C# IndexOf() 用于获取字符串中指定字符的索引。它将索引作为整数值返回。
public int IndexOf(Char ch) public int IndexOf(Char, Int32) public int IndexOf(Char, Int32, Int32) public int IndexOf(String) public int IndexOf(String, Int32) public int IndexOf(String, Int32, Int32) public int IndexOf(String, Int32, Int32, StringComparision) public int IndexOf(String, Int32, StringComparision) public int IndexOf(String, StringComparision)
ch:字符类型参数。
它返回一个整数值。
using System; public class StringExample { public static void Main(string[] args) { string s1 = "Hello C#"; int index = s1.IndexOf('e'); Console.WriteLine(index); } }
输出:
1
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