Find the Last Day of the Previous Month using C# and VB.NET

A couple of days ago, I had written a post to Find the First and Last Day of the Current Quarter using C#/VB.NET. A user commented asking how to find the last day of the previous month. Here’s how it can be done:

C#

DateTime dt = DateTime.Now;
DateTime lstDay = new DateTime(dt.Year, dt.Month, 1);
lstDay = lstDay.AddDays(-1);
Console.WriteLine("Month: {0}, LastDate: {1}",lstDay.Month, lstDay.Day);
Console.Read();

VB.NET

Dim dt As DateTime = DateTime.Now
Dim lstDay As New DateTime(dt.Year, dt.Month, 1)
lstDay = lstDay.AddDays(-1)
Console.WriteLine("Month: {0}, LastDate: {1}",lstDay.Month, lstDay.Day)
Console.Read()

Output

image

The current month is November, so the last day of the previous month (October) is 31.



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About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.

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