private void addPDFToLesson_Click(object sender, EventArgs e)
{
if (pdfv == null)
{
pdfv = new PDFView();
pdfv.MdiParent = this;
pdfv.FormClosed += new FormClosedEventHandler(pdfv_FormClosed);
pdfv.Show();
pdfv.changeDir(cdir + "\\" + lesson, lesson);
}
else
{
pdfv.Activate();
}
}
private void viewPDFBtn_Click(object sender, EventArgs e)
{
PDFView pdf = new PDFView();
pdf.Show();
}