无法检测移动操作员

Question

namespace Contact
{
    class Contact
    {
        private string personName, personId , mobileNumber;
        private char gender; 
        private int age;
    public Contact()
    {
        this.personName = "";
        this.personId = "";
        this.mobileNumber = "";
        this.gender = '';
        this.age = 0;
    }
    public Contact(string personName, string personId, string mobileNumber,char gender, int age)
    { 
          this.personName =personName ;
               this.personId =personId;
                this. mobileNumber = mobileNumber;
                this.gender=gender;
                this.age=age;
    }
    public void SetPersonName(string personName)
    {
        this.personName = personName;
    }
    public void SetPersonId(string personId)
    {
        this.personId = personId;
    }
    public void  SetMobileNumber(string mobileNumber)
    {
         this. mobileNumber = mobileNumber;
    }
    public void SetGender(char gender)
    {
        this.gender = gender;
    }
    public void SetAge(int age)
    {
        this.age = age;
    }
    public string GetPersonName()
    {
        return this.personName;
    }
    public string GetPersonId()
    {
        return this.personId;
    }
    public string GetMobileNumber()
    {
        return this.mobileNumber;
    }
    public char GetGender()
    {
        return this.gender;
    }
    public int GetAge()
    {
        return this.age;
    }
   public void DetectMobileOperator()
    {

        if (this.mobileNumber[2] == 7)
        {
            Console.WriteLine("Gp");
        }
        else if (this.mobileNumber[2] == 9)
        {
            Console.WriteLine("Banglalink");
        }
        else if (this.mobileNumber[2] == 8)
        {
            Console.WriteLine("Robi");
        }

    }
   public void ShowPersonInfo()
   {
       Console.WriteLine("PersonName: {0}npersonId: {1}nMobilenumber: {2}nGender: {3}nAge: {4}", this.personName, this.personId, this.mobileNumber, this.gender,this.age);
   }


}
}
namespace Contact
{
    class Program
    {
        static void Main(string[] args)
        {
         Contact c = new Contact("jerin","14255581","01782813945",'F',22);
        c.ShowPersonInfo();
        c.DetectMobileOperator();

    }
}
}

但我没有得到操作员名称。请您帮助我。

Answer 1

您比较 this.mobileNumber[2]中的 CC_1与 int的数字。

要解决您的问题，您应该执行以下操作（例如，让我们比较7）：

char value;
int number = 7;
char.TryParse(number.ToString(), out value);
if(this.mobileNumber[2] == value)
{
}

我希望您会发现它有用