Get current week number from Date C#
How can I get the current week number from the date using C# (dot net core)? Imports: using System ; using System . Collections . Generic ; using System . Linq ; Solution #1: Considering Sunday as the first day of the week. public static int GetCurrentWeek ( DateTime dt ) { // Sunday as first day of week DateTime firstOfMonth = new DateTime ( dt . Year , dt . Month , 1 ); return (( dt . Day - 1 + ( int ) firstOfMonth . DayOfWeek )) / 7 + 1 ; } Solution #2: Considering Monday as the first day of the week. public static int GetCurrentWeek ( DateTime dt ) { // Monday as first day of week DateTime firstOfMonth = new DateTime ( dt . Year , dt . Month , 1 ); int dayOfWeek = ( int )( firstOfMonth . DayOfWeek ) - 1 ; if ( dayOfWeek < 0 ) dayOfWeek = 6 ; return ( dt . Day - 1 + dayOfWeek ) / 7 + 1 ; } Method Usage: Console . WriteLine ( GetCurrentWeek ( new DateTime ( 2022 , 06 , 27 )));