Common Type System

The common type system defines how types are declared, used, and managed in the common language runtime. Each of the data types used in Visual Basic .NET correspond directly to a type defined in the common type system.Common Type System

A value-type variable directly contains its data. Each value-type variable has its own copy of data, so operations on one value-type variable cannot affect another variable.

A reference-type variable contains a reference or pointer to the value of an object. Two reference-type variables can reference the same object, so operations on one reference-type variable can affect the object referenced by another reference-type variable.

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