Trim.length Help

Hi guys,
I'm using VS2005 and VB.NET for this program.
I'm trying to validate a textbox for a "State" so that the length is limited to two characters and they are both capitalized.
for ex: CA for California
any hints on how to do it using the Trim and Length methods?
I know there are probably some easier ways out there but I'm required to get it done this way for class.

Thank you

Well, .Trim will strip leading and trailing spaces from the text. .Length will tell you how long the string is. And .ToUpper will make the string upper case.

-tg

Look at the MaxLength property of the textbox, this property lets you limit the number of characters that can be typed into the box.

nabilino, in this case it may be easier to consider using a combobox for this (set as a dropdownlist)

here's all 50 state's abbreviations:

Code:

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New String() {"AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "FL", "GA", "HI", "ID", "IL", "IN", "IA", "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ", "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT", "VA", "WA", "WV", "WI", "WY"}

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Juggalo, maybe you missed his quote:

Quote:

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know there are probably some easier ways out there but I'm required to get it done this way for class.

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Ok! so what can I write to disable the user to input character other than letters? like if he puts in: "/S" it will generate an error...

honestly there are about 100 ways to do this, so we would really need to know the specs of the project. Also being that this is homework, most people on this forum will be pretty reluctant to just provide fully working solutions to your homework ;)

Quote:

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Originally Posted by kleinma

Juggalo, maybe you missed his quote:

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Yes I did, sucks to be him

:D I know...it's not really homework. it's an online lab and i'm not required to do it or graded for it. I just want to follow his rules to get the most out of it.

vb Code:

'Validate State TextBox
        If Me.stateTextBox.Text = "" Then
            e.Cancel = True
            ErrorProvider1.SetError(stateTextBox, "State cannot be missing!")
        Else
            ErrorProvider1.SetError(stateTextBox, "")
        End If
 
        If Me.salesTextBox.Text IsNot "AA" Then
            ErrorProvider1.SetError(stateTextBox, "State name has to be two letters!")
        Else
            ErrorProvider1.SetError(cityTextBox, "")
        End If

why does your second else statement reference cityTextBox?

Also I would be using if-elseif instead of multiple if-else-endif statements.

Code:

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'validate state
        Dim theStates() As String = {"AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "FL", "GA", "HI", "ID", "IL", "IN", "IA", "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ", "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT", "VA", "WA", "WV", "WI", "WY"}
        If Array.IndexOf(theStates, what goes here) = -1 Then
         
            Stop
        Else
         
            Stop
        End If

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