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DataRow.GetParentRows Method (DataRelation, DataRowVersion)

Gets the parent rows of a DataRow using the specified DataRelation, and DataRowVersion.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

public DataRow[] GetParentRows (
	DataRelation relation,
	DataRowVersion version
)
public DataRow[] GetParentRows (
	DataRelation relation, 
	DataRowVersion version
)
public function GetParentRows (
	relation : DataRelation, 
	version : DataRowVersion
) : DataRow[]
Not applicable.

Parameters

relation

The DataRelation to use.

version

One of the DataRowVersion values specifying the version of the data to get.

Return Value

An array of DataRow objects or an array of length zero.

Exception typeCondition

ArgumentException

The DataRelation does not belong to this row's DataSet.

ArgumentNullException

The row is a null reference (Nothing in Visual Basic).

InvalidConstraintException

The relation's child table is not the table the row belongs to.

RowNotInTableException

The row does not belong to a DataTable.

VersionNotFoundException

The row does not have the requested DataRowVersion.

In a DataSet, the collection of all parent DataRelation objects for the data set is returned by the GetParentRows method.

The DataTable also contains a collection of DataRelation objects, returned by the ParentRelations property.

Use the HasVersion property to determine whether the DataRowVersion that you want exists.

The following example uses the GetParentRows to return the child DataRow objects for every child DataRelation in a DataTable. The value of each column in the row is then printed.

Private Sub GetChildRowsFromDataRelation(table As DataTable, ver As DataRowVersion)
    Dim relation As DataRelation
    Dim arrRows() As DataRow
    Dim row As DataRow
    Dim i As Integer
    Dim column As DataColumn 
 
    For Each relation In table.ParentRelations
      For Each row In table.Rows
          arrRows = row.GetParentRows(relation, ver)
          ' Print values of rows.
          For i = 0 To arrRows.GetUpperBound(0)
             For Each column in table.Columns
                Console.WriteLine(arrRows(i)(column.ColumnName))
             Next column
          Next i
       Next row
    Next relation
End Sub

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0
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