Imports DigitalData.Modules.Logging Public Class Form1 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim oResult = OpenFileDialog1.ShowDialog() If oResult = DialogResult.OK Then TextBox1.Text = OpenFileDialog1.FileName End If End Sub Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click Try DocumentViewer1.LoadFile(TextBox1.Text) Catch ex As Exception MsgBox(ex.Message) End Try End Sub Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Dim oKey = "0467389434974657969312056" Dim oLogConfig As New LogConfig(LogConfig.PathType.CurrentDirectory) DocumentViewer1.Init(oLogConfig, oKey) End Sub End Class