Switch Case

A SwitchCase statement allows you to execute one of the predefined case scopes, based on evaluated value of the Condition expression. Each case scope defines a test for the condition value, and the first case where the test is passed, i.e. evaluates to True, gets executed.

The default case scope is executed if no other case test passes.

Define variables

Process variables are often used in switch case expressions.

To define a new static variable, select a process routine. In Routine Properties, click Add new variables drop-down menu, and then select the type. New variable appears in panel, which name and value can be edited. Change only the name and use Assign statement to define its value.

 

Switch Condition

Select the switch case statement and define Condition expression. The calculated value of the expression is compared against case conditions. Both static and runtime variables can be used in the expression.

 

Add a Case

To add a new case, point to switch statement in a process routine, then right-click and select Add case.

 

Case Condition

Select a case and define the CaseCondition property value. It is a string property that is parsed into a comparison operator and the actual value expression.

The syntax is

<operator> <actual_value_expression>

If the operator is omitted, the equals operator (==) is used.

An expression can have multiple operators and variables. See operator precedence.

The actual value expression can be either a constant value or an expression consisting of variables.

Default case

One of the cases may be specified as the default case, which will be executed if no other case condition is accepted. This is done by typing "Default" into the case condition (not case sensitive).

Properties

Name	Description
IsEnabled	Turns on/off the execution of this statement.
Condition	Defines a comparison expression to evaluate each case against. See also Process Statement Expressions.
CaseCondition	Defines a comparison expression to evaluate against the Condition.