CalculatedAttribute(String) Constructor

Initializes a new instance of the CalculatedAttribute class.

Namespace: DevExpress.ExpressApp.DC

Assembly: DevExpress.ExpressApp.v25.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public CalculatedAttribute(
    string expression
)

VB.NET

Public Sub New(
    expression As String
)

Parameters

Name	Type	Description
expression	String	A string expression used to calculate the CalculatedAttribute‘s target property value.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the CalculatedAttribute(String) constructor.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_generate-a-sequential-number-for-a-persistent-object-within-a-database-transaction/CS/XPO/Demo.Module/BusinessObjects/IDocument.cs#L12

public interface IDocument : IUserFriendlyIdDomainComponent {
    [Calculated("Concat('D',PadLeft(ToStr(SequentialNumber),6,'0'))")]
    string DocumentId { get; }

VB.NET

XAF_generate-a-sequential-number-for-a-persistent-object-within-a-database-transaction/VB/Demo.Module/BusinessObjects/IDocument.vb#L14

<Calculated("Concat('D',PadLeft(ToStr(SequentialNumber),6,'0'))")>
ReadOnly Property DocumentId() As String