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DataRow.GetParentRow Method (DataRelation)

Gets the parent row of a DataRow using the specified DataRelation.

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

public DataRow GetParentRow(
	DataRelation relation
)

Parameters

relation
Type: System.Data.DataRelation
The DataRelation to use.

Return Value

Type: System.Data.DataRow
The parent DataRow of the current row.

ExceptionCondition
ArgumentNullException

The relation does not belong to the DataTable.

The row is null.

InvalidConstraintException

This row does not belong to the child table of the DataRelation object.

RowNotInTableException

The row does not belong to a table.

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.

The following example uses the GetParentRow 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 void GetParentRowForTable(DataTable thisTable, 
    DataRelation relation)
{
    if(thisTable ==null){return;}
    // For each row in the table, print column 1 
    // of the parent DataRow.
    DataRow parentRow;
    foreach(DataRow row in thisTable.Rows)
    {
        parentRow = row.GetParentRow(relation);
        Console.Write("\table child row: " + row[1]);
        Console.Write("\table parent row: " + parentRow[1]+ "\n");
    }
}

private void CallGetParentRowForTable()
{
    // An example of calling the function.
    DataTable thisTable = DataSet1.Tables["Products"];
    DataRelation relation = thisTable.ParentRelations[0];
    GetParentRowForTable(thisTable, relation);
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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