public new void ToString()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
dRel = new DataRelation(null, dtParent.Columns[0], dtChild.Columns[0]);
// ToString 1
Assert.Equal(string.Empty, dRel.ToString());
ds.Relations.Add(dRel);
// ToString 2
Assert.Equal("Relation1", dRel.ToString());
dRel.RelationName = "myRelation";
// ToString 3
Assert.Equal("myRelation", dRel.ToString());
}