public void OrderBy_AddSortExpressionValidation()
{
var(table, one, two, three) = InstantiateTable();
EnumerableRowCollection <DataRow> source = table.Cast <DataRow>();
var ordered = source.OrderBy(row => int.Parse((string)row.ItemArray[0]));
Assert.Equal(new DataRow[] { one, two, three }, ordered);
DataRow zero = table.Rows.Add(0);
var compared = source.OrderBy((row => row), new TestDataRowComparer <DataRow>());
Assert.Equal(new DataRow[] { zero, one, two, three }, compared);
}
/// <summary>
/// LINQ's OrderBy operator for generic EnumerableRowCollection.
/// </summary>
public static OrderedEnumerableRowCollection <TRow> OrderBy <TRow, TKey>(this TypedTableBase <TRow> source, Func <TRow, TKey> keySelector) where TRow : DataRow
{
DataSetUtil.CheckArgumentNull(nameof(source), "source");
EnumerableRowCollection <TRow> erc = new EnumerableRowCollection <TRow>(source);
return(erc.OrderBy(keySelector));
}
/// <summary>
/// LINQ's OrderBy operator for generic EnumerableRowCollection.
/// </summary>
public static OrderedEnumerableRowCollection <TRow> OrderBy <TRow, TKey>(
this TypedTableBase <TRow> source,
Func <TRow, TKey> keySelector,
IComparer <TKey> comparer) where TRow : DataRow
{
DataSetUtil.CheckArgumentNull(source, "source");
EnumerableRowCollection <TRow> erc = new EnumerableRowCollection <TRow>((DataTable)source);
return(erc.OrderBy <TRow, TKey>(keySelector, comparer));
}
