Linq et datableRésolu

Question

Bonjour le Forum,
Je dispose d'un datatable qui contient

TRIGRAMME	Host		POLLER
ACC		server1		FR3PRD02
ACC		server2		FR3PRD01
AS0		server3		FR3PRD01
ASU		server8		FR3PRD01
ASU		server30	FR3PRD01
AXO		server50	FR3PRD02
Pour afficher

Nombre de host par poller
FR3PRD01	4
FR3PRD02	2
j'utilse        Me.RichTextBoxDownload.Text += "Nombre de host par poller" & Environment.NewLine
        Dim querypoller = From row In hosts 'hosts est le datatable
           Group row By poller = row.Field(Of String)("POLLER") Into PollerGroup = Group
           Select New With {
               Key poller,
                   .host = PollerGroup.Select(Function(r) r.Field(Of String)("Host")).Distinct
               }

Dim listpoller = New List(Of Tuple(Of String, Integer))
        For Each x In querypoller
            listpoller.Add(New Tuple(Of String, Integer) _
                           (x.poller.ToString, x.host.Count))
        Next
        listpoller.Sort()

Dim result = From v In listpoller
                     Group v By v.Item1 Into TupleGroup = Group

For Each value In result
            For Each item In value.TupleGroup
                Me.RichTextBoxDownload.Text += value.Item1 & Convert.ToChar(Keys.Tab) & _
                            item.Item2 & Environment.NewLine

Next
        NextPar contre, je n'arrive pas à afficherFR3PRD01	4
		ACC	1
		AS0	1
		ASU	2
FR3PRD02	2
		ACC	1
		AXO	1Auriez-vous une idée pour la requête à utiliser ?
Un host ne peut être assigné qu'à un poller.
Merci de vos suggestions.
jean-marc

Whismeril · Answer

Salut,
j'ai pas de datatable sous la main, j'ai fait avec une liste.

Public Class JMO2
    Public Property Code3Caracteres() As String

Public Property Serveur() As String

Public Property Poller() As String
End Class

Public Class HostParPoller
    Public Property Host() As String

Public Property Nombre() As Integer
End Class

Public Class RequetteJMO
    Public Property Poller() As String

Public Property Nombre() As Integer

Public Property Hosts() As List(Of HostParPoller)
End Class

Dim lesDonneesJMO As New List(Of JMO2)() From {
            New JMO2 With {.Code3Caracteres = "ACC", .Serveur = "server1", .Poller = "FR3PRD02"},
            New JMO2 With {.Code3Caracteres = "ACC", .Serveur = "server2", .Poller = "FR3PRD01"},
            New JMO2 With {.Code3Caracteres = "AS0", .Serveur = "server3", .Poller = "FR3PRD01"},
            New JMO2 With {.Code3Caracteres = "ASU", .Serveur = "server8", .Poller = "FR3PRD01"},
            New JMO2 With {.Code3Caracteres = "ASU", .Serveur = "server30", .Poller = "FR3PRD01"},
            New JMO2 With {.Code3Caracteres = "AXO", .Serveur = "server50", .Poller = "FR3PRD02"}}

'nombre de host par poller
        Dim toto = (
            From y In lesDonneesJMO.GroupBy(Function(x) x.Poller)
            Select New RequetteJMO With
                   {
                       .Poller = y.Key,
                       .Nombre = y.Count(),
                       .Hosts = y.GroupBy(Function(z) z.Code3Caracteres).Select(Function(w) New HostParPoller With
                                                                                            {
                                                                                                .Host = w.Key,
                                                                                                .Nombre = w.Count()
                                                                                            }).ToList()
                   }).ToList()

Whismeril · Answer

De rien

Linq et datable

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