Form closes error: ArgumentException was unhandled when using Strings in VB.net

Question

There is a weird error when I try to close my Windows Form... I am trying to do a string manipulation of this string: ABEL, SCOTT - 1472 (COL) when the ComboBox Selected Item changed. It is able to work as you can see from the debugger below, but when the form closes, an error throws.

My ComboBox items is populated by a Data Source with the Me.GetRunnersTableAdapter.Fill(Me.WSCDbDataSet.GetRunners) function.

Is this a bug?

Answer 1

I've gotten it to work by using Try, Catch.

Dim myLastName
myLastName = InStr(1, cbRunner.Text, ",")

Dim myFirstName
myFirstName = InStr(myLastName + 2, cbRunner.Text, "-")

Dim myBibNumber
myBibNumber = InStr(myFirstName + 2, cbRunner.Text, "(")


Try
LastName.Text = Trim$(Strings.Left(cbRunner.Text, myLastName - 1))
FirstName.Text = Trim$(Mid(cbRunner.Text, myLastName + 2, myFirstName - myLastName - 2))
BibNumber.Text = Trim$(Mid(cbRunner.Text, myFirstName + 2, myBibNumber - myFirstName - 2))
Catch ex As ArgumentException

End Try