PIbd-32_Rogashova_E.A._COP_1/COPWinForms/ComponentTBox.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace COPWinForms
{
    public partial class ComponentTBox : UserControl
    {
        //Шаблон для textbox
        private string? pattern;
        //Пример ввода
        private string example = "example@gmail.com";
        private event Action? _errorOccured;


        public string Error { get; private set; }

        public ComponentTBox()
        {
            InitializeComponent();
            Error = string.Empty;

        }
        //Публичное свойство для получения и заполнения шаблона
        public string? Pattern
        {
            get { return pattern; }
            set { pattern = value; }
        }
        //Публичное свойство для получения и заполнения значения
        public string? TextBoxValue
        {
            get
            {
                
                if (pattern != null) {
                    Regex regex = new Regex(Pattern);
                    bool isValid = regex.IsMatch(textBox.Text);
                    if (isValid)
                    {
                        return textBox.Text;
                    }
                    else
                    {
                        Error = "Is not email";
                        _errorOccured?.Invoke();
                        return null;
                    }
                }
                else { 
                    Error = "No pattern";
                    _errorOccured?.Invoke();
                    return null;
                }
            }
            set
            {
                if (pattern != null)
                {
                    Regex regex = new Regex(Pattern);
                    bool isValid = regex.IsMatch(value);
                    if (isValid)
                    {
                        textBox.Text = value;
                    }
                    else
                    {
                        Error = "Is not email";
                        _errorOccured?.Invoke();
                        return;
                    }
                    
                }
                else
                {
                    Error = "No pattern";
                    _errorOccured?.Invoke();
                    return;
                }
            }
        }

        //Метод для заполнения примера
        public void setExample(string str)
        {
            if (pattern != null)
            {
                Regex regex = new Regex(Pattern);
                bool isValid = regex.IsMatch(str);
                if (isValid)
                {
                    example = str;
                }
            }
            else
            {
                Error = "No pattern";
                _errorOccured?.Invoke();
                return;
            }
            

        }

        //ToolTip для вывода примера
        private void textBox_Enter(object sender, EventArgs e)
        {
            int VisibleTime = 3000;  //in milliseconds

            ToolTip tt = new ToolTip();
            tt.Show(example, textBox, 0, 20, VisibleTime);
        }

        private EventHandler _explicitEvent;
        public event EventHandler ExplicitEvent
        {
            add
            {
                _explicitEvent += value;
            }
            remove
            {
                _explicitEvent -= value;
            }
        }
        public event Action AnErrorOccurred
        {
            add { _errorOccured += value; }
            remove { _errorOccured -= value; }
        }

        //событие при смене значения
        private void textBox_TextChanged(object sender, EventArgs e)
        {
            try
            {
                _explicitEvent?.Invoke(sender, e);
            }
            catch (Exception ex)
            {
                Error = ex.Message;
                _errorOccured?.Invoke();
            }

        }

    }
}