CodeProject.AboutDialog.FeedbackDialog.sendButton_Click C# (CSharp) Метод

        private void sendButton_Click(object sender, EventArgs e)
        {
            if (txtFrom.Text.Length == 0)
            {
                MessageBox.Show("Please enter a return address.");
            }
            if (txtSubject.Text.Length == 0)
            {
                MessageBox.Show("Please enter a subject.");
            }
            if (txtMessage.Text.Length == 0)
            {
                MessageBox.Show("Please enter a message.");
            }

            // Send email...
        }