How do I check to see if a string is within an array in Visual Basic?

Question

I am a PHP developer and not a Visual Basic person.

I have an array:

Dim ShippingMethod() As String = {"Standard Shipping", "Ground EST"}
Dim Shipping as String = "Ground EST"

How do I do an if statement that will check if the string Shipping is in the ShippingMethod() array?

Related, but not duplicate (for a List(Of String)): Check if a list of strings contains a value — Peter Mortensen
– Peter Mortensen, Commented Oct 19, 2016 at 17:00

vcsjones · Accepted Answer · 2020-01-15 15:59:06Z

52

If ShippingMethod.Contains(Shipping) Then
    'Go
End If

That implies case-sensitivity. If you want case insensitive:

If ShippingMethod.Contains(Shipping, StringComparer.CurrentCultureIgnoreCase) Then
    'Go
End If

answered Jan 27, 2012 at 19:06

vcsjones

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Comments

rbassett · Accepted Answer · 2019-12-28 16:59:30Z

13

I get the error 'Contains' is not a member of 'String()' if I try the above answer.

Instead I used IndexOf :

Dim index As Integer = Array.IndexOf(ShippingMethod, Shipping)
If index < 0 Then
    ' not found
End If

answered Feb 1, 2019 at 15:21

rbassett

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codingg · Accepted Answer · 2019-09-11 17:40:36Z

3

Answer:

Dim things As String() = {"a", "b", "c"}
If things.Contains("a") Then
    ' do things
Else
    ' don't do things
End If

answered Sep 11, 2019 at 17:40

codingg

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