Public Overridable Sub OpenLogFile( _
   ByVal fileName As String, _
   ByVal flags As LogFileFlags _
) 

Dim instance As ConvertCtrl
Dim fileName As String
Dim flags As LogFileFlags
 
instance.OpenLogFile(fileName, flags)

public virtual void OpenLogFile( 
   string fileName,
   LogFileFlags flags
)

public:
virtual void OpenLogFile( 
   String^ fileName,
   LogFileFlags flags
) 

Public _result As Boolean = False
      Public _form As ConvertCtrlForm = New ConvertCtrlForm()
      Public Sub LogFileExample()
         ' reference the convert control
         Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

         ' input and output files
         Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_HasDialogExample.avi")

         ' log file
         Dim logFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Log.txt")

         Try
            ' set the source for conversion
            convertctrl.SourceFile = inFile

            ' set the video and audio compressors
            convertctrl.VideoCompressors.Mpeg2.Selected = True
            convertctrl.AudioCompressors.AC3.Selected = True

            ' set the target output file and format
            convertctrl.TargetFile = outFile

            ' set the target output format
            convertctrl.TargetFormat = TargetFormatType.AVI

            ' set the log file for conversion process 
            ' information logging
            convertctrl.OpenLogFile(logFile, LogFileFlags.SourceInfo Or LogFileFlags.GraphBuilder Or LogFileFlags.StreamInfo)

            ' start the capture process
            convertctrl.StartConvert()

            ' we'll loop on the state and pump messages for this example.
            ' but you should not need to if running from a Windows Forms application.
            Do While convertctrl.State = ConvertState.Running
               Application.DoEvents()
            Loop

            ' close the log file
            convertctrl.CloseLogFile()

            ' set the result to what we expect
            _result = (File.Exists(logFile))
         Catch e1 As Exception
            _result = False
         End Try
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media"
End Class

public bool _result = false;
      public ConvertCtrlForm _form = new ConvertCtrlForm();
      public void LogFileExample()
      {
         // reference the convert control
         ConvertCtrl convertctrl = _form.ConvertCtrl;

         // input and output files
         string inFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
         string outFile =Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_HasDialogExample.avi");

         // log file
         string logFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Log.txt");

         try
         {
            // set the source for conversion
            convertctrl.SourceFile = inFile;

            // set the video and audio compressors
            convertctrl.VideoCompressors.Mpeg2.Selected = true;
            convertctrl.AudioCompressors.AC3.Selected = true;

            // set the target output file and format
            convertctrl.TargetFile = outFile;

            // set the target output format
            convertctrl.TargetFormat = TargetFormatType.AVI;

            // set the log file for conversion process 
            // information logging
            convertctrl.OpenLogFile(logFile, LogFileFlags.SourceInfo | LogFileFlags.GraphBuilder | LogFileFlags.StreamInfo);

            // start the capture process
            convertctrl.StartConvert();

            // we'll loop on the state and pump messages for this example.
            // but you should not need to if running from a Windows Forms application.
            while (convertctrl.State == ConvertState.Running)
               Application.DoEvents();

            // close the log file
            convertctrl.CloseLogFile();

            // set the result to what we expect
            _result = (File.Exists(logFile));
         }
         catch (Exception)
         {
            _result = false;
         }
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media";
}