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DataRow.GetChildRows Method (DataRelation)

Gets the child rows of this DataRow using the specified DataRelation.

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

public DataRow[] GetChildRows(
	DataRelation relation
)

Parameters

relation
Type: System.Data.DataRelation

The DataRelation to use.

Return Value

Type: System.Data.DataRow[]
An array of DataRow objects or an array of length zero.

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 this version of data.

The DataTable also contains a collection of DataRelation objects that is returned by the ChildRelations property.

The following example uses the GetChildRows 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 GetChildRowsFromDataRelation(DataTable table) 
{
    DataRow[] arrRows;  
    foreach(DataRelation relation in table.ChildRelations)
    {
        foreach(DataRow row in table.Rows)
        {
            arrRows = row.GetChildRows(relation);
            // Print values of rows. 
            for(int i = 0; i < arrRows.Length; i++)
            {
                foreach(DataColumn column in table.Columns)
                {
                    Console.WriteLine(arrRows[i][column]);
                }
            }
        }
    }
}

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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