Control Flow in Visual Basic


Updated: July 20, 2015

For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

Left unregulated, a program proceeds through its statements from beginning to end. Some very simple programs can be written with only this unidirectional flow. However, much of the power and utility of any programming language comes from the ability to change execution order with control statements and loops.

Control structures allow you to regulate the flow of your program's execution. Using control structures, you can write Visual Basic code that makes decisions or that repeats actions. Other control structures let you guarantee disposal of a resource or run a series of statements on the same object reference.

Decision Structures
Describes control structures used for branching.

Loop Structures
Discusses control structures used to repeat processes.

Other Control Structures
Describes control structures used for resource disposal and object access.

Nested Control Structures
Covers control structures inside other control structures.

Control Flow Summary
Provides links to language reference pages on this subject.