Progress Event

Summary
Occurs periodically during a conversion operation to notify percentage completed.
Syntax
C#
C++/CLI
public event ProgressEventHandler Progress 
public: 
event ProgressEventHandler^ Progress 
Event Data

The event handler receives an argument of type ProgressEventArgs containing data related to this event. The following ProgressEventArgs properties provide information specific to this event.

PropertyDescription
percent The percentage complete for convert progress notifications.
time The time elapsed for capture progress notifications.
Remarks

The event handler is passed a ProgressEventArgs containing the percentage completed.

Example
C#
using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
public void ProgressExample() 
{ 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi"); 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ProgressExample.MP4"); 
 
   // reference the convert control 
   ConvertCtrl convertctrl = _form.ConvertCtrl; 
 
   try 
   { 
      // set the input and output files 
      convertctrl.SourceFile = inFile; 
      convertctrl.TargetFile = outFile; 
 
      // select the target format 
      convertctrl.TargetFormat = TargetFormatType.MP4; 
 
      // select video and audio target formats for the output 
      int index = -1; 
      TargetVideoFormats targetvideoformats = convertctrl.TargetFormats[convertctrl.TargetFormat].VideoFormats; 
      index = targetvideoformats.IndexOf("{34363248-0000-0010-8000-00AA00389B71}");// H264 
      targetvideoformats.Selection = index; 
      TargetAudioFormats targetaudioformats = convertctrl.TargetFormats[convertctrl.TargetFormat].AudioFormats; 
      index = targetaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}");// AAC 
      targetaudioformats.Selection = index; 
 
      // set our progress event handler 
      convertctrl.Progress += new ProgressEventHandler(ConvertCtrl_Progress); 
 
      // convert it now! 
      convertctrl.StartConvert(); 
   } 
   catch (COMException cex) 
   { 
      if (cex.ErrorCode == (int)ErrorCode.VFW_E_WRONG_STATE) 
         throw cex; 
      _result = false; 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
 
   // 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(); 
} 
 
public void ConvertCtrl_Progress(object sender, ProgressEventArgs e) 
{ 
   // set the result to true if complete 
   if (e.percent == 100) 
      _result = true; 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS23\Media"; 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.MediaFoundation Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.