Imports C1.Win.C1TrueDBGrid
Imports System
Imports System.Data
Imports System.Data.SqlTypes
Imports System.Data.SqlClient

Public Class Form2
    Dim xvertragspartnernr As String = 2

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim dt As New DataTable
        dt = Me.Get_SubStruktur(0, 2, 1)
        Me.ComboBoxTree1.TreeView.Nodes.Clear()
        Me.ComboBoxTree1.TreeView.Nodes.Add("Test")
        Me.Update_Node(dt, Me.ComboBoxTree1.TreeView.Nodes(0), "Vertragspartner", 1)
        Me.ComboBoxTree1.TreeView.ExpandAll()
    End Sub


    ''' <summary>
    ''' Parent-Beziehung herstellen und Struktur abfüllen
    ''' </summary>
    ''' <param name="oSourceData"></param>
    ''' <param name="node"></param>
    ''' <remarks></remarks>
    Private Sub Update_Node(ByVal oSourceData As DataTable, ByRef node As TreeNode, ByVal type As String, ByVal Details As Integer)
        If Not (oSourceData Is Nothing) Then
            Dim oView As DataView = oSourceData.DefaultView
            Dim oTable As DataTable = oView.Table
            Dim oDS As DataSet = New DataSet()
            oDS.Tables.Add(oTable.Copy())

            If oDS.Relations.Contains("SelfRefenceRelation") = False Then
                oDS.Relations.Add("SelfRefenceRelation", _
                    oDS.Tables(0).Columns("Vertragselementnr"), _
                    oDS.Tables(0).Columns("Parentid"))
            End If
            oTable.Dispose()
            oTable = Nothing
            LoadNode(oDS, node, type, Details)
            oDS.Dispose()
            oDS = Nothing
        End If
    End Sub

    ''' <summary>
    ''' Tree aufbauen
    ''' </summary>
    ''' <param name="oDS">Input-Dataset</param>
    ''' <param name="oNode">Aktueller Node</param>
    ''' <param name="type">Type Vertragspartner oder Vertragstyp</param>
    ''' <remarks></remarks>
    Private Sub LoadNode(ByVal oDS As DataSet, ByRef oNode As TreeNode, ByVal type As String, ByVal Details As Integer)
        'Dim oTreeView As TreeView = New TreeView()
        Dim oDataRow As DataRow
        For Each oDataRow In oDS.Tables(0).Rows
            If Not oDataRow.IsNull("Parentid") Then
                If oDataRow.Item("Parentid") = 0 Then
                    'If oDataRow.IsNull("Parentid") Then
                    Dim oNode1 As New TreeNode()
                    oNode1.Text = oDataRow("Bezeichnung").ToString()
                    Select Case type
                        Case "Vertragspartner"
                            oNode1.Tag = New Treenode_Descriptor("Vertragstyp", oDataRow("vertragselementnr").ToString, xVertragspartnernr, oDataRow("vertragstypnr").ToString)
                            oNode1.ImageIndex = 1
                            oNode1.SelectedImageIndex = 1
                            oNode1.StateImageIndex = 1
                        Case "Vertragstyp"
                            If oDataRow("aktiv") = True Then
                                oNode1.Tag = New Treenode_Descriptor("Vertragspartner", oDataRow("vertragselementnr").ToString, xVertragspartnernr, oDataRow("vertragstypnr").ToString)
                                oNode1.ImageIndex = 0
                                oNode1.SelectedImageIndex = 0
                                oNode1.StateImageIndex = 0
                            Else
                                oNode1.Tag = New Treenode_Descriptor("Vertragspartner", oDataRow("vertragselementnr").ToString, xVertragspartnernr, oDataRow("vertragstypnr").ToString)
                                oNode1.ImageIndex = 4
                                oNode1.SelectedImageIndex = 4
                                oNode1.StateImageIndex = 4
                            End If
                    End Select
                    oNode.Nodes.Add(oNode1)
                    RecursivelyLoadNode(oDataRow, oNode1, type, Details)
                End If
            End If
        Next oDataRow
        oDS.Dispose()
        oDS = Nothing
    End Sub

    ''' <summary>
    ''' Child-Nodes hinzufügen
    ''' </summary>
    ''' <param name="oDataRow"></param>
    ''' <param name="oNode"></param>
    ''' <remarks></remarks>
    Private Sub RecursivelyLoadNode(ByVal oDataRow As DataRow, ByRef oNode As TreeNode, ByVal type As String, ByVal Details As Integer)
        Dim oChildRow As DataRow
        For Each oChildRow In oDataRow.GetChildRows("SelfRefenceRelation")
            Dim oChildNode As New TreeNode()
            oChildNode.Text = oChildRow("Bezeichnung").ToString()
            oChildNode.Tag = New Treenode_Descriptor("Vertragselement", oChildRow("Vertragselementnr").ToString(), xVertragspartnernr, oDataRow("vertragstypnr").ToString)
            oChildNode.ImageIndex = 2
            oChildNode.SelectedImageIndex = 2
            oChildNode.StateImageIndex = 2
            oNode.Nodes.Add(oChildNode)
            RecursivelyLoadNode(oChildRow, oChildNode, type, Details)
        Next oChildRow
    End Sub
    ''' <summary>
    ''' Laden der Substruktur
    ''' </summary>
    ''' <param name="Vertragspartnernr">Nummer des aktuellen Vertragspartners</param>
    ''' <returns></returns>
    ''' <remarks></remarks>
    Private Function Get_SubStruktur(ByVal vertragstypnr As Integer, ByVal Vertragspartnernr As Integer, ByVal Details_anzeigen As Integer) As DataTable
        Dim scmCmdToExecute As SqlCommand = New SqlCommand()
        Dim dtToReturn As DataTable = New DataTable()
        Dim sdaAdapter As SqlDataAdapter = New SqlDataAdapter(scmCmdToExecute)
        scmCmdToExecute.CommandText = "dbo.sp_vertragsuebersicht_get_struktur"
        scmCmdToExecute.CommandType = CommandType.StoredProcedure
        scmCmdToExecute.Connection = conn.scoDBConnection
        Try
            scmCmdToExecute.Parameters.Add(New SqlParameter("@vertragstypnr", SqlDbType.Int, 4, ParameterDirection.Input, True, 10, 0, "", DataRowVersion.Proposed, vertragstypnr))
            scmCmdToExecute.Parameters.Add(New SqlParameter("@vertragspartnernr", SqlDbType.Int, 4, ParameterDirection.Input, True, 10, 0, "", DataRowVersion.Proposed, Vertragspartnernr))
            scmCmdToExecute.Parameters.Add(New SqlParameter("@mitarbeiternr", SqlDbType.Int, 4, ParameterDirection.Input, True, 10, 0, "", DataRowVersion.Proposed, Globals.clsmitarbeiter.iMitarbeiternr.Value))
            scmCmdToExecute.Parameters.Add(New SqlParameter("@Details", SqlDbType.Int, 4, ParameterDirection.Input, True, 10, 0, "", DataRowVersion.Proposed, Details_anzeigen))
            sdaAdapter.Fill(dtToReturn)
            Return dtToReturn
        Catch ex As Exception
            Throw New Exception("clsVertragsuebersicht::" & scmCmdToExecute.CommandText & "::Error occured." & ex.Message, ex)
        Finally
            scmCmdToExecute.Dispose()
            sdaAdapter.Dispose()
        End Try
    End Function

    Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    End Sub
End Class


''' <summary>
''' Treenode-Descriptor zur Befüllung des Tree-Node-Tags
''' </summary>
''' <remarks>Treenode-Tags werden mit den 2 Elementen (Type und Keyvalue) befüllt:
''' Type: Vertragspartner, Vertragstyp
''' Keyvalue: Primary-Key des Elementes</remarks>
Public Class Treenode_Descriptor
    Dim m_type As String
    Property Type() As String
        Get
            Return m_type
        End Get
        Set(ByVal value As String)
            m_type = value
        End Set
    End Property

    Dim m_keyvalue As Integer
    Property Keyvalue() As Integer
        Get
            Return m_keyvalue
        End Get
        Set(ByVal value As Integer)
            m_keyvalue = value
        End Set
    End Property

    Dim m_vertragspartnernr As Integer
    Property Vertragspartnernr() As Integer
        Get
            Return m_vertragspartnernr
        End Get
        Set(ByVal value As Integer)
            m_vertragspartnernr = value
        End Set
    End Property
    Dim m_vertragstypnr As Integer
    Property Vertragstypnr() As Integer
        Get
            Return m_vertragstypnr
        End Get
        Set(ByVal value As Integer)
            m_vertragstypnr = value
        End Set
    End Property

    Sub New(ByVal Type As String, ByVal Keyvalue As Integer, ByVal Vertragspartnernr As Integer, ByVal vertragstypnr As Integer)
        Me.Type = Type
        Me.Keyvalue = Keyvalue
        Me.Vertragspartnernr = Vertragspartnernr
        Me.Vertragstypnr = vertragstypnr
    End Sub
End Class