I would like to replace all null values with DBnull in a data table

[ppr (Peter Preuss)]

similar to:

LINQ query to update(replace)datatable in uipath

@Rachel7 this is maybe a too quick shot as it replace any space in any column to NA and returns a datatable. But you can give a try (From r In dtData.AsEnumerable Select ia = r.ItemArray.toList Select ic = ia.ConvertAll(Function (e) e.ToString.Trim.Replace(" ","NA")).toArray() Select dtCorrected.Rows.Add(ic)).CopyToDataTable() NEW VERSION, simplified: (From r In dtData.AsEnumerable let ra = r.ItemArray.Select(Function (x) x.ToString.Trim.Replace(" ","NA")).toArray() Select dtCorrected.Rows.…

dtCorrected = OriginDataTableVar.Clone()

dtCorrected =

(From r In dtData.AsEnumerable
let ra = r.ItemArray.Select(Function (x) If(isNothing(x) OrElse String.IsNullOrEmpty(x.ToString.Trim), DBNull.Value, x)).toArray
Select dtCorrected.Rows.Add(ra)).CopyToDataTable()