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Boxed Expressions can be used to define expressions and reuse them across logic documents.
You can add different types of expressions as boxed expressions.
- Formula: To write formulas
- Literal: To assign constants and literal formulas (without any parameters)
- Function: To assign a function with a list of expressions
- Native Method: To assign .NET native methods
Formula
To store expressions with parameters.
Properties
- Name: Name of the expression
- Expression: The expression you want to assign to the name
- Parameters: The parameters used in the expression
Literal
To store constant values or expressions that only contain literal values.
Properties
- Name: Name of the expression
- Expression: The expression you want to assign to the name
Function
To store a set of expressions as one function.
Properties
- Name: Name of the expression
- Expressions: The list of expressions you want to assign to the name
- Parameters: The parameters used in the expressions
The expressions in a function will be executed according to the given order of expressions and the last expression’s output will be returned as the function’s output.
Native Methods
To use the native methods available in .NET Framework.
You can add methods from the list of available functions in .NET Framework 4.7.
Properties
- Name: Name of the expression
- Type: Type of the native method
- Method Signature: The default method signature
In the above figure, we use the method DateTime.DaysInMonth(Int32, Int32) .
Sample Project
The attached project (Boxed Expressions.zip) includes a set of examples for each expression type.