To get the previous Month
C# Code :
DateTime LastMonthDate=DateTime.Now.AddMonths(-1);
Response.Write(LastMonthDate.ToString("MM/dd/yyyy"));
VB.net Code:
DateTime.Now.AddMonths(-1).ToString("MM/dd/yyyy")
Result
if the current date is 10/22/2008 , then the output of the above code is 09/22/2008