DataSet.Relations Property
.NET Framework 2.0
Get the collection of relations that link tables and allow navigation from parent tables to child tables.
Namespace: System.Data
Assembly: System.Data (in system.data.dll)
Assembly: System.Data (in system.data.dll)
/** @property */ public DataRelationCollection get_Relations ()
public function get Relations () : DataRelationCollection
Property Value
A DataRelationCollection that contains a collection of DataRelation objects. An empty collection is returned if no DataRelation objects exist.The following example prints the column name of all child tables through the Relations property.
Private Sub PrintChildRelationRows() ' Declare variable to hold the row values. Dim rowValues As String Dim dataSet As DataSet ' Get the DataSet of a DataGrid that is displaying data ' of at least two tables. Dim table As DataTable = CType(DataGrid1.DataSource, DataTable) ' Navigate using the Relations. Dim relation As DataRelation Dim row As DataRow Dim column As DataColumn ' Print the names of each column in each table. For Each relation In dataSet.Relations For Each column in relation.ChildTable.Columns rowValues &= column.ColumnName & " " Next Next ' Display results. Console.WriteLine(rowValues) End Sub
Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Community Additions
ADD
Show: