UserManager/DDUserManager/DDUserManager/frmConfigDatabase.vb

Imports System.IO
Imports DD_LIB_Standards

Public Class frmConfigDatabase

    Private ConnectionChanged As Boolean = False

    Private Sub frmConfigDatabase_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        If Not MyConnectionString = String.Empty Then
            ConnectionChanged = False

            Dim csb As New SqlClient.SqlConnectionStringBuilder
            csb.ConnectionString = MyConnectionString

            Dim constr = MyConnectionString
            If Not MyConnectionString.Contains("Trusted") Then
                constr = constr.Replace(csb.Password, "XXXXX")
                txtUser.Text = csb.UserID
                chkbxUserAut.Checked = False
            Else
                chkbxUserAut.Checked = True
            End If

            Try
                txtServer.Text = csb.DataSource
                cmbDatenbank.Text = csb.InitialCatalog
            Catch ex As Exception

            End Try

            txtActualConnection.Text = constr
        End If
    End Sub

    Sub Load_Databases()
        Try
            Me.Cursor = Cursors.WaitCursor
            Dim csb As New SqlClient.SqlConnectionStringBuilder
            csb.DataSource = Me.txtServer.Text
            csb.IntegratedSecurity = False
            csb.UserID = Me.txtUser.Text
            csb.Password = Me.txtPasswort.Text

            Dim con As String
            If chkbxUserAut.Checked Then
                con = "Data Source=" & Me.txtServer.Text & ";Trusted_Connection=True;"
            Else
                'con = "Server=" & Me.txtServer.Text & ";Database=" & Me.cmbDatenbank.Text & ";User Id=" & Me.txtUser.Text & ";Password=" & Me.txtPasswort.Text & ";"
                con = "Server=" & Me.txtServer.Text & ";User Id=" & Me.txtUser.Text & ";Password=" & Me.txtPasswort.Text & ";"
            End If
            Dim connection As New SqlClient.SqlConnection(con) 'csb.ConnectionString)
            connection.Open()
            Dim cmd As New SqlClient.SqlCommand("sp_databases", connection)
            cmd.CommandType = CommandType.StoredProcedure
            ' Ausführen und Ergebnis in einer ListBox anzeigen
            Dim dr As SqlClient.SqlDataReader = cmd.ExecuteReader
            If dr.HasRows Then
                cmbDatenbank.Items.Clear()
                Do While dr.Read
                    cmbDatenbank.Items.Add(dr("Database_Name"))
                Loop
                cmbDatenbank.DroppedDown = True
            Else
                MsgBox("The standard-databases could not be retrieved. The default database will be set!" & vbNewLine & "Check rights in sql-server for user: " & Me.txtUser.Text, MsgBoxStyle.Exclamation)
            End If
            connection.Close()
        Catch ex As Exception
            If ex.Message.ToLower.Contains("he standard-databases") Or ex.Message.ToLower.Contains("ie standard-datenbanken") Then
                cmbDatenbank.Text = "DD_ECM"
            End If
            MsgBox(ex.Message, MsgBoxStyle.Critical, "Error in Load Databases:")
        End Try
        Cursor = Cursors.Default
    End Sub

    Private Sub BtnConnect_Click(sender As Object, e As EventArgs) Handles BtnConnect.Click
        Try
            Dim con As String
            If chkbxUserAut.Checked Then
                con = "Server=" & Me.txtServer.Text & ";Database=" & Me.cmbDatenbank.Text & ";Trusted_Connection=True;Application Name=DD UserManager"
            Else
                con = "Server=" & Me.txtServer.Text & ";Database=" & Me.cmbDatenbank.Text & ";User Id=" & Me.txtUser.Text & ";Password=" & Me.txtPasswort.Text & ";Application Name=DD ADDI-Client"
            End If

            Dim connection As New SqlClient.SqlConnection(con) 'csb.ConnectionString)
            'während Verbindungsaufbau Sanduhr-Mauszeiger
            Cursor = Cursors.WaitCursor
            connection.Open()
            Cursor = Cursors.Default
            'DialogResult = Windows.Forms.DialogResult.OK
            Dim result As MsgBoxResult
            Dim msg = "Die Verbindung wurde erfolgreich aufgebaut!" & vbNewLine & "Möchten Sie diese Verbindung nun in der Anwendung speichern?"
            result = MessageBox.Show(msg, "Datenbank-Verbindung", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
            If result = MsgBoxResult.Yes Then
                ConnectionChanged = True
                'Set the construction string
                MyConnectionString = con
                clsDatabase.Init(MyConnectionString)
                My.Settings.Save()

                If chkbxUserAut.Checked = False Then
                    Dim wrapper As New clsEncryption("!35452didalog=")
                    Dim cipherText As String = wrapper.EncryptData(Me.txtPasswort.Text)
                    Dim pw As String = cipherText
                    con = "Server=" & Me.txtServer.Text & ";Database=" & Me.cmbDatenbank.Text & ";User Id=" & Me.txtUser.Text & ";Password=" & pw & ";"
                End If

                SaveMySettingsValue("MyConnectionString", con, "ConfigMain")

                Dim csb As New SqlClient.SqlConnectionStringBuilder
                csb.ConnectionString = MyConnectionString
                Dim constr = connection.ConnectionString
                If chkbxUserAut.Checked = False Then
                    constr = constr.Replace(csb.Password, "XXXXX")
                End If
                Me.txtActualConnection.Text = constr
            End If
        Catch ex As Exception
            Cursor = Cursors.Default
            MsgBox("Error in Connectionbuild: " & vbNewLine & ex.Message, MsgBoxStyle.Exclamation)
        End Try
    End Sub

    Private Sub cmbDatenbank_MouseClick(sender As Object, e As MouseEventArgs) Handles cmbDatenbank.MouseClick
        If txtServer.Text = String.Empty Or txtUser.Text = String.Empty Or txtPasswort.Text = String.Empty Then
            MsgBox("Bitte füllen Sie die Felder 'Server-Name', 'Benutzername' und 'Passwort' zuerst aus!", MsgBoxStyle.Exclamation, "Datenbank-Verbindung")
        Else
            Load_Databases()
        End If
    End Sub
End Class