DataTable.ParentRelations Property
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Gets the collection of parent relations for this 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)]
[System.Data.DataSysDescription("DataTableParentRelationsDescr")]
public System.Data.DataRelationCollection ParentRelations { get; }[<System.ComponentModel.Browsable(false)>]
member this.ParentRelations : System.Data.DataRelationCollection[<System.ComponentModel.Browsable(false)>]
[<System.Data.DataSysDescription("DataTableParentRelationsDescr")>]
member this.ParentRelations : System.Data.DataRelationCollectionPublic ReadOnly Property ParentRelations As DataRelationCollectionA DataRelationCollection that contains the parent relations for the table. An empty collection is returned if no DataRelation objects exist.
- Attributes
The following example uses the ParentRelations property to return each parent DataRelation in a DataTable. Each relation is then used as an argument in the GetParentRows method of the DataRow to return an array of rows. The value of each column in the row is then printed.
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
| Termék | Verziók |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
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