PIbd-31_Yakovlev.M.G._COP_16/ComponentProgramming/Forms/Form.cs

namespace Forms
{
    public partial class Form : System.Windows.Forms.Form
    {
        public Form()
        {
            InitializeComponent();
            FillBox();
            FillTextBox();
        }

        private void FillBox()
        {
            controlComboBox.elements = "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 3, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4";
        }
        private void FillTextBox()
        {
            controlTextBox.text = "+79063908075";
        }

        private void controlComboBox_ComboBoxChanged(object sender, EventArgs e)
        {
            var elem = controlComboBox.elements;
            MessageBox.Show($"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: {elem}");
        }

        private void controlTextBox_CheckBoxChanged(object sender, EventArgs e)
        {
            if (controlTextBox.text == null)
            {
                MessageBox.Show($"CheckBox checked");
            }
            else
            {
                MessageBox.Show($"CheckBox not checked");
            }
        }
    }
}