private void tsbGeriAl_Click(object sender, EventArgs e)
 {
     //geri alma işlemi yapar
     YaziAlani.Undo();
 }
 private void tsbYapistir_Click(object sender, EventArgs e)
 {
     YaziAlani.Paste();
 }
 private void tsbKopyala_Click(object sender, EventArgs e)
 {
     YaziAlani.Copy();
     tsbYapistir.Enabled = true;
 }
 private void yapıştırToolStripMenuItem_Click(object sender, EventArgs e)
 {
     YaziAlani.Paste();
 }
 private void kopyalaToolStripMenuItem_Click(object sender, EventArgs e)
 {
     YaziAlani.Copy();
 }
 private void kesToolStripMenuItem_Click(object sender, EventArgs e)
 {
     YaziAlani.Cut();
 }