C# 按指定数量从前面或者后面删除字符串

 1 /// <summary>
 2 /// 从字符串前面删除指定字符个数
 3 /// </summary>
 4 /// <param name="s">字符串</param>
 5 /// <param name="len">个数</param>
 6 /// <returns>返回删除后的字符串</returns>
 7 public static string RemoveLeft(string s, int len)
 8 {
 9     return s.PadLeft(len).Remove(0, len);
10 }
11 
12 /// <summary>
13 /// 从字符串后面删除指定字符个数
14 /// </summary>
15 /// <param name="s">字符串</param>
16 /// <param name="len">个数</param>
17 /// <returns>返回删除后的字符串</returns>
18 public static string RemoveRight(string s, int len)
19 {
20     s = s.PadRight(len);
21     return s.Remove(s.Length - len, len);
22 }