private void sayButton_Click(object sender, EventArgs e)
{
Font font = saysTextbox.SelectionFont;
Color color = saysTextbox.SelectionColor;
controller.AddSay(saysTextbox.Text, saysTextbox.Rtf);
saysTextbox.Text = "";
saysTextbox.SelectionColor = color;
saysTextbox.SelectionFont = font;
saysTextbox.Focus();
}