Introduction

General

Expressions are formulas that can dynamically evaluate values at runtime; they allow to return static or dynamically calculated values.

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Example: Let's suppose you design a Report and you use a Filter Datasource Field Action to filter a field. The values to which you filter the field are expressions which can be used to either return constant values or dynamic values (e.g. the current year, the previous year etc.).

Syntax

Mail & Deploy expressions are written in  Visual Basic .NET; however, there are many additional functions provided by Mail & Deploy which are not part of the standard Visual Basic .NET language.

Expression Fields

You can enter expressions in all expression fields which can be identified in the following way:

Web User Interface

An expression field in the web user interface (accessed by your web browser) looks like this:

Expression Editor

The  button in the expression editor can be used to insert a Placeholder or other value into the expression.
Report Designer
Expression fields in the Report Designer look like this:

Expression Field in the Property Grid

Another form of expression field in the designer looks like this:

Expression Field

By clicking the three-dot browse button you can open the expression editor for that expression.

Expression Editor