/// <summary>
/// Buttons feedback click.
/// </summary>
/// <param name="sender">Sender.</param>
/// <param name="e">E.</param>
protected void btnFeedback_Click(object sender, EventArgs e)
{
FeedbackManager fm = new FeedbackManager();
fm.addFeedback(Session["Username"].ToString(), tbFeedbackMessage.Text);
pnlFeedback.Visible = false;
lblFeedbackMessage.Visible = true;
lblFeedbackMessage.Text = "Feedback Sent!";
}