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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:
array<DataRow^>^ GetParentRows(
	DataRelation^ relation, 
	DataRowVersion version
)

Parameters

relation
Type: System.Data::DataRelation

The DataRelation to use.

version
Type: System.Data::DataRowVersion

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

Return Value

Type: array<System.Data::DataRow>
An array of DataRow objects or an array of length zero.

ExceptionCondition
ArgumentException

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

ArgumentNullException

The row is nullptr.

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

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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