Здравствуйте. Вот поделился со мной 1 человек компонентом NumericUpDown для WPF. Выглядит убого (самостоятельно нужно делать шаблон), но зато работает как надо. Вот я не могу никак сделать так, чтобы можно было менять MinValue и MaxValue.
http://narod.ru/disk/23401719000/numericUpDown.rar.html
| Код |
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace CustomControlLibrary
{
public partial class NumericUpDown : Control
{
public NumericUpDown()
{
InitializeCommands();
}
static NumericUpDown()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(NumericUpDown),
new FrameworkPropertyMetadata(typeof(NumericUpDown)));
}
public static decimal Value
{
get { return (decimal)GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
public static readonly DependencyProperty ValueProperty =
DependencyProperty.Register(
"Value", typeof(decimal), typeof(NumericUpDown),
new FrameworkPropertyMetadata(MinValue, new PropertyChangedCallback(OnValueChanged),
new CoerceValueCallback(CoerceValue)));
private static object CoerceValue(DependencyObject element, object value)
{
decimal newValue = (decimal)value;
NumericUpDown control = (NumericUpDown)element;
newValue = Math.Max(MinValue, Math.Min(MaxValue, newValue));
return newValue;
}
private static void OnValueChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
NumericUpDown control = (NumericUpDown)obj;
RoutedPropertyChangedEventArgs<decimal> e = new RoutedPropertyChangedEventArgs<decimal>(
(decimal)args.OldValue, (decimal)args.NewValue, ValueChangedEvent);
control.OnValueChanged(e);
}
public static readonly RoutedEvent ValueChangedEvent = EventManager.RegisterRoutedEvent(
"ValueChanged", RoutingStrategy.Bubble,
typeof(RoutedPropertyChangedEventHandler<decimal>), typeof(NumericUpDown));
public event RoutedPropertyChangedEventHandler<decimal> ValueChanged
{
add { AddHandler(ValueChangedEvent, value); }
remove { RemoveHandler(ValueChangedEvent, value); }
}
protected virtual void OnValueChanged(RoutedPropertyChangedEventArgs<decimal> args)
{
RaiseEvent(args);
}
#region Commands
public static RoutedCommand IncreaseCommand
{
get
{
return _increaseCommand;
}
}
public static RoutedCommand DecreaseCommand
{
get
{
return _decreaseCommand;
}
}
private static void InitializeCommands()
{
_increaseCommand = new RoutedCommand("IncreaseCommand", typeof(NumericUpDown));
CommandManager.RegisterClassCommandBinding(typeof(NumericUpDown), new CommandBinding(_increaseCommand, OnIncreaseCommand));
CommandManager.RegisterClassInputBinding(typeof(NumericUpDown), new InputBinding(_increaseCommand, new KeyGesture(Key.Up)));
_decreaseCommand = new RoutedCommand("DecreaseCommand", typeof(NumericUpDown));
CommandManager.RegisterClassCommandBinding(typeof(NumericUpDown), new CommandBinding(_decreaseCommand, OnDecreaseCommand));
CommandManager.RegisterClassInputBinding(typeof(NumericUpDown), new InputBinding(_decreaseCommand, new KeyGesture(Key.Down)));
}
private static void OnIncreaseCommand(object sender, ExecutedRoutedEventArgs e)
{
NumericUpDown control = sender as NumericUpDown;
if (control != null)
{
control.OnIncrease();
}
}
private static void OnDecreaseCommand(object sender, ExecutedRoutedEventArgs e)
{
NumericUpDown control = sender as NumericUpDown;
if (control != null)
{
control.OnDecrease();
}
}
protected virtual void OnIncrease()
{
Value++;
}
protected virtual void OnDecrease()
{
Value--;
}
private static RoutedCommand _increaseCommand;
private static RoutedCommand _decreaseCommand;
#endregion
private const decimal MinValue = 0, MaxValue = 100;
}
}
|
Надо, чтобы для каждого экземпляра этого объекта задавались свои значения. Потом выложу сюда готовый компонент. Главное помогите кто нибудь.
Изменение этого:
| Код |
private const decimal MinValue = 0, MaxValue = 100;
|
На это:
| Код |
private decimal MinValue = 0, MaxValue = 100;
|
Не помогает. |