VB.NET Data Types

Data Types

In this lesson, you will familiarize yourself with the Visual Studio VB.NET accepted data types.

A “data type” is a class that is primarily used just to hold data. This is different from most other classes since they’re primarily intended to ‘do something’, like access a database or or format a page for example. Although data types can “do something” as well (that is, they also have methods), this isn’t their main purpose.

The list below shows the data types that are defined in the .NET System namespace.

Boolean – true or false

Byte – 8 bit unsigned integer

Char – 16 bit Unicode character

DateTime – date and time of day

Decimal – decimal number

Double – 64 bit floating-point number

Int16 – 16 bit signed integer

Int32 – 32 bit signed integer

Integer – 32 bit signed integer

Int64 – 64 bit signed integer

SByte – 8 bit signed integer

Single – 32 bit floating-point number

UInt16 – 16 bit unsigned integer

UInt32 – 32 bit unsigned integer

UInt64 – 64-bit unsigned integer


Declaring Variables

To declare a variable use:


Dim [var_name] as [type]

Dim strName as String

Dim intAge as Integer

Assigning a value to a variable

You can assign a value to a variable using the “=” sign.


Dim strLastName as string =”McDonald”



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