What I want to do is be able to remove a section of a string and use the remaining portion of it to add to a Combobox.
Dim randString As String = ""
textbox.text = "(Remove this) - Keep this"
randString = textbox.text.... ' Trim/Split the first portion off somehow?
' Result should look like " - Keep this"
If you just want to remove a portion of the string, you can use the Replace function:
randString = Replace(textbox.text, "(Remove this)", "")
You can put any string variable in as the second argument.