C#中的StringBuilder.CopyTo()方法
C#中的StringBuilder.CopyTo()方法用于将字符从此实例的指定段复制到目标Char数组的指定段。
语法
语法如下-
public void CopyTo (int sourceIndex, char[] dest, int destIndex, int count);
在上面，参数sourceIndex是此实例中字符复制的起始位置。dest是要复制字符的数组，而destIndex是目标将复制字符的起始位置。count参数是要复制的字符数。
示例
现在让我们看一个例子-
using System;
using System.Text;
public class Demo {
public static void Main() {
StringBuilder strBuilder = new StringBuilder("ghgh78hkjj");
char c = strBuilder[3];
Console.WriteLine("String = "+strBuilder);
Console.WriteLine("Character = "+c);
char[] arr = new char[15];
strBuilder.CopyTo(3, arr, 2, 6);
Console.WriteLine("\nCopied String in char array...");
Console.WriteLine(arr);
}
}输出结果
String = ghgh78hkjj Character = h Copied String in char array... h78hkj
示例
现在让我们来看另一个例子-
using System;
using System.Text;
public class Demo {
public static void Main() {
StringBuilder strBuilder = new StringBuilder("JohnWick");
Console.WriteLine("String = "+strBuilder);
char[] arr = new char[5] {'a', 'b', 'c', 'd', 'e'};
strBuilder.CopyTo(1, arr, 1, 3);
Console.WriteLine("\nCopied String in char array...");
Console.WriteLine(arr);
}
}输出结果
这将产生以下输出-
String = JohnWick Copied String in char array... aohne