XPMemberInfo.IsAliased Property

Gets whether a PersistentAliasAttribute attribute is applied to the property.

Namespace: DevExpress.Xpo.Metadata

Assembly: DevExpress.Xpo.v24.1.dll

NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo

NuGet Package: DevExpress.Xpo

Declaration

C#

public bool IsAliased { get; }

VB.NET

Public ReadOnly Property IsAliased As Boolean

Property Value

Type	Description
Boolean	true if the member has the PersistentAliasAttribute attribute; otherwise, false.

Example

The following example shows how to use the PersistentAliasAttribute to implement a public read-only property exposing a value of the private persistent property. The expression passed in the PersistentAliasAttribute class constructor specifies the name of the field which stores the value at runtime. The field is decorated with the PersistentAttribute whose PersistentAttribute.MapTo property holds the name of the data store column where the field’s value is stored.

C#

using DevExpress.Xpo;

// ...
[Persistent("DefaultAddress")]
private string mDefaultAddress;

[PersistentAlias(nameof(mDefaultAddress))]
public string DefaultAddress {
    get {
        return mDefaultAddress;
    }
}

VB.NET

Imports DevExpress.Xpo

' ...
<Persistent("DefaultAddress")> _
Private mDefaultAddress As String

<PersistentAlias(NameOf(mDefaultAddress))> _
Public ReadOnly Property DefaultAddress() As String
   Get
      Return mDefaultAddress
   End Get
End Property

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IsAliased property.

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#

XPO_how-to-dynamically-create-a-read-only-calculated-persistent-alias-property-e3473/CS/ConsoleApplication17/Program.cs#L34

XPMemberInfo mi = xpc[0].ClassInfo.FindMember("DisplayName");
System.Diagnostics.Debug.Assert(mi!= null && mi.IsReadOnly && mi.IsAliased);
System.Diagnostics.Debug.Assert(object.Equals(mi.GetValue(xpc[0]), "bbb ([e-mail]) managed by aaa"));

XPO_how-to-implement-odata4-service-with-xpo/CS/ODataService/App_Start/WebApiConfig.cs#L81

foreach(XPMemberInfo mi in classInfo.Members) {
    if(mi.IsAliased) {
        string aliasedExpr = ((PersistentAliasAttribute)mi.GetAttributeInfo(typeof(PersistentAliasAttribute))).AliasExpression;