C# ToCharArray() 方法
csharpserver side programmingprogramming更新于 2025/9/13 21:52:00
C# 中的 ToCharArray() 方法用于将此实例中的字符复制到 Unicode 字符数组。
语法
语法如下 -
public char[] ToCharArray (); public char[] ToCharArray (int begnIndex, int len);
以上，begnIndex 是此实例中子字符串的起始位置。len 是此实例中子字符串的长度。
示例
现在让我们看一个例子 -
using System;
public class Demo {
public static void Main(String[] args) {
string str1 = "Notebook";
string str2 = "Ultrabook";
char[] arr1 = str1.ToCharArray();
char[] arr2 = str2.ToCharArray();
Console.WriteLine("String1 = "+str1);
Console.WriteLine("String1 ToUpperInvariant = "+str1.ToUpperInvariant());
Console.WriteLine("String1 Substring from index4 = " + str1.Substring(4, 4));
Console.Write("Character array...String1 =");
for (int i = 0; i < arr1.Length; i++)
Console.Write(" " + arr1[i]);
Console.WriteLine("
String2 = "+str2);
Console.WriteLine("String2 ToUpperInvariant = "+str2.ToLowerInvariant());
Console.WriteLine("String2 Substring from index2 = " + str2.Substring(0, 5));
Console.Write("Character array...String2 =");
for (int i = 0; i < arr2.Length; i++)
Console.Write(" " + arr2[i]);
}
}
输出
String1 = Notebook String1 ToUpperInvariant = NOTEBOOK String1 Substring from index4 = book Character array...String1 = N o t e b o o k String2 = Ultrabook String2 ToUpperInvariant = ultrabook String2 Substring from index2 = Ultra Character array...String2 = U l t r a b o o k
示例
using System;
public class Demo {
public static void Main(String[] args) {
string str1 = "Welcome!";
string str2 = "Thisisit!";
char[] arr1 = str1.ToCharArray(3,2);
char[] arr2 = str2.ToCharArray(2,2);
Console.WriteLine("String1 = "+str1);
Console.WriteLine("String1 ToUpperInvariant = "+str1.ToUpperInvariant());
Console.WriteLine("String1 Substring from index4 = " + str1.Substring(4, 4));
Console.Write("Character array...String1 =");
for (int i = 0; i < arr1.Length; i++)
Console.Write(" " + arr1[i]);
Console.WriteLine("
String2 = "+str2);
Console.WriteLine("String2 ToUpperInvariant = "+str2.ToLowerInvariant());
Console.WriteLine("String2 Substring from index2 = " + str2.Substring(0, 5));
Console.Write("Character array...String2 =");
for (int i = 0; i < arr2.Length; i++)
Console.Write(" " + arr2[i]);
}
}
输出
这将产生以下输出 -
String1 = Welcome! String1 ToUpperInvariant = WELCOME! String1 Substring from index4 = ome! Character array...String1 = c o String2 = Thisisit! String2 ToUpperInvariant = thisisit! String2 Substring from index2 = Thisi Character array...String2 = i s
