252 lines
9.1 KiB
VB.net
252 lines
9.1 KiB
VB.net
Imports System.Data.SqlTypes
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Imports System.Data.SqlClient
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Public Class clsUebersicht
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#Region "Deklarationen"
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Dim treedata As New DataSet
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Public treedata_for_search As New DataTable
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Dim TreeaufbauSuche As Boolean = False
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Dim TreeaufbauNr As Integer = 0
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Dim FoundNode As Integer = 0
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Dim Searchstring As String = ""
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Public Treesearch As New TreeView
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Dim Datenklasse As New _DataClass.DataClass
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#End Region
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#Region "Tree"
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Public Sub Load_Treeview(ByRef tree As TreeView)
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treedata.Tables.Clear()
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TreeaufbauNr = -1
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For Each dr As DataRow In Globals.Objekt.Rows
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If dr.Item("Aktiv") = True Then
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Load_Treedata(dr.Item("Bezeichnung"))
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If Not (treedata Is Nothing) Then
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Dim oView As DataView = treedata.Tables(0).DefaultView
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Dim oTable As DataTable = oView.Table
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Dim oDS As DataSet = New DataSet()
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oDS.Tables.Add(oTable.Copy())
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If oDS.Relations.Contains("SelfRefenceRelation") = False Then
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oDS.Relations.Add("SelfRefenceRelation", _
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oDS.Tables(0).Columns("id"), _
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oDS.Tables(0).Columns("Parentid"))
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End If
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oTable.Dispose()
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oTable = Nothing
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LoadTreeView(oDS, tree)
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oDS.Dispose()
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oDS = Nothing
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End If
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End If
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Next
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End Sub
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Public Function Load_Treedata(ByVal datatype As String) As DataTable
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treedata.Tables.Clear()
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Dim selectcommand As New SqlCommand
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Dim connection As New SqlConnection()
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Dim da As New SqlDataAdapter("", connection)
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selectcommand.CommandText = "sp_get_struktur"
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selectcommand.Parameters.Add("@Root", SqlDbType.VarChar)
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selectcommand.Parameters(0).Value = Datatype
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selectcommand.CommandType = CommandType.StoredProcedure
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selectcommand.Connection = connection
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Try
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connection.ConnectionString = Globals.sConnectionString
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connection.Open()
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da.SelectCommand = selectcommand
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da.Fill(treedata, "Tree")
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If treedata_for_search.Rows.Count < 1 Then
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For Each c As DataColumn In treedata.Tables(0).Columns
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If c.ColumnName = "ErweiterteSuche" Then
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Dim dc As New DataColumn
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dc.ColumnName = "ErweiterteSuche"
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dc.DataType = System.Type.GetType("System.String")
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dc.DefaultValue = " "
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Me.treedata_for_search.Columns.Add(dc)
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Else
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Me.treedata_for_search.Columns.Add(c.ColumnName)
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End If
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Next
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End If
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For Each row As DataRow In treedata.Tables(0).Rows
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Me.treedata_for_search.ImportRow(row)
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Next
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Catch ex As Exception
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MsgBox(ex.Message)
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Finally
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connection.Close()
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da.Dispose()
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selectcommand.Dispose()
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End Try
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End Function
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''' <summary>
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''' Tree aufbauen
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''' </summary>
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''' <param name="oDS"></param>
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''' <param name="oTreeview"></param>
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''' <remarks></remarks>
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Private Sub LoadTreeView(ByVal oDS As DataSet, ByRef oTreeview As TreeView)
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'Dim oTreeView As TreeView = New TreeView()
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Dim oDataRow As DataRow
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For Each oDataRow In oDS.Tables(0).Rows
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If Not oDataRow.IsNull("Parentid") Then
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If oDataRow.Item("Parentid") = 0 Then
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'If oDataRow.IsNull("Parentid") Then
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Dim oNode As New TreeNode()
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oNode.Text = Trim(oDataRow("Bezeichnung").ToString())
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Try
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oNode.ToolTipText = Trim(oDataRow("ErweiterteSuche").ToString)
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Catch
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End Try
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oNode.Tag = oDataRow("id").ToString
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oNode.ImageIndex = oDataRow("ImageIndex")
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oNode.SelectedImageIndex = oDataRow("ImageIndex")
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oNode.StateImageIndex = oDataRow("ImageIndex")
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oTreeview.Nodes.Add(oNode)
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RecursivelyLoadTree(oDataRow, oNode)
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End If
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End If
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Next oDataRow
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oDS.Dispose()
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oDS = Nothing
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End Sub
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''' <summary>
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''' Child-Nodes hinzufügen
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''' </summary>
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''' <param name="oDataRow"></param>
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''' <param name="oNode"></param>
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''' <remarks></remarks>
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Private Sub RecursivelyLoadTree(ByVal oDataRow As DataRow, ByRef oNode As TreeNode)
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Dim oChildRow As DataRow
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For Each oChildRow In oDataRow.GetChildRows("SelfRefenceRelation")
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Dim oChildNode As New TreeNode()
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oChildNode.Text = Trim(oChildRow("Bezeichnung").ToString())
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oChildNode.Tag = oChildRow("id").ToString()
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oChildNode.ImageIndex = oChildRow("ImageIndex")
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oChildNode.SelectedImageIndex = oChildRow("ImageIndex")
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oChildNode.StateImageIndex = oChildRow("ImageIndex")
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oNode.Nodes.Add(oChildNode)
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RecursivelyLoadTree(oChildRow, oChildNode)
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Next oChildRow
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End Sub
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Public Function FindNode(ByVal _nodeCollection As TreeNodeCollection, ByVal SearchVal As Integer, ByVal SearchString As String) As TreeNode
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Dim tmpNode As TreeNode
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For Each _child As TreeNode In _nodeCollection
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If _child.Tag = SearchVal Then
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Return _child
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End If
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' If InStr(UCase(_child.Text), UCase(SearchString)) > 0 Then
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' Return _child
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' End If
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tmpNode = FindNode(_child.Nodes, SearchVal, SearchString)
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If Not tmpNode Is Nothing Then
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Return tmpNode
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End If
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Next
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Return Nothing
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End Function
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Public Function TreeView_GetRootNode(objTV As TreeView, node As TreeNode) As _DataClass.DataClass.Struktur_Selectiontype
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If node.Parent Is Nothing Then
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Return Datenklasse.Get_Selectiontype(node.Text)
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' MsgBox(String.Format("You clicked a parent node named {0}", node.Text))
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Else
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Dim parent As TreeNode = node.Parent
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While Not parent.Parent Is Nothing
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parent = parent.Parent
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End While
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Return Datenklasse.Get_Selectiontype(Trim(parent.Text))
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'MsgBox(String.Format("The node's parent is {0}", parent.Text))
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End If
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End Function
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Public Function Init_Search()
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FoundNode = 0
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Searchstring = ""
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Me.Treesearch.Nodes.Clear()
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End Function
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Public Function SearchNode(ByRef tree As TreeView, ByVal SearchString As String) As TreeNode
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Me.Treesearch.Nodes.Clear()
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For Each dr As DataRow In treedata_for_search.Rows
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If InStr(UCase(dr.Item("Bezeichnung")), UCase(SearchString)) > 0 Or InStr(UCase(dr.Item("ErweiterteSuche")), UCase(SearchString)) > 0 Then
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Dim tn As New TreeNode
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tn = Me.Treesearch.Nodes.Add(dr.Item("Bezeichnung"))
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tn.Tag = dr.Item("id")
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End If
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Next
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Return FindFirst(tree)
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End Function
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Public Function FindFirst(ByRef Tree As TreeView) As TreeNode
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Try
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If Me.Treesearch.Nodes.Count > 0 Then Me.Treesearch.SelectedNode = Me.Treesearch.Nodes(0)
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Return FindNode(Tree.Nodes, Treesearch.SelectedNode.Tag, "")
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Catch
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End Try
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End Function
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Public Function FindNextNode(ByRef tree As TreeView) As TreeNode
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Try
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Treesearch.SelectedNode = Treesearch.SelectedNode.NextNode
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If Treesearch.SelectedNode Is Nothing Then
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Return FindFirst(tree)
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End If
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Return Me.FindNode(tree.Nodes, Treesearch.SelectedNode.Tag, "")
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Catch ex As Exception
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End Try
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End Function
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Public Function FindPrevNode(ByRef tree As TreeView) As TreeNode
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Try
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Treesearch.SelectedNode = Treesearch.SelectedNode.PrevNode
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If Treesearch.SelectedNode Is Nothing Then
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Return FindLastNode(tree)
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End If
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Return Me.FindNode(tree.Nodes, Treesearch.SelectedNode.Tag, "")
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Catch ex As Exception
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End Try
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End Function
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Public Function FindLastNode(ByRef tree As TreeView) As TreeNode
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Try
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Treesearch.SelectedNode = Treesearch.Nodes(Treesearch.Nodes.Count - 1)
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Return Me.FindNode(tree.Nodes, Treesearch.SelectedNode.Tag, "")
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Catch ex As Exception
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End Try
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End Function
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Public Function Get_DBObjektname(ByVal type As Integer) As String
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For Each dr As DataRow In Globals.Objekt.Rows
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If dr.Item("Objektnr") = type Then
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Return dr.Item("DBOBject")
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Exit For
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End If
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Next
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End Function
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#End Region
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End Class
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