Find if a value exists in an Array
This handy little function will determine if a value is present in an array, and return true or false.
Option Explicit
Public Function IsInArray(FindValue As Variant, arrSearch As Variant) As Boolean
On Error GoTo LocalError
If Not IsArray(arrSearch) Then Exit Function
If Not IsNumeric(FindValue) Then FindValue = UCase(FindValue)
IsInArray = InStr(1, vbNullChar & Join(arrSearch, vbNullChar) & vbNullChar, _
vbNullChar & FindValue & vbNullChar) > 0
Exit Function
LocalError:
'Justin (just in case)
End Function
Usage
Private Sub Command1_Click()
Dim x(5) As String
x(0) = 5
x(1) = 100
x(2) = 2000
x(3) = 11
x(4) = 7
x(5) = 1010
MsgBox IsInArray(10, x)
End Sub
Special Instructions
This code originally appeared on AndreaVB.com, and has been republished here with the permission of Andrea Tincani.
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