Chapter 10 Quick Reference

Chapter 10 Quick Reference

To	Do this
Create a new module	Click the Add New Item button on the Standard toolbar, and then select the Module template. or Click the Add New Item command on the Project menu, and then select the Module template.
Save a module with a new name	Select the module in Solution Explorer, click the Save Module1.vb As command on the File menu, and then specify a new name.
Remove a module from a program	Select the module in Solution Explorer, and then click the Exclude From Project command on the Project menu.
Add an existing module to a project	On the Project menu, click the Add Existing Item command.
Create a public variable	Declare the variable by using the Public keyword between the Module and End Module keywords in a module. For example: Public TotalSales As Integer
Create a public function	Place the function statements between the Function and End Function keywords in a module. Functions are public by default. For example: Function HitRate(ByVal Hits As Short, ByVal _ Tries As Short) As String Dim Percent As Single Percent = Hits / Tries Return Format(Percent, "0.0%") End Function
Call a Function procedure	Type the function name and any necessary arguments in a program statement, and assign it to a variable or property of the appropriate return type. For example: lblRate.Text = HitRate(Wins, Spins)
Create a public Sub procedure	Place the procedure statements between the Sub and End Sub keywords in a module. Sub procedures are public by default. For example: Sub CostPlusInterest(ByVal Cost As Single, _ ByRef Total As Single) Cost = Cost * 1.05 Total = Int(Cost) End Sub
Call a Sub procedure	Type the procedure name and any necessary arguments in a program statement. For example: CostPlusInterest(Price, TotalPrice)
Pass an argument by value	Use the ByVal keyword in the procedure declaration. For example: Sub GreetPerson(ByVal Name As String)
Pass an argument by reference	Use the ByRef keyword in the procedure declaration. For example: Sub GreetPerson(ByRef Name As String)