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, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook

Follow him on twitter @suprotimagarwal

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