EpgTimer.SetApp2DelWindow.button_add_Click C# (CSharp) Method

button_add_Click() private method

private button_add_Click ( object sender, RoutedEventArgs e ) : void
sender object
e System.Windows.RoutedEventArgs
return void
        private void button_add_Click(object sender, RoutedEventArgs e)
        {
            if (String.IsNullOrEmpty(textBox_ext.Text) == false)
            {
                foreach (String info in listBox_ext.Items)
                {
                    if (String.Compare(textBox_ext.Text, info, true) == 0)
                    {
                        MessageBox.Show("すでに追加されています");
                        return;
                    }
                }
                listBox_ext.Items.Add(textBox_ext.Text);
            }
        }