Imports DigitalData.Modules.Logging Public Class frmChecksum Private LogConfig As LogConfig Private FileEx As DigitalData.Modules.Filesystem.File Private Sub frmChecksum_Load(sender As Object, e As EventArgs) Handles MyBase.Load LogConfig = New LogConfig(LogConfig.PathType.Temp) FileEx = New DigitalData.Modules.Filesystem.File(LogConfig) End Sub Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click If OpenFileDialog1.ShowDialog() = DialogResult.OK Then TextBox1.Text = OpenFileDialog1.FileName End If End Sub Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click Dim oChecksum = FileEx.GetChecksum(TextBox1.Text) MsgBox(oChecksum) End Sub End Class