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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
)

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: 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 null.

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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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