c# - Difference between DataView.Sort and DataTable.OrderBy().AsDataView()? -

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i have datagridview bound datatable contains column of custom types need sort by. custom type (mycustomtype) implements icomparable<mycustomtype> how wanted sorting work.

i tried 2 methods create dataview use grid's data source:

mydatatable dt = new mydatatable(); dataview dv = new dataview(dt); dv.sort = "mycustomfield";

this did not work - "almost" worked, rows not sorted correctly.

second method:

mydatatable dt = new mydatatable(); dataview dv = dt.orderby(row => row.mycustomfield).asdataview();

this seems doing want. question is, what's difference between these 2 methods? possible dataview.sort not using icomparable<t> implementation, , linq-enabled dataview is? why case?

furthermore, know relative performance of non-linq-enabled , linq-enabled dataviews? seems if there isn't huge performance hit, there's no longer reason use non-linq-enabled version.

when call .sort on dataview, sorts particular instance of object. second method creates brand new object , assigns dv variable. can critical difference.

edit: not second method specifically, since you're not assigning, re-assigning. if had existing dataview, re-assigned using orderby method, you'd have scenario suggested.

sorry, wasn't clear should have been.


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