Generic linq contains

User 4154930

Hi, i have this

Public Shared Function Filtro(ByVal Company As List(Of Entities.Company), ByVal V As String) As List(Of Entities.Company)
Try

        Dim S As New Entities.Empresa
        Dim listS As New List(Of Entities.Empresa)

        Dim lfilter = From comp In Company \_
                     Where comp.Name.ToLower.Contains(LCase(V))
                     Select comp

        For Each item In lfilter
            S = New Entities.Company
            S.ID = item.ID
            S.Name= item.Name
            listS.Add(S)
        Next

        Return listS

    Catch ex As Exception
        Throw ex
    End Try

this work fine but i have create one of this for everyone entity in my proyect, example one from company, one from employee, exist some generic metod to send the entity and create the filter? sorry my english is poor thanks

nlarson11

You could use an interface to generically check the property that all the entities share. So you could do something like this:

Public Class Company
Implements IFilter

Public Property Name As String Implements IFilter.Name
Public Property ID As String

End Class

Public Class Employee
Implements IFilter

Public Property Name As String Implements IFilter.Name
Public Property ID As String

End Class

Public Interface IFilter
Property Name As String
End Interface

Public Class EntityFilter(Of t)
Public Function Filter(ByVal entity As List(Of t), ByVal FilterString As String) As List(Of t)
FilterString = FilterString.ToLower

    Return (From e As t In entity Where CType(e,IFilter).Name.ToLower.Contains(FilterString)).ToList

    '' OR ''

    Return entity.Where(Function(e) CType(e, IFilter).Name.ToLower.Contains(FilterString)).ToList
End Function

End Class

'Never argue with an idiot; they'll drag you down to their level and beat you with experience.' ~ anonymous

User 4154930

Thanks, i will try, apologizes for the delay but i dont have internet until today thanks for you time.