Using a Switch statement with Enum C#
c#, enums, switch-statement
Solution
NET Framework contains a huge amount of code. Sometime it is just difficult to find the needed one, but the probability that there is something already there are high. And, while it takes time to search, it is a well spent time because you feed yourself with useful knowledge for your future work
CultureInfo.CurrentCulture.DayFormatInfo.MonthNames DateTime.DaysInMonth
using System.Globalization;
static void Main(string[] args)
{
Console.Write("Enter a Number to find out what Month it is: ");
int userInput = Convert.ToInt16(Console.ReadLine());
if(userInput > 0 && userInput < 13)
{
string monthName = CultureInfo.CurrentCulture.DayTimeFormat.MonthNames[userInput-1];
int daysInMonth = DateTime.DaysInMonth(2013, userInput);
......
}
}
If you need to account also for leap years you should get input for the year but it is pretty straightforward
Problem
Hi I am creating a Console app, where the user enters a number of a month and the app works out what month it is and displays answer and displays number of days in the month. I had it working when the switch statements was in the Main method, however now it displays the wrong month. I have the following code: ``` namespace ConsoleCA2{ public enum Months { January = 31, February = 28, March = 31, April = 30, May = 31, June = 30, July = 31, August = 31, September = 30, October = 31, November = 30, December = 31 }; public class Program { public const string NEWLINE = "\n"; //constant for new line static void Main(string[] args) { try { //prompt user for month number. Console.Write("Enter a Number to find out what Month it is: "); //convert users answer to integer int userInput = Convert.ToInt16(Console.ReadLine()); //declare and initalise int daysInMonth = 0; string answer = String.Empty; //call relevent calculation methods answer = DetermineMonth(userInput); daysInMonth = DetermineDaysInMonth(userInput); //Write users answer to screen Console.WriteLine(answer); //Prompt user, whether they want to know number of days in the //month Console.Write("Would you like to know the number of days in" + " {0}: ", answer); //assign users answer to variable string userAnswer = Console.ReadLine(); //Output answer if needed. if (userAnswer == "yes".Trim().ToLower()) { Console.WriteLine("The number of days in {0} is: {1}", answer, daysInMonth.ToString()); } else if (userAnswer == "no".Trim().ToLower()) { Console.WriteLine(NEWLINE); Console.WriteLine("You answered No, Have a good day!"); } else { Console.WriteLine("Please answer yes or no."); } Console.Read(); //Pauses screen for user } //catch any errors. catch (Exception err) { Console.WriteLine("Error" + err.Message); } } /// <summary> /// Determines What month the use enters and returns string value /// </summary> /// <param name="userInput"></param> /// <returns>returns the month as string</returns> public static String DetermineMonth(int userInput) { switch (userInput) { case 1: return Months.January.ToString(); case 2: return Months.February.ToString(); case 3: return Months.March.ToString(); case 4: return Months.April.ToString(); case 5: return Months.May.ToString(); case 6: return Months.June.ToString(); case 7: return Months.July.ToString(); case 8: return Months.August.ToString(); case 9: return Months.September.ToString(); case 10: return Months.October.ToString(); case 11: return Months.November.ToString(); case 12: return Months.December.ToString(); default: return "Error"; } } /// <summary> /// Determines how many days is in selected month as integer /// </summary> /// <param name="userInput"></param> /// <returns>returns how many days in month</returns> public static int DetermineDaysInMonth(int userInput) { switch (userInput) { case 1: return Convert.ToInt16(Months.January); case 2: return Convert.ToInt16(Months.February); case 3: return Convert.ToInt16(Months.March); case 4: return Convert.ToInt16(Months.April); case 5: return Convert.ToInt16(Months.May); case 6: return Convert.ToInt16(Months.June); case 7: return Convert.ToInt16(Months.July); case 8: return Convert.ToInt16(Months.August); case 9: return Convert.ToInt16(Months.September); case 10: return Convert.ToInt16(Months.October); case 11: return Convert.ToInt16(Months.November); case 12: return Convert.ToInt16(Months.December); default: return 0; } } ``` The old switch statement was this: ``` switch (userInput) { case 1: answer = Months.January.ToString(); daysInMonth = Convert.ToInt16(Months.January); break; case 2: answer = Months.February.ToString(); daysInMonth = Convert.ToInt16(Months.February); break; case 3: answer = Months.March.ToString(); daysInMonth = Convert.ToInt16(Months.March); break; case 4: answer = Months.April.ToString(); daysInMonth = Convert.ToInt16(Months.April); break; case 5: answer = Months.May.ToString(); daysInMonth = Convert.ToInt16(Months.May); break; case 6: answer = Months.June.ToString(); daysInMonth = Convert.ToInt16(Months.June); break; case 7: answer = Months.July.ToString(); daysInMonth = Convert.ToInt16(Months.July); break; case 8: answer = Months.August.ToString(); daysInMonth = Convert.ToInt16(Months.August); break; case 9: answer = Months.September.ToString(); daysInMonth = Convert.ToInt16(Months.September); break; case 10: answer = Months.October.ToString(); daysInMonth = Convert.ToInt16(Months.October); break; case 11: answer = Months.November.ToString(); daysInMonth = Convert.ToInt16(Months.November); break; case 12: answer = Months.December.ToString(); daysInMonth = Convert.ToInt16(Months.December); break; default: answer = "Error"; break; } ``` Which worked until I changed to separate methods then it went downhill from there. Now even when I put it back it still gets the months mixed up? So confused :S Thank you in advance for any help... if you can understand the messy code :p