System.Activities
System.Activities.Statements
System.Activities.Expressions
System.Activities.Validation
System.Activities.XamlIntegration
Microsoft.VisualBasic
Microsoft.VisualBasic.Activities
System
System.Collections
System.Collections.Generic
System.Data
System.Diagnostics
System.Drawing
System.IO
System.Linq
System.Net.Mail
System.Xml
System.Xml.Linq
UiPath.Core
UiPath.Core.Activities
System.Windows.Markup
System.ComponentModel
System.Runtime.Serialization
System.Xml.Serialization
UiPath.Excel
UiPath.Excel.Activities
System.Reflection
System.Activities
Microsoft.VisualBasic
System.Private.CoreLib
System.Data
System.Data.DataSetExtensions
System
System.Drawing
System.Core
System.Xml
System.Xml.Linq
System.Xaml
UiPath.System.Activities
UiPath.UiAutomation.Activities
System.ComponentModel.TypeConverter
System.ComponentModel.Primitives
System.ComponentModel
System.ObjectModel
System.ComponentModel.EventBasedAsync
System.Runtime.Serialization.Formatters
System.Runtime.Serialization.Primitives
System.Private.ServiceModel
System.Private.DataContractSerialization
System.Private.Xml
UiPath.Excel
UiPath.Excel.Activities.Design
UiPath.Excel.Activities
System.Data.Common
True
["fr"]
[dtout]
[(From r In dt.AsEnumerable
Group r By a=r("fr").ToString,b=r("to").ToString Into grp=Group
Select grp.OrderByDescending(Function(x) CDate(x("Valid fr").ToString)).first()).CopyToDataTable]