public System.Data.DataView CreateChildView(DataRelation relation)
{
if ((relation == null) || (relation.ParentKey.Table != this.DataView.Table))
{
throw ExceptionBuilder.CreateChildView();
}
int record = this.GetRecord();
object[] keyValues = relation.ParentKey.GetKeyValues(record);
RelatedView view = new RelatedView(relation.ChildColumnsReference, keyValues);
view.SetIndex("", DataViewRowState.CurrentRows, null);
view.SetDataViewManager(this.DataView.DataViewManager);
return(view);
}
/// <summary>
/// Returns a <see cref="System.Data.DataView"/>
/// for the child <see cref="System.Data.DataTable"/>
/// with the specified <see cref="System.Data.DataRelation"/>.
/// </summary>
/// <param name="relation">Specified <see cref="System.Data.DataRelation"/>.</param>
/// <exception cref="ArgumentException">null or mismatch between <paramref name="relation"/> and <see cref="System.Data.DataView.get_Table"/>.</exception>
public DataView CreateChildView(DataRelation relation, bool followParent)
{
if (relation == null || relation.ParentKey.Table != DataView.Table)
{
throw ExceptionBuilder.CreateChildView();
}
RelatedView childView;
if (!followParent)
{
int record = GetRecord();
object[] values = relation.ParentKey.GetKeyValues(record);
childView = new RelatedView(relation.ChildColumnsReference, values);
}
else
{
childView = new RelatedView(this, relation.ParentKey, relation.ChildColumnsReference);
}
childView.SetIndex("", DataViewRowState.CurrentRows, null); // finish construction via RelatedView.SetIndex
childView.SetDataViewManager(DataView.DataViewManager);
return(childView);
}
