void filterToolStripMenuItem_Click(object sender, EventArgs e)
{
ToolStripMenuItem filterToolStripMenuItem = sender as ToolStripMenuItem;
IBaseFilter filter = FilterGraphTools.FindFilterByName(this.currentGraphBuilder.FilterGraph, filterToolStripMenuItem.Text);
if(filter != null)
{
FilterGraphTools.ShowFilterPropertyPage(filter, this.Handle);
Marshal.ReleaseComObject(filter);
}
}