how to play a list of files from LIstbox1 consistently using DirectShow?

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C#

directshow

so not working... urgently need help
private void menuItem6_Click(object sender, EventArgs e)
{
CleanUp();
listBox1.Items.Clear();
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Multiselect = true;
if (openFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
files = openFileDialog.SafeFileNames;
paths = openFileDialog.FileNames;

for (int i = 0; i < files.Length; i++)
listBox1.Items.Add(files[i]);
}
for (int i = 0; i < openFileDialog.FileNames.Length; i++)
{
m_objFilterGraph = new FilgraphManager();
m_objFilterGraph.RenderFile(paths[i]);

m_objBasicAudio = m_objFilterGraph as IBasicAudio;

// Построение интерфейса(разделение аудио и видео)
try
{
m_objVideoWindow = m_objFilterGraph as IVideoWindow;
m_objVideoWindow.Owner = (int)panel1.Handle;
m_objVideoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
m_objVideoWindow.SetWindowPosition(panel1.ClientRectangle.Left,
panel1.ClientRectangle.Top,
panel1.ClientRectangle.Width,
panel1.ClientRectangle.Height);
}
catch (Exception)
{
m_objVideoWindow = null;
}

m_objMediaEvent = m_objFilterGraph as IMediaEvent;

m_objMediaEventEx = m_objFilterGraph as IMediaEventEx;
m_objMediaEventEx.SetNotifyWindow((int)this.Handle, WM_GRAPHNOTIFY, 0);

m_objMediaPosition = m_objFilterGraph as IMediaPosition;

m_objMediaControl = m_objFilterGraph as IMediaControl;

this.Text = "DirectShow - [" + openFileDialog.FileName + "]";

m_objMediaControl.Run();
m_CurrentStatus = MediaStatus.Running;

UpdateStatusBar();
UpdateToolBar();
}
}