How to add months in date that retrive form table value ?

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Hi I am retrieve date from one table and converted that string value to DateTime format,and then i add 2 months in that date value,but it add month value in date place.
For Eg:
Date is 03/09/2015 --- dd/MM/yyyy format
no of months is 2, if i add month to that date it became 05/09/2015,but correct one is 03/11/2015.
How to achieve this ?

Here is my program code

VB

Dim splitstrcompdetails As String() = strcompdetails.Split(":") ' In splitstrcompdetails we get Aravind:3/9/2015
Dim strRegDate As DateTime = Convert.ToDateTime(splitstrcompdetails(1)).ToString(stringDateFormat) 'here stringDateFormat is dd-MMM-yyyy and we get strRegDate as 3/9/2015
Dim strTotMonths As Integer = Convert.ToInt32(strserialdetails) + Convert.ToInt32(expirymonth.Value) 'her strserialdetails is 2 and expirymonth.Value is 3 so strTotMonths is 5
Dim strExpDate As Date = strRegDate.AddMonths(Convert.ToInt32(strTotMonths))' but here we get strExpDate as 8/9/2015  but correct value is 3/2/2016

Pls reply asap

Regards
Aravind

Posted 2-Sep-15 19:46pm

Aravindba

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Maciej Los · Accepted Answer · 2015-09-02T20:11:00

Solution 1

Have a look at example:

VB

Dim strcompdetails As String = "Aravind:3/9/2015"
Dim stringDateFormat As String = "dd-MMM-yyyy"
Dim provider As System.Globalization.CultureInfo = new System.Globalization.CultureInfo("de-DE")
Dim splitstrcompdetails As String() = strcompdetails.Split(":")
Dim RegDate As DateTime = Convert.ToDateTime(splitstrcompdetails(1), provider).AddMonths(5)

Console.WriteLine("{0}", RegDate.ToString(stringDateFormat)) 'return 03-Feb-2016

As you can see, you need to use CultureInfo class[^] to get/set specific culture to be able to get proper result.
Table of Language Culture Names, Codes, and ISO Values Method[^]

Posted 2-Sep-15 20:11pm

Maciej Los

Comments

Aravindba 3-Sep-15 4:02am

hiwhen retive time also i use provider not success,still adding no of months to date field
Dim provider As System.Globalization.CultureInfo = New System.Globalization.CultureInfo("en-US")

Dim strRegDate As DateTime = Convert.ToDateTime(splitstrcompdetails(1), provider).ToString(stringDateFormat)

Dim strExpDate As Date = Convert.ToDateTime(strRegDate, provider).AddMonths(Convert.ToInt32(strTotMonths))

no of months is 6 ,strRegDate is 3/9/2015

strExpDate is 9/9/2015,but expect is 3/3/2016

Maciej Los 3-Sep-15 5:37am

You're using wrong provider. Have you tested with CultureInfo("de-DE")? ISO standard date format is: "yyyy-MM-dd"

Aravindba 3-Sep-15 8:07am

yes working fine,thanx

Maciej Los 3-Sep-15 8:12am

You're very welcome ;)