[英]WPF extended toolkit PropertyGrid DateTime property updating issue
There is a property of type DateTime in a propertygrid. propertygrid中有一个DateTime类型的属性。 Here is a code: 这是一个代码:
<xctk:PropertyGrid x:Name="_propertyGrid" Margin="10" AutoGenerateProperties="True" SelectedObject="{Binding}">
</xctk:PropertyGrid>
public class DateEditor : Xceed.Wpf.Toolkit.PropertyGrid.Editors.ITypeEditor
{
public FrameworkElement ResolveEditor(Xceed.Wpf.Toolkit.PropertyGrid.PropertyItem propertyItem)
{
DateTimeUpDown temp1 = new DateTimeUpDown();
temp1.Format = DateTimeFormat.Custom;
temp1.FormatString = "dd.MM.yyyy hh:m:ss";
//create the binding from the bound property item to the editor
var _binding = new Binding("Value"); //bind to the Value property of the PropertyItem
_binding.Source = propertyItem;
_binding.ValidatesOnExceptions = true;
_binding.ValidatesOnDataErrors = true;
_binding.Mode = BindingMode.TwoWay;
BindingOperations.SetBinding(temp1, DateTimeUpDown.TextProperty, _binding);
return temp1;
}
}
public class CustomAttributEditorPerson : INotifyPropertyChanged
{
private DateTime FDate;
[Category("Information")]
[DisplayName("Date")]
//This custom editor is a Class that implements the ITypeEditor interface
[RefreshProperties(RefreshProperties.All)]
[Editor(typeof(FirstNameEditor), typeof(FirstNameEditor))]
public DateTime Date
{
get
{
return this.FDate;
}
set
{
this.FDate = value;
NotifyPropertyChanged("Date");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(String info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}
}
public partial class MainWindow : Window
{
CustomAttributEditorPerson temp = new CustomAttributEditorPerson();
public MainWindow()
{
InitializeComponent();
temp.Date = new DateTime(2020, 7, 7, 0, 1, 2);
_propertyGrid.SelectedObject = temp;
}
When app is started I see current date instead of required 7.7.2020. 应用启动时,我看到的是当前日期,而不是要求的7.7.2020。 Changing of the property temp.Date doesn't reflected in propertygrid. 属性temp.Date的更改不会反映在propertygrid中。 The following code doesn't lead to the result: 以下代码不会导致结果:
private void Button_Click_1(object sender, RoutedEventArgs e)
{
temp.Date = new DateTime(2030, 8, 7, 0, 1, 2);
_propertyGrid.Update();
}
What should be done to reflect the changes of tempDate in propertygrid? 应该采取什么措施来反映tempDate在propertygrid中的变化? Thanks for assistance. 感谢您的协助。
I reproduced it with your code, and it works for me. 我用您的代码复制了它,并且对我有用。 Here is my code: 这是我的代码:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication1"
xmlns:wt="http://schemas.xceed.com/wpf/xaml/toolkit"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<wt:PropertyGrid x:Name="_propertyGrid" Margin="10" AutoGenerateProperties="True" SelectedObject="{Binding}"/>
<Button Content="!!" Width="100" Height="100" Click="Button_Click"/>
</Grid>
public partial class MainWindow : Window
{
CustomAttributEditorPerson temp = new CustomAttributEditorPerson();
public MainWindow()
{
InitializeComponent();
temp.Date = new DateTime(2020, 7, 7, 0, 1, 2);
_propertyGrid.SelectedObject = temp;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
temp.Date = new DateTime(2030, 8, 7, 0, 1, 2);
_propertyGrid.Update();
}
}
public class CustomAttributEditorPerson : INotifyPropertyChanged
{
private DateTime FDate;
[Category("Information")]
[DisplayName("Date")]
//This custom editor is a Class that implements the ITypeEditor interface
[RefreshProperties(RefreshProperties.All)]
public DateTime Date
{
get
{
return this.FDate;
}
set
{
this.FDate = value;
NotifyPropertyChanged("Date");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(String info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}
}
The only difference is that I don't have a [Editor(typeof(FirstNameEditor), typeof(FirstNameEditor))]
attribute on my Date property. 唯一的区别是,我的Date属性没有[Editor(typeof(FirstNameEditor), typeof(FirstNameEditor))]
属性。 I would check if that doesn't mess with your data. 我会检查是否不会干扰您的数据。
Also, if you're using binding on SelectedObject
property, I think it should be bound to Date
property in your code-behind. 另外,如果您在SelectedObject
属性上使用绑定,则我认为应该将其绑定到后台代码中的Date
属性。 I see, you already have INotifyPropertyChanged
implemented on your "model", so you shouldn't need a _propertyGrid.Update()
, because Binding should handle the updates for you. 我知道,您已经在“模型”上实现了INotifyPropertyChanged
,因此您不需要_propertyGrid.Update()
,因为Binding应该为您处理更新。
Make sure you set the DataContext to the code-behind. 确保将DataContext设置为隐藏代码。
After reading your comment, I took a look at the ResolveEditor
method and I think I have solution (tested it on my machine and it works). 阅读您的评论后,我看了看ResolveEditor
方法,我认为我已经解决了(在我的机器上对其进行了测试并且可以工作)。 Simply in your BindingOperations.SetBinding
method change DateTimeUpDown.TextProperty
to DateTimeUpDown.ValueProperty
. 只需在BindingOperations.SetBinding
方法BindingOperations.SetBinding
DateTimeUpDown.TextProperty
更改为DateTimeUpDown.ValueProperty
。 I'm not sure why it's that way (couldn't find documentation), but i think that the Text property's value is overriden by the Value's value, which is set to null at the time of calling the SetBinding
. 我不确定为什么会这样(找不到文档),但是我认为Text属性的值被Value的值覆盖,该值在调用SetBinding
时设置为null。
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