# Use Left or Left$ to get the 3 left-most characters in a string
Const baseString As String = "Foo Bar" Dim leftText As String leftText = Left$(baseString, 3) 'leftText = "Foo"
# Use Right or Right$ to get the 3 right-most characters in a string
Const baseString As String = "Foo Bar" Dim rightText As String rightText = Right$(baseString, 3) 'rightText = "Bar"
# Use Mid or Mid$ to get specific characters from within a string
Const baseString As String = "Foo Bar" 'Get the string starting at character 2 and ending at character 6 Dim midText As String midText = Mid$(baseString, 2, 5) 'midText = "oo Ba"
# Use Trim to get a copy of the string without any leading or trailing spaces
'Trim the leading and trailing spaces in a string Const paddedText As String = " Foo Bar " Dim trimmedText As String trimmedText = Trim$(paddedText) 'trimmedText = "Foo Bar"
VBA has built-in functions for extracting specific parts of strings, including:
To avoid implicit type conversion onverhead (and therefore for better performance), use the $-suffixed version of the function when a string variable is passed to the function, and/or if the result of the function is assigned to a string variable.
Null parameter value to a $-suffixed function will raise a runtime error ("invalid use of null") - this is especially relevant for code involving a database.