Imports System.Data.SqlClient
Imports System.Data.SqlTypes
Imports System.IO
Public Class VBFileManagement
    Public Function Update_Vorlage(filename As String, vorlageid As String, connectionstring As String, manr As Integer)
        Dim IntFilename As String
        Dim Connection As New SqlConnection()
        Dim DA As New SqlDataAdapter("select * from office_vorlage_datei where office_vorlage_dateinr = " + Str(vorlageid), Connection)
        Dim cb As SqlCommandBuilder = New SqlCommandBuilder(DA)
        Dim ds As New DataSet()
        Dim fs As New FileStream(filename, FileMode.OpenOrCreate, FileAccess.Read)
        Dim mydata(fs.Length) As Byte
        Dim fi As New IO.FileInfo(filename)
        IntFilename = (fi.Name)
        Try
            fs.Read(mydata, 0, fs.Length)
            fs.Close()

            Connection.ConnectionString = connectionstring
            Connection.Open()
            DA.Fill(ds, "docs")
            Dim myRow As DataRow
            If ds.Tables(0).Rows.Count = 0 Then
                ' Neues Dokument speichern
                myRow = ds.Tables(0).NewRow
                myRow.Item(0) = vorlageid
                myRow.Item(1) = 0
                myRow.Item(2) = mydata
                myRow.Item(3) = 1
                myRow.Item(4) = Now
                myRow.Item(5) = manr
                myRow.Item(6) = 0
                myRow.Item(7) = System.DBNull.Value
                myRow.Item(8) = 0
                myRow.Item(10) = IntFilename
                ds.Tables(0).Rows.Add(myRow)
                DA.Update(ds, "docs")
            Else
                'Bestehendes Dokument sichenr
                myRow = ds.Tables(0).Rows(0)
                myRow.Item(2) = mydata
                myRow.Item(3) = 1
                myRow.Item(4) = Now
                myRow.Item(5) = manr
                myRow.Item(6) = 0
                myRow.Item(7) = System.DBNull.Value
                myRow.Item(8) = 0
                myRow.Item(10) = IntFilename
                DA.Update(ds, "docs")
            End If
        Catch ex As Exception

            MsgBox(ex.Message)
        End Try
        fs = Nothing
        cb = Nothing
        ds = Nothing
        DA = Nothing

        Connection.Close()
        Connection = Nothing
    End Function

    Public Function Get_From_DB(ByVal office_vorlagenr As Integer, ByVal filename As String, ByVal connectionstring As String, Optional ByVal Office2010_Vorlage As Boolean = False) As String

        Dim connection As New SqlConnection()
        Dim s As String = "Select * From office_vorlage_datei where office_vorlage_Dateinr=" + Trim(Str(office_vorlagenr))
        If Office2010_Vorlage = True Then
            s = "Select * from Office2010_Vorlage_datei where office_vorlage_dateinr=" + Trim(Str(office_vorlagenr))
        End If
        Dim da As New SqlDataAdapter(s, connection)
        Dim CB As SqlCommandBuilder = New SqlCommandBuilder(da)
        Dim ds As New DataSet()
        Try
            connection.ConnectionString = connectionstring
            connection.Open()
            da.Fill(ds, "docs")
            Dim myRow As DataRow
            myRow = ds.Tables(0).Rows(0)
            Dim MyData() As Byte
            MyData = myRow.Item(2)
            Dim K As Long
            K = UBound(MyData)
            Dim fs As New FileStream(filename, FileMode.OpenOrCreate, FileAccess.Write)
            fs.Write(MyData, 0, K)
            fs.Close()
            fs = Nothing
            Return filename
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
        CB = Nothing
        ds = Nothing
        da = Nothing
        connection.Close()
        connection = Nothing
    End Function

    Public Function Get_Dok_From_DB(ByVal sDokumentID As String, ByVal sDokumentName As String, ByVal connectionstring As String) As Boolean

        Dim connection As New SqlConnection()
        Dim da As New SqlDataAdapter("Select * From doks where DokumentID='" + sDokumentID + "'", connection)
        Dim CB As SqlCommandBuilder = New SqlCommandBuilder(da)
        Dim ds As New DataSet()

        Try
            'Connectionstring zur Datenbank
            connection.ConnectionString = connectionstring
            connection.Open()
            da.Fill(ds, "docs")
            Dim myRow As DataRow
            myRow = ds.Tables(0).Rows(0)
            Dim MyData() As Byte
            MyData = myRow.Item(1)
            Dim K As Long
            K = UBound(MyData)
            Dim fs As New FileStream(sDokumentName, FileMode.OpenOrCreate, FileAccess.Write)
            fs.Write(MyData, 0, K)
            fs.Close()
            fs = Nothing
        Catch ex As Exception
            Return False
        End Try
        CB = Nothing
        ds = Nothing
        da = Nothing
        connection.Close()
        connection = Nothing
        Return True
    End Function

End Class