Chapter 4 includes a section that drills down on the syntax for the Try Catch Finally statement as well as its new style of error processing based on exceptions.

This statement introduces a new style of processing for run-time errors that relieves the need for the On Error GoTo statement that has been available to programmers since the inception of classic Visual Basic. The use of the Else and Case Else clauses is optional.Ī new type of branching statement is the Try Catch Finally statement. With the Select Case statement, use the Case Else clause as the last clause to catch variable or expression values not specified in preceding Case clauses. Use the Else clause as the last clause in an If Then Else statement with multiple ElseIf clauses to catch a condition not represented by the expression for any If or ElseIf clause. When using branching statements, it is good programming practice to have a catchall clause for variable or expression values that do not match any other clause that you specify. The If Then Else statement can accommodate different expressions in each ElseIf clause. Although you can check for different values in each Case clause within a Select Case statement, each Case clause must apply to the same variable or expression. The Select Case statement applies to situations in which you want to execute code blocks dependent on the value of a variable or expression. Another option for conditionally executing multiple code blocks is to use the Select Case statement. By adding ElseIf clauses after the Then clause, you can specify the conditional execution of more than two code blocks. The If Then Else statement extends this capability by letting you conditionally execute either of two code blocks. The expression should evaluate to True or False.

The basic If Then statement allows you to execute a block of code based on the value of an expression that represents a condition. As with the With End With statement, no changes in the syntax for these statements have occurred in their.

Another branching statement type is the Select Case statement. The If Then and If Then Else statements support branching.

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