public static void AppendSlidesFromFile(this PowerPointProcessor target, string filePath)
{
if (!File.Exists(filePath))
{
return;
}
try
{
var thread = new Thread(delegate()
{
var activeSlideIndex = target.GetActiveSlideIndex();
var presentation = target.PowerPointObject.Presentations.Open(filePath, WithWindow: MsoTriState.msoFalse);
target.AppendSlide(presentation, -1, indexToPaste: activeSlideIndex);
presentation.Close();
});
thread.Start();
while (thread.IsAlive)
{
System.Windows.Forms.Application.DoEvents();
}
}
catch { }
}
