Check string entered is valid month

Well its up to you to decide which is the best way
You could have an array , a text file , a database table
Each time you get a value you should search if it is matched and accordingly act.
e.g
Fb ...is it February or the user wanted to check news on Facebook and the screen refreshed and took him/her to the application
to be 100% sure just dump the string input and limit the user to a combobox...no need for extra validation ,searching..whatever..the values will always be 12,consistent and valid.

try a function like this:

Function validateMonth(v As String) As String
        Dim DateValue As Date
        If (Date.TryParse("1 " + v + " 2000", DateValue)) Then
            Return v
        Else
            Return "Not valid month"
        End If
    End Function

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then:

Dim Str As String = "Jan"
        MessageBox.Show(validateMonth(Str))

        Str = "Fb"
        MessageBox.Show(validateMonth(Str))

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try customize accordingly, for example, return a true/ false from function above instead, etc.

Would it not be better the user has to select a month from eg. a combobox rather than type a month in:It is good idea but, the user wants to type.

Thanks Andy
 

haha, great! Perfect! Thanks a lot!

Thanks all!