problem with my code for incorrect text box inputs on a userform

[Guest]

On my spreadsheet I have a user form that loads up where their are two text
boxes on for the First Name and another for the Last Name. With the help of
Tom I have created a macro that takes the input from the text boxes and takes
the user to their corresponding range.

The problem I am having is if an incorrect user name is entered such as "Bob
Dole" I get a run time error instead of the message box that is entered in
my code. Below is the code I have. Can someone tell me what is wrong with
my IF rng=nothing I keep getting an object not defined error message on it
when the wrong name is inputed.

Private Sub Login_click()

With UserInterface
On Error Resume Next
Set rng = Worksheets("Employee Tracker").Range( _
.TextboxFirst.Text & "_" & .TextBoxLast.Text)
On Error GoTo 0
If rng Is Nothing Then
MsgBox "Bad name, quitting"
Unload UserInterface
ThisWorkbook.Close Savechanges:=False
End If
End With
Worksheets("Employee Tracker").Unprotect Password:="testpass"
Range("A5:N25").Select
Selection.Locked = True
Application.Goto rng, True
Unload UserInterface
Call Macro3
End Sub

Thanks in advance

 

[Guest]

Have you given any thought to using a ComboBox to have the user select the
name rather than typing it? That might help prevent typos

 

[Guest]

I did but it is very important that other workers can not fill in the name of
another employee and since it has to be exact spelling having them type it in
alleviates this. The reason i need to have a message box come up if a user
name is not correct is not specifically in my department but for the others
that will be using this sheet for their own departments.