73 lines
1.4 KiB
C#
73 lines
1.4 KiB
C#
using Components.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 Components
|
|
{
|
|
public partial class CustomTextBox : UserControl
|
|
{
|
|
public event EventHandler ValueChanged;
|
|
|
|
public CustomTextBox()
|
|
{
|
|
InitializeComponent();
|
|
|
|
checkBoxNull.CheckedChanged += CheckBoxNull_CheckedChanged;
|
|
textBoxInteger.TextChanged += TextBoxInteger_TextChanged;
|
|
}
|
|
|
|
public int? Value
|
|
{
|
|
get
|
|
{
|
|
if (checkBoxNull.Checked)
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
if (int.TryParse(textBoxInteger.Text, out int result))
|
|
{
|
|
return result;
|
|
}
|
|
else
|
|
{
|
|
throw new NotIntegerException("Ожидается целое число.");
|
|
}
|
|
}
|
|
}
|
|
set
|
|
{
|
|
if (value.HasValue)
|
|
{
|
|
checkBoxNull.Checked = false;
|
|
textBoxInteger.Text = value.ToString();
|
|
}
|
|
else
|
|
{
|
|
checkBoxNull.Checked = true;
|
|
textBoxInteger.Text = string.Empty;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void TextBoxInteger_TextChanged(object sender, EventArgs e)
|
|
{
|
|
ValueChanged?.Invoke(this, e);
|
|
}
|
|
|
|
private void CheckBoxNull_CheckedChanged(object sender, EventArgs e)
|
|
{
|
|
textBoxInteger.Enabled = !checkBoxNull.Checked;
|
|
ValueChanged?.Invoke(this, e);
|
|
}
|
|
}
|
|
}
|