101 lines
2.3 KiB
C#
101 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using VisualComponentsLib.CustomException;
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namespace VisualComponentsLib
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{
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public partial class MyTextBox : UserControl
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{
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public double? TextBoxValue
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{
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get
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{
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if (checkBox.Checked)
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{
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return null;
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}
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if (!CheckValue())
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{
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return null;
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}
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return Convert.ToDouble(textBox.Text);
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}
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set
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{
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checkBox.Checked = !value.HasValue;
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textBox.Text = value?.ToString();
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}
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}
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private string? ErrorMessage
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{
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get;
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set;
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}
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public MyTextBox()
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{
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InitializeComponent();
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}
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private EventHandler _textChanged;
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public new event EventHandler? TextChanged
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{
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add => _textChanged += value;
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remove => _textChanged -= value;
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}
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private void CheckBox_CheckedChanged_1(object sender, EventArgs e)
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{
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if (textBox.ReadOnly == true)
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{
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textBox.ReadOnly = false;
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}
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else
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{
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textBox.ReadOnly = true;
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}
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}
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private void TextBox_TextChanged(object sender, EventArgs e)
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{
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_textChanged?.Invoke(sender, e);
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}
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private bool CheckValue()
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{
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if (textBox.Text == null && !checkBox.Checked)
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{
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ErrorMessage = "Недопустимое значение null";
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return false;
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}
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if (!textBox.Text.Contains('.') ||
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textBox.Text.IndexOf('.') == textBox.Text.Length - 1 ||
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textBox.Text.Length <= 2)
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{
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ErrorMessage = "Некорректное double значение";
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return false;
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}
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return true;
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}
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}
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}
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