PIbd-33_Lisov_N.A_COP_30/CustomComponents/TextBox.cs

using CustomComponents.Exceptions;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CustomComponents
{
    public partial class frameTextBox : UserControl
    {
        private string? _text;

        public event EventHandler taskHandler;

        public frameTextBox()
        {
            InitializeComponent();
        }

        public string? Value
        {
            get
            {
                return _text;
            }
            set
            {
                _text = value;
            }
        }

        private void CheckBoxStateChanged(object sender, EventArgs e)
        {
            try
            {
                if (ruleCheckBox.Checked)
                {
                    textBox.Enabled = false;

                    if (!string.IsNullOrEmpty(_text))
                    {
                        throw new ContentException(true);
                    }
                }
                else
                {
                    textBox.Enabled = true;
                    if (string.IsNullOrEmpty(_text))
                    {
                        throw new ContentException(false);
                    }
                }
            }
            catch(ContentException ex)
            {
                taskHandler += (sender, e) => MessageBox.Show(ex.Message);
            }
            taskHandler?.Invoke(this, e);
            
        }

        private void CheckTextBoxValueType(object sender, EventArgs args)
        {
            Value = textBox.Text;
            try
            {
                Convert.ToInt32(Value);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
    }
}