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DataRow.GetParentRow Method (String, DataRowVersion)

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

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

public DataRow GetParentRow(
	string relationName,
	DataRowVersion version
)

Parameters

relationName
Type: System.String
The RelationName of a DataRelation.
version
Type: System.Data.DataRowVersion
One of the DataRowVersion values.

Return Value

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

ExceptionCondition
ArgumentException

The relation and row do not belong to the same table.

ArgumentNullException

The relation is null.

RowNotInTableException

The row does not belong to the table.

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 GetParentRow to print a value from each parent row of each DataRow in a DataTable.


private void GetParentRowForTable(DataTable thisTable, 
    string relation, DataRowVersion version)
{
    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, version);
        Console.Write("\t child row: " + row[1]);
        Console.Write("\t parent row: " + parentRow[1]+ "\n");
    }
}

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

    // Print only original versions of parent rows.
    GetParentRowForTable(thisTable, relation.RelationName,
        DataRowVersion.Original);
}


.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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