Multiple Strings in One String with Or

Question

I want to check every string in indexpage string witf If. This is indexpage

Dim indexpage As String = "string1" Or "string2"

I've tryed parentheses, OrElse but it didn't worked.. And It's not a problem about If function. It still gives me this error when I try it without If function...

The Error:

An unhandled exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll

Additional information: Conversion from string "string1" to type 'Boolean' is not valid.

What would you expect indexpage to contain after such an assignment? — James Thorpe
– James Thorpe, Commented Sep 23, 2015 at 11:37
Or are you saying you want to check if indexpage is already equal to either one of those strings? — James Thorpe
– James Thorpe, Commented Sep 23, 2015 at 11:38
In that case: possible duplicate of Check whether a string is not equal to any of a list of strings — James Thorpe
– James Thorpe, Commented Sep 23, 2015 at 11:40
Oops - that one is if it's not in the list of strings - your Q is the same but without the Not. — James Thorpe
– James Thorpe, Commented Sep 23, 2015 at 11:41

Eren · Accepted Answer · 2015-09-23 11:46:57Z

1

Thanks to James Thorpe, I found the answer.

Dim testAgainst As String() = {"02","03","06","07"}

And the If function

    If testAgainst.Contains(WebControl1.Source.ToString) Then
        ' code
    Else
        ' code
    End If

answered Sep 23, 2015 at 11:46

Eren

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