corelibraries-devexpress-dot-dataaccess-dot-datafederation-4549cfdf.md
A collection of the FederationMasterDetailInfo objects that define master-detail relationships.
Namespace : DevExpress.DataAccess.DataFederation
Assembly : DevExpress.DataAccess.v25.2.dll
NuGet Package : DevExpress.DataAccess
public sealed class MasterDetailInfoCollection :
List<FederationMasterDetailInfo>
Public NotInheritable Class MasterDetailInfoCollection
Inherits List(Of FederationMasterDetailInfo)
The following members return MasterDetailInfoCollection objects:
The FederationDataSource.Relations property provides access to a MasterDetailInfoCollection instance.
To create a master-detail relationship between two queries, add an instance of the FederationMasterDetailInfo object to the Relations collection:
Note
The complete sample project How to Create a Federated Data Source at Runtime is available in the DevExpress Examples repository.
using DevExpress.DataAccess.DataFederation;
// ...
federation.Relations.Add(new FederationMasterDetailInfo() {
MasterQueryName = "Orders",
DetailQueryName = "OrderDetail",
KeyColumns = {
new FederationRelationColumnInfo(){
ParentKeyColumn="OrderID",
NestedKeyColumn ="OrderID",
ConditionOperator= FederationConditionType.Equal
}
}
}
Imports DevExpress.DataAccess.DataFederation
' ...
federation.Relations.Add(
New FederationMasterDetailInfo("Orders",
"OrderDetail",
New FederationRelationColumnInfo() With
{.ParentKeyColumn = "OrderID",
.NestedKeyColumn = "OrderID",
.ConditionOperator = FederationConditionType.Equal}))
Object List<FederationMasterDetailInfo> MasterDetailInfoCollection
See Also