Hi @Mahii
Welcome to uipath community
Try with this expression
DTInput1.AsEnumerable.Where(Function(x) x.Item(If(("Column Name").Contains(""),("Column Name"),If((“Column Name”).Contains("dd.MM.yyyy"),Datetime.ParseExact(("Column Name"),"dd.MM.yyyy",System.Globalization.CultureInfo.InvariantCulture).Tostring("MM/dd/yyyy"))))).CopyToDataTable
Regards
Gokul