How Do You Declare In VB?

Which is a valid statement for declaring a variable in Visual Basic?

You use a normal declaration statement to declare an object variable.

For the data type, you specify either Object (that is, the Object Data Type) or a more specific class from which the object is to be created.

Declaring a variable as Object is the same as declaring it as System..

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 is Variant data type in VB?

The variant data type can be used to define variables that contain any type of data. A tag is stored with the variant data to identify the type of data that it currently contains. You can test whether a variant contains a null value with the IsNull function. …

Which is the valid statement for declaring a variable?

Explanation: The variable is a named memory location which contains the value. This value may or may not change depending upon the circumstances of the program. We can declare more than one variable of the same type in a statement.

What is the default data type in VB?

A default data type is an object.

What are the three rules for naming a variable?

Rules for Naming Variables The first character must be a letter or an underscore (_). You can’t use a number as the first character. The rest of the variable name can include any letter, any number, or the underscore. You can’t use any other characters, including spaces, symbols, and punctuation marks.

What are the rules for creating a variable in Visual Basic?

Declaring Variables in Visual BasicMust be unique within scope.Must begin with a letter or the underscore _ character.May not contain embedded spaces or many special characters (. , “ – $ # * and others). The underscore _ is a valid character.May not be a reserved word.

How do you declare a basic variable?

To create a new variableDeclare the variable in a Dim statement. … Include specifications for the variable’s characteristics, such as Private, Static, Shadows, or WithEvents. … Follow the specifications with the variable’s name, which must follow Visual Basic rules and conventions.More items…•

What is data type and types?

A data type is a type of data. … Some common data types include integers, floating point numbers, characters, strings, and arrays. They may also be more specific types, such as dates, timestamps, boolean values, and varchar (variable character) formats.

What is operator in VB?

An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations. VB.Net is rich in built-in operators and provides following types of commonly used operators − Arithmetic Operators. Comparison Operators. Logical/Bitwise Operators.

What is variable in VB?

A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable in VB.Net has a specific type, which determines the size and layout of the variable’s memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable.

Which keyword is used to declare the variable in VB?

DimDim is the keyword that tells Visual Basic that you want to declare a variable.

What is the purpose of Invoke method?

The Invoke method searches up the control’s parent chain until it finds a control or form that has a window handle if the current control’s underlying window handle does not exist yet. If no appropriate handle can be found, the Invoke method will throw an exception.