Question: What Is Function VB?

What are the data types in VB?

Data Types in Visual BasicData TypeSizeRangeShort2 bytes-32,768 to 32,767Single4 bytes-3.4028235E+38 through -1.401298E-45 † for negative values; 1.401298E-45 through 3.4028235E+38 † for positive valuesStringDepends on Platform0 to approximately 2 billion Unicode charactersUInteger4 bytes0 to 4,294,967,29513 more rows.

What are events in VB?

An event is a signal that informs an application that something important has occurred. For example, when a user clicks a control on a form, the form can raise a Click event and call a procedure that handles the event. Events also allow separate tasks to communicate.

What is main procedure?

A main procedure is a procedure that can be specified as the program entry procedure (and so receive control when an ILE program is first called).

What is function in VB net?

In VB.NET, the function is a separate group of codes that are used to perform a specific task when the defined function is called in a program. After the execution of a function, control transfer to the main() method for further execution. It returns a value.

What is the difference between function and procedure in VB?

A procedure is compiled once and can be called multiple times without being compiled. A function returns a value and control to calling function or code. A procedure returns the control but not any value to calling function or code.

Is void a function?

Void functions are created and used just like value-returning functions except they do not return a value after the function executes. In lieu of a data type, void functions use the keyword “void.” A void function performs a task, and then control returns back to the caller–but, it does not return a value.

What is sub in VB?

A Sub procedure is a series of Visual Basic statements enclosed by the Sub and End Sub statements. The Sub procedure performs a task and then returns control to the calling code, but it does not return a value to the calling code. … You can define a Sub procedure in modules, classes, and structures.

Which of the following is correct about VB Net?

Q 2 – Which of the following is correct about VB.NET? A – VB.NET has complete support for object-oriented concepts. VB.NET has complete support for object-oriented concepts. B – Everything in VB.NET is an object, including all of the primitive types (Short, Integer, Long, String, Boolean, etc.)

How can a function return a value in Visual Basic?

To return a value using the Return statementPut a Return statement at the point where the procedure’s task is completed.Follow the Return keyword with an expression that yields the value you want to return to the calling code.You can have more than one Return statement in the same procedure.

What is the difference between method and procedure?

The difference between Method and Procedure. When used as nouns, method means a process by which a task is completed, whereas procedure means a particular method for performing a task.

What is ListBox in VB?

The ListBox represents a Windows control to display a list of items to a user. A user can select an item from the list. It allows the programmer to add items at design time by using the properties window or at the runtime.

What is a subroutine in Excel?

A subroutine is a piece of code that performs a specific task and does not return a result. Subroutines are used to break down large pieces code into small manageable parts. … You can create a subroutine that clears the contents of the text boxes.

What is difference between sub and function in VB net?

A sub performs a task but does not return a value. A function returns a value of the tasks performed. Subs can be recalled from anywhere in the program and in multiple types. Functions are called by a variable.

What is difference between stored procedure and function?

The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.

Which procedure do not return a value?

A Sub procedure does not return a value to the calling code. You call it explicitly with a stand-alone calling statement. You cannot call it by simply using its name within an expression.

What is parameter in VB net?

A parameter represents a value that the procedure expects you to pass when you call it. … For each parameter, you specify a name, a data type, and a passing mechanism (ByVal or ByRef). You can also indicate that a parameter is optional. This means that the calling code does not have to pass a value for it.

What is private sub in VB?

Private Sub sets the scope so that subs in outside modules cannot call that particular subroutine. This means that a sub in Module 1 could not use the Call method to initiate a Private Sub in Module 2. ( Note: If you start at the Application level, you can use Run to override this rule and access a Private Sub)

How do you call a function in Visual Basic?

How to call Function ?You call a Function procedure by using the procedure name, followed by the argument list in parentheses, in an expression.You can omit the parentheses only if you are not supplying any arguments. … A function can also be called using the Call statement, in which case the return value is ignored.More items…

What is a method in VB?

A method is an action that an object can perform. For example, Add is a method of the ComboBox object, because it adds a new entry to a combo box. The following procedure uses the Add method to add a new item to a ComboBox. VB Copy. Sub AddEntry(newEntry as String) Combo1.Add newEntry End Sub.

What is a function and procedure?

A procedure performs a task, whereas a function produces information. Functions differ from procedures in that functions return values, unlike procedures which do not. However, parameters can be passed to both procedures and functions. In a program for drawing shapes, the program could ask the user what shape to draw.

How do you sum in Visual Basic?

To do so:Type in a = Val(TextBox1. Text) and press ↵ Enter .Type in b = Val(TextBox2. Text) and press ↵ Enter .Type in sum = (a + b) and press ↵ Enter .Type in Label4. Text = “The sum of” & a & ” and ” & b & ” is ” & sum & “.” and press ↵ Enter .