把某些字符串替换成另外的特殊字符

 1  /// <summary>
 2         /// 替换*号
 3         /// </summary>
 4         /// <param name="value">字符串</param>
 5         /// <param name="startLen">前几位字符不替换</param>
 6         /// <param name="endLen">后几位字符不提货</param>
 7         /// <param name="specialChar">需要替换的字符</param>
 8         /// <returns></returns>
 9         public static string ReplaceWithSpecialChar(string value, int startLen = 4, int endLen = 4, char specialChar = ‘*‘)
10         {
11             try
12             {
13                 int lenth = value.Length - startLen - endLen;
14                 string replaceStr = value.Substring(startLen, lenth);
15                 string specialStr = string.Empty;
16                 for (int i = 0; i < replaceStr.Length; i++)
17                 {
18                     specialStr += specialChar;
19                 }
20                 value = value.Replace(replaceStr, specialStr);
21             }
22             catch (Exception)
23             {
24                 throw;
25             }
26             return value;
27         }