DataRelation.ParentKeyConstraint 속성

정의

네임스페이스:

System.Data

어셈블리:

System.Data.Common.dll

Source:

DataRelation.cs

UniqueConstraint의 부모 열에 있는 값을 고유하게 하는 DataRelation를 가져옵니다.

public:
 virtual property System::Data::UniqueConstraint ^ ParentKeyConstraint { System::Data::UniqueConstraint ^ get(); };

public virtual System.Data.UniqueConstraint? ParentKeyConstraint { get; }

member this.ParentKeyConstraint : System.Data.UniqueConstraint

Public Overridable ReadOnly Property ParentKeyConstraint As UniqueConstraint

속성 값

UniqueConstraint

부모 열의 값을 고유하게 하는 UniqueConstraint입니다.

예제

다음 예제에서는 개체의 를 DataRelation 가져옵니다ParentKeyConstraint.

Private Sub GetParentKeyConstraint()
    ' Get a DataRelation from a DataSet.
    Dim relation As DataRelation = _
        DataSet1.Relations("CustomerOrders")

    ' Get the relations parent key constraint.
    Dim constraint As UniqueConstraint = _
        relation.ParentKeyConstraint

    ' Get the constraint's DataColumns
    Dim constraintColumns() As DataColumn
    constraintColumns = constraint.Columns

    ' Print the column names.
    Dim i As Integer
    For i = 0 to constraintColumns.GetUpperBound(0)
       Console.WriteLine(constraintColumns(i).ColumnName.ToString())
    Next i
End Sub

추가 정보

• ChildKeyConstraint
• UniqueConstraint