C# 中的 StringBuilder.Chars[] 属性
csharpserver side programmingprogramming更新于 2025/9/21 17:37:17
StringBuilder.Chars[] 属性用于获取或设置此实例中指定字符位置的字符。
慢下来
语法如下 -
public char this[int index] { get; set; }
以上，index 参数是字符的位置。
请
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");
int num = 0;
for (int i = 0; i < strBuilder.Length; i++) {
char c = strBuilder[i];
if (Char.IsDigit(c))
num++;
}
Console.WriteLine("String = "+strBuilder);
Console.WriteLine("Numbers in the string = "+num);
}
}
输出
这将产生以下输出 -
String = ghgh78hkjj Numbers in the string = 2
示例
现在让我们看另一个例子 -
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);
}
}
输出
这将产生以下输出 -
String = ghgh78hkjj Character = h
