XPClassInfo Class

Serves as a base for classes that provide metadata information for a class.

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 abstract class XPClassInfo :
    XPTypeInfo,
    IXPClassInfoProvider,
    IXPDictionaryProvider

VB.NET

Public MustInherit Class XPClassInfo
    Inherits XPTypeInfo
    Implements IXPClassInfoProvider,
               IXPDictionaryProvider

Related API Members

The following members return XPClassInfo objects:

Show 41 links

• ObjectsByKeyQuery.ClassInfo
• ObjectsQuery.ClassInfo
• PersistentBase.ClassInfo
• ReflectionClassInfo.BaseClass
• ReflectionDictionary.QueryClassInfo(String, String)
• ReflectionDictionary.QueryClassInfo(Type)
• SchemaInitEventArgs.Table
• Session.GetClassInfo(Object)
• Session.GetClassInfo(String, String)
• Session.GetClassInfo(Type)
• Session.GetClassInfo<ClassType>()
• XPBaseCollection.GetObjectClassInfo()
• XPBaseCollection.GetRealFetchClassInfo()
• XPBindingSource.ObjectClassInfo
• XPClassInfo.BaseClass
• XPClassInfo.IdClass
• XPClassInfo.PersistentBaseClass
• XPCollection.GetObjectClassInfo()
• XPCollection.ObjectClassInfo
• XPCollection<T>.GetObjectClassInfo()
• XPCursor.ObjectClassInfo
• XPCustomMemberInfo.ReferenceType
• XPDataObjectClassInfo.BaseClass
• XPDictionary.CreateClass(String, Attribute[])
• XPDictionary.CreateClass(XPClassInfo, String, Attribute[])
• XPDictionary.GetClassInfo(Object)
• XPDictionary.GetClassInfo(String, String)
• XPDictionary.GetClassInfo(Type)
• XPDictionary.QueryClassInfo(Object)
• XPDictionary.QueryClassInfo(String, String)
• XPDictionary.QueryClassInfo(Type)
• XPMemberInfo.CollectionElementType
• XPMemberInfo.GetMappingClass(XPClassInfo)
• XPMemberInfo.Owner
• XPMemberInfo.ReferenceType
• XPObjectSource.EntityType
• XPObjectType.GetClassInfo()
• XPObjectType.TypeClassInfo
• XPServerCollectionSource.ObjectClassInfo
• XPServerModeView.ObjectClassInfo
• XPView.ObjectClassInfo

Example

The following sample code shows how to create custom fields using the XPClassInfo.CreateMember method.

C#

using DevExpress.Xpo;
using DevExpress.Xpo.Metadata;
// ...

XPClassInfo customerClassInfo = Session.DefaultSession.GetClassInfo(typeof(Customer));
customerClassInfo.CreateMember("Name", typeof(string));
customerClassInfo.CreateMember("CompanyName", typeof(string));
// Set the nonPersistent parameter to true for collection properties
customerClassInfo.CreateMember("Orders", typeof(XPCollection), true, 
    new AssociationAttribute("CustomerOrders", typeof(Order)), new AggregatedAttribute());

VB.NET

Imports DevExpress.Xpo
Imports DevExpress.Xpo.Metadata
' ...

Dim customerClassInfo As XPClassInfo = Session.DefaultSession.GetClassInfo(GetType(Customer))
customerClassInfo.CreateMember("Name", GetType(String))
customerClassInfo.CreateMember("CompanyName", GetType(String))
' Set the nonPersistent parameter to True for collection properties
customerClassInfo.CreateMember("Orders", GetType(XPCollection), True, _
    New AssociationAttribute("CustomerOrders", GetType(Order)), New AggregatedAttribute())

Inheritance

Object

XPTypeInfo

XPClassInfo

ReflectionClassInfo

XPDataObjectClassInfo