How to Get a Total Number of Days in a Month using built in Functions in C#?

Given a year Y and month M, the task is to get a total number of days in a month in C#.

Examples:

Input: Y = 2020 N = 02
Output: 29
  
Input: Y = 1996 N = 06
Output: 30

Method 1: Using DateTime.DaysInMonth(year, month) Method: This method is used to get the number of days in the specified month and year.

Step 1: Get the year and month.

Step 2: The DateTime.DaysInMonth() is used to get the number of days in a month
int days = DateTime.DaysInMonth(year, month);;
Step 3: This integer value is the number of days in the month.

Below is the implementation of the above approach:

C#

// C# program to Get a Total Number 
// of Days in a Month 
using System;  
    
public class GFG{  
      
    // function to get the full month name  
    static int getdays(int year, int month)   
    {  
        int days = DateTime.DaysInMonth(year, month); 
          
        return days; 
    }  
      
    static public void Main ()  
    {   
        int Y = 2020; // year 
        int M = 02; // month 
          
        Console.WriteLine("Total days in ("
        + Y + "/" + M + ") : "+ getdays(Y, M));  
    }   
}

Output:

Total days in (2020/2) : 29

Method 2: Using CultureInfo.CurrentCulture.Calendar.GetDaysInMonth(year,month) Method: This method is used to get the number of days in the specified month and year. You need to use System.Globalization namespace.

Step 1: Get the year and month.

Step 2: The CultureInfo.CurrentCulture.Calendar.GetDaysInMonth() is used to get the number of days in a month
int days = CultureInfo.CurrentCulture.Calendar.GetDaysInMonth(year, month);;
Step 3: This integer value is the number of days in the month.

Below is the implementation of the above approach:

C#

// C# program to Get a Total Number 
// of Days in a Month 
using System;  
using System.Globalization; 
    
public class GFG{  
      
    // function to get the full month name  
    static int getdays(int year, int month)   
    {  
        int days = CultureInfo.CurrentCulture. 
        Calendar.GetDaysInMonth(year, month); 
          
        return days; 
    }  
      
    static public void Main ()  
    {   
        int Y = 2020; // year 
        int M = 02; // month 
          
        Console.WriteLine("Total days in ("
        + Y + "/" + M + ") : "+ getdays(Y, M) 
        + " days");  
    }   
}

Output:

Total days in (2020/2) : 29 days

My Personal Notes

C#

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