: src: 02 01 03 01 04 01 05 01 06 01 07 01 08 01 09 01 0A 01 0B 01 0C 01 0D 01 0E 01 dest: 11 00 00 00 00 00 00 01 05 01 06 01 07 00 00 00 13 00 00 00 00 00 0A 01 0B 01 0C 00 00 00 00 00 Array values: src: 0102 0103 0104 0105 0106 0107 0108 0109 010A 010B 010C 010D 010E dest: 0100000000000011 0000000701060105 010A000000000013 00000000000C010B Buffer.BlockCopy( src, 4, src, 5, 7) Array values as Bytes: src: 02 01 03 01 04 04 01 05 01 06 01 07 08 01 09 01 0A 01 0B 01 0C 01 0D 01 0E 01 dest: 11 00 00 00 00 00 00 01 05 01 06 01 07 00 00 00 13 00 00 00 00 00 0A 01 0B 01 0C 00 00 00 00 00 Array values: src: 0102 0103 0404 0501 0601 0701 0108 0109 010A 010B 010C 010D 010E dest: 0100000000000011 0000000701060105 010A000000000013 00000000000C010B Buffer.BlockCopy( src, 16, src, 15, 7) Array values as Bytes: src: 02 01 03 01 04 04 01 05 01 06 01 07 08 01 09 0A 01 0B 01 0C 01 0D 0D 01 0E 01 dest: 11 00 00 00 00 00 00 01 05 01 06 01 07 00 00 00 13 00 00 00 00 00 0A 01 0B 01 0C 00 00 00 00 00 Array values: src: 0102 0103 0404 0501 0601 0701 0108 0A09 0B01 0C01 0D01 010D 010E dest: 0100000000000011 0000000701060105 010A000000000013 00000000000C010B
示例2:
const int INT_SIZE = 4;
int[] arr = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };
Buffer.BlockCopy(arr, 0 * INT_SIZE, arr, 3 * INT_SIZE, 4 * INT_SIZE);
foreach (int value in arr)
Console.Write("{0} ", value);输出：
2 4 6 2 4 6 8 16 18 20
示例3:
const int INT_SIZE = 4;
int[] arr = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };
Buffer.BlockCopy(arr, 3 * INT_SIZE, arr, 0 * INT_SIZE, 4 * INT_SIZE);
foreach (int value in arr)
Console.Write("{0} ", value);输出：
8 10 12 14 10 12 14 16 18 20