Using a swear word filter with InStr in Visual Basic 2012 - vba

Question

I want to compare the IF argument to a string array. The user will try to put in a teamname into a textbox, if the user uses a swear word anywhere within that textbox, it will display an error message and clear the textbox. If the user has not sworn, it will register the teamname and carry on with the program (As can be seen in the 2nd IF statement). I have tried to get this code to work for a week now and cannot get it to work.
Private Sub SelectionButtonEnter_Click(sender As Object, e As EventArgs) Handles SelectionButtonEnter.Click
Dim HasSworn As Boolean = False
Dim swears() As String = {"Fuck", "fuck", "Shit", "shit", "Shite", "shite", "Dick", "dick", "Pussy", "pussy", "Piss", "piss", "Vagina", "vagina", "Faggot", "faggot"} 'Declare potential swear words the kids can use
For Each swear As String In swears
If InStr(SelectionTextBoxTeamName.Text, swear) > 0 Then
SelectionTextBoxTeamName.Clear() 'Clear the textbox
MessageBox.Show("Remember ... You can be disqualified, raise your hand and Blair will set up the program for you again") 'Let the user know they have entered a swear word and ask them to select another team name
End If
If Not InStr(SelectionTextBoxTeamName.Text, swear) > 0 Then
Timer1.Enabled = True 'Enable timer 1 for the learn box
Timer3ForSelection.Enabled = True 'Enable this timer to show the learn button
TeamName = SelectionTextBoxTeamName.Text() 'Once this button has been pressed, store the content of that textbox in a the TeamName string
SelectionLabelTeamName.Text = "Welcome " & SelectionTextBoxTeamName.Text & " Please click 'Learn' in the box below to begin" 'Display the contents of the string along with other text here
SelectionLabelTeamNameTL.Text() = "Team Name: " & TeamName 'Display the contents of the string along with other text here
SelectionTextBoxTeamName.BackColor = Color.Green 'Have the back color of the box set to green
SelectionTextBoxTeamName.Enabled = False 'Do not allow the user/users enter another team name
End If
Next 'A next must be declared in a for each statement
End Sub
Thanks in advance.

Answer 1

I don't think I'd approach it that way; if the user types f**kyou, your code wouldn't catch it. How about this instead:
In your code:
If ContainsBannedWord(SelectionTextBoxTeamName.Text) Then
Msgbox "Hold out your hand, bad person. SlapSlapSlap"
Else
Msgbox "Good boy!"
End if
Function ContainsBannedWord(sInput As String) As Boolean
Dim aBannedWords(1 To 5) As String
Dim x As Long
' Make all the banned words capitalized
aBannedWords(1) = "BANNED1"
aBannedWords(2) = "BANNED2"
aBannedWords(3) = "BANNED3"
aBannedWords(4) = "BANNED4"
aBannedWords(5) = "BANNED5"
For x = LBound(aBannedWords) To UBound(aBannedWords)
If InStr(UCase(sInput), aBannedWords(x)) > 0 Then
ContainsBannedWord = True
Exit Function
End If
Next
ContainsBannedWord = False
End Function