Render method

we have to add Directshow.net as a reference.
( download it from sourceforge.net)

Render Method Sample application in C# with directshow :
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using System.Runtime.InteropServices;
using DirectShowLib;

namespace RenderMethod
{
class RenderMethod
{
private IGraphBuilder m_pGraphBuilder = null;
private IMediaControl m_pMediaControl = null;
private IMediaEventEx m_pMediaEventEx = null;
private IMediaSeeking m_pMediaSeeking = null;

private IBaseFilter m_pSourceFilter = null;
private IPin m_pOutputPin = null;


public RenderMethod()
{
m_pGraphBuilder = (IGraphBuilder)new FilterGraph();
}

~RenderMethod()
{
CloseInterfaces();
}

public int AddSourceFilter(string sourceFilename)
{
int hr = 0;

if (m_pGraphBuilder == null)
{
return DsResults.E_CannotRender;
}

hr = m_pGraphBuilder.AddSourceFilter(sourceFilename, sourceFilename, out m_pSourceFilter);
DsError.ThrowExceptionForHR(hr);
return hr;

}
public int Render()
{
int hr = 0;
m_pOutputPin = DsFindPin.ByDirection(m_pSourceFilter, PinDirection.Output, 0);
hr = m_pGraphBuilder.Render(m_pOutputPin);
DsError.ThrowExceptionForHR(hr);

m_pMediaControl = m_pGraphBuilder as IMediaControl;
m_pMediaEventEx = m_pGraphBuilder as IMediaEventEx;
m_pMediaSeeking = m_pGraphBuilder as IMediaSeeking;


hr = m_pMediaControl.Run();
DsError.ThrowExceptionForHR(hr);
return hr;
}

private void CloseInterfaces()
{
if (m_pGraphBuilder != null)
{
Marshal.ReleaseComObject(m_pGraphBuilder);
}
GC.Collect();
}

}
}


Client Usage of a class :

RenderMethod renderMethod = null;
renderMethod.AddSourceFilter("D:\\hands.avi");
renderMethod.Render();