Public Overridable Property Preview As Boolean

Dim instance As ConvertCtrl
Dim value As Boolean
 
instance.Preview = value
 
value = instance.Preview

public virtual bool Preview {get; set;}

public:
virtual property bool Preview {
   bool get();
   void set (    bool value);
}

Public _result As Boolean = False
      Public _form As ConvertCtrlForm = New ConvertCtrlForm()
      Public Sub HasDialogExample()
         ' 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")

         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

            ' The HasDialog method tells us that the control
            ' can display the desired settings dialog.
            ' check to see if the convert source dialog is available
            If convertctrl.HasDialog(ConvertDlg.TargetFormat) Then
               ' now show it
               convertctrl.ShowDialog(ConvertDlg.TargetFormat, _form)
               _result = True
            End If

            ' 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

            ' see if there was an error
            If convertctrl.ConvertError <> 0 Then
               ' set the result to false
               _result = False
            End If
         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 HasDialogExample()
      {
         // 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");

         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;

            // The HasDialog method tells us that the control
            // can display the desired settings dialog.
            // check to see if the convert source dialog is available
            if (convertctrl.HasDialog(ConvertDlg.TargetFormat))
            {
               // now show it
               convertctrl.ShowDialog(ConvertDlg.TargetFormat, _form);
               _result = true;
            }

            // 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();

            // see if there was an error
            if (convertctrl.ConvertError != 0)
            {
               // set the result to false
               _result = false;
            }
         }
         catch (Exception)
         {
            _result = false;
         }
      }

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