C# 验证输入一行字符串的格式为“姓名-密码-课程”，不符合，则提示重新输入

 

验证字符串格式的函数代码为：

 static void StrWillBeOk(ref String str)
        {
             bool toBeContinue = false;
             string[] strSplit = new string[3];

             while (!toBeContinue)
             {
                 strSplit = str.Split('-');
                 try
                 {
                     bool strIsOk = true;
                     if (strSplit.Length != 3)
                         strIsOk = false;
                     foreach (string s in strSplit)
                         if (s == "")
                         {
                             strIsOk = false;
                             break;
                         }
                     if (!strIsOk)
                         throw new ArgumentException();
                     else
                         toBeContinue = true;
                        
                 }
                 catch (ArgumentException e)
                 { 
                     Console.WriteLine("格式不正确，请严格按照‘姓名-密码-课程’输入！");
                     str = Console.ReadLine();
                 }
             }   
        }

使用该函数：

 

string TeacherInfo = Console.ReadLine().Trim();
StrWillBeOk(ref TeacherInfo);//验证输入的字符串是否有效
string[] theTeacherInfo = TeacherInfo.Split('-');