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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);
}

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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