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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]);
                }
            }
        }
    }
}

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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