VB.NET Linq 특정 컬럼 하나만 중복제거 후 Array로 저장하기, vb.net remove duplicate to array for one column

Dim columns = From row In onebon_dt Group row By steps = row("Step").ToString() Into Group Where Group.Count > 0 Select steps Dim query = onebon_dt.AsEnumerable().GroupBy( Function(l) New With { Key .Item = l.Field(Of String)("Item") }).Select( Function(g) g.FirstOrDefault Dim row = output_dt.NewRow() row("Item") = g.Key.Item Return row End Function).CopyToDataTable()

2020.03.20