71 lines
2.1 KiB
C#
71 lines
2.1 KiB
C#
|
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 WinFormsLibrary1
|
|||
|
|
{
|
|||
|
|
public partial class UserControlIntegerInput : UserControl
|
|||
|
|
{
|
|||
|
|
private event EventHandler? _elementChanged;
|
|||
|
|
private event Action? _errorOccured;
|
|||
|
|
public string Error { get; private set; }
|
|||
|
|
public int? InputtedInteger
|
|||
|
|
{
|
|||
|
|
get
|
|||
|
|
{
|
|||
|
|
if (checkBoxNullable.Checked)
|
|||
|
|
{
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
if (textBoxInteger.Text.Equals(string.Empty) || textBoxInteger.Text == null)
|
|||
|
|
{
|
|||
|
|
throw new UncheckedNullException("Input was null, but checkbox wasnt checked");
|
|||
|
|
}
|
|||
|
|
if (Int32.TryParse(textBoxInteger.Text, out var number))
|
|||
|
|
{
|
|||
|
|
return number;
|
|||
|
|
}
|
|||
|
|
throw new UnexpectedTypeException("Input was non integer");
|
|||
|
|
}
|
|||
|
|
set
|
|||
|
|
{
|
|||
|
|
textBoxInteger.Text = value.ToString();
|
|||
|
|
checkBoxNullable.Checked = value == null;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
public event EventHandler ElementChanged
|
|||
|
|
{
|
|||
|
|
add { _elementChanged += value; }
|
|||
|
|
remove { _elementChanged -= value; }
|
|||
|
|
}
|
|||
|
|
public event Action AnErrorOccurred
|
|||
|
|
{
|
|||
|
|
add { _errorOccured += value; }
|
|||
|
|
remove { _errorOccured -= value; }
|
|||
|
|
}
|
|||
|
|
public UserControlIntegerInput()
|
|||
|
|
{
|
|||
|
|
InitializeComponent();
|
|||
|
|
Error = string.Empty;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void textBoxInteger_TextChanged(object sender, EventArgs e)
|
|||
|
|
{
|
|||
|
|
_elementChanged?.Invoke(this, e);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void checkBoxNullable_CheckedChanged(object sender, EventArgs e)
|
|||
|
|
{
|
|||
|
|
textBoxInteger.Enabled = !checkBoxNullable.Checked;
|
|||
|
|
textBoxInteger.Text = null;
|
|||
|
|
_elementChanged?.Invoke(this, e);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|