Answers to Comparing Strings Using LCase() Function Exercise

To avoid problems with inconsistent case we should use the ToUpper( ) or ToLower( ) method or Ucase( ) or Lcase( ) functions.

The LCase( ) and UCase( ) functions convert the string passed to them to all lowercase or all uppercase respectively.

The ToUpper( ) or ToLower( ) methods do the same thing.

What would the result be if the user entered the following strings in the txtState textbox?

txtState.Text	strState	Output
1) Oregon	oregon	Shipping Charge = $30
2) California	california	Shipping Charge = $32.50
3) Illinois	illinois	Incorrect State
4) california	california	Shipping Charge = $32.50

Note: contents of strState is always in all lowercase. Comparison is to all lowercase string constants.

Dim strState As String

strState = txtState.Text.ToLower

If strState = "hawaii" Then

msgBox("Shipping Charge = $25")

ElseIf strState = "oregon" Then

msgBox("Shipping Charge = $30")

ElseIf strState = "california" Then

msgBox("Shipping Charge = $32.50")

Else

msgBox("Incorrect State")

End If