DataTable.ParentRelations Properti

Definisi

Ruang nama:

System.Data

Rakitan:

System.Data.Common.dll

Sumber:

DataTable.cs

Mendapatkan koleksi hubungan induk untuk ini DataTable.

public:
 property System::Data::DataRelationCollection ^ ParentRelations { System::Data::DataRelationCollection ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Data.DataRelationCollection ParentRelations { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ParentRelations : System.Data.DataRelationCollection

Public ReadOnly Property ParentRelations As DataRelationCollection

Nilai Properti

DataRelationCollection

DataRelationCollection yang berisi hubungan induk untuk tabel. Koleksi kosong dikembalikan jika tidak ada DataRelation objek.

Atribut

BrowsableAttribute

Contoh

Contoh berikut menggunakan ParentRelations properti untuk mengembalikan setiap induk DataRelation dalam DataTable. Setiap relasi kemudian digunakan sebagai argumen dalam GetParentRows metode DataRow untuk mengembalikan array baris. Nilai setiap kolom dalam baris kemudian dicetak.

private void GetChildRowsFromDataRelation(DataTable table)
{
    DataRow[] rowArray;
    foreach(DataRelation relation in table.ParentRelations)
    {
        foreach(DataRow row in table.Rows)
        {
            rowArray = row.GetParentRows(relation);
            // Print values of rows.
            for(int i = 0; i < rowArray.Length; i++)
            {
                foreach(DataColumn column in table.Columns)
                {
                    Console.WriteLine(rowArray[i][column]);
                }
            }
        }
    }
}

Private Sub GetChildRowsFromDataRelation(table As DataTable)
    Dim rowArray() As DataRow
    Dim relation As DataRelation, row As DataRow
    Dim column As DataColumn, i As Integer     
    For Each relation In  table.ParentRelations
        For Each row In  table.Rows
            rowArray = row.GetParentRows(relation)
            ' Print values of rows.             
            For i = 0 To rowArray.Length - 1                 
                For Each column In  table.Columns
                    Console.WriteLine(rowArray(i)(column))
                Next column
            Next i
        Next row
    Next relation
End Sub

Lihat juga

• ChildRelations
• DataRelation
• DataSet
• Relations
• DataTables