AssociationAttribute Class
Identifies the end of an association that is involved in an object relationship.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v20.2.dll
Declaration
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, Inherited = true)]
public sealed class AssociationAttribute :
Attribute<AttributeUsage(AttributeTargets.Property Or AttributeTargets.Field, Inherited:=True)>
Public NotInheritable Class AssociationAttribute
Inherits Attribute[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, Inherited = true)]
public sealed class AssociationAttribute :
Attribute<AttributeUsage(AttributeTargets.Field Or AttributeTargets.Property, Inherited:=True)>
Public NotInheritable Class AssociationAttribute
Inherits AttributeRemarks
Apply this attribute to both properties at the ends of the association, specifying an object relationship.
Examples
In the following sample code, the Location class might contain several Departments and each Department can in turn span several Locations.
using DevExpress.Xpo;
// ...
public class Location : XPObject {
public string Name {
get { return fName; }
set { SetPropertyValue(nameof(Name), ref fName, value); }
}
string fName;
[Association("Locations-Departments")]
public XPCollection<Department> Departments {
get { return GetCollection<Department>(nameof(Departments)); }
}
}
public class Department : XPObject {
public string Name {
get { return fName; }
set { SetPropertyValue(nameof(Name), ref fName, value); }
}
string fName;
[Association("Locations-Departments")]
public XPCollection<Location> Locations {
get { return GetCollection<Location>(nameof(Locations)); }
}
}
See Also
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