小编Jos*_*nel的帖子

有谁知道为什么这段代码不起作用:

public class CollectionViewModel : ViewModelBase {  
    public ObservableCollection<EntityViewModel> ContentList
    {
        get { return _contentList; }
        set 
        { 
            _contentList = value; 
            RaisePropertyChanged("ContentList"); 
            //I want to be notified here when something changes..?
            //debugger doesn't stop here when IsRowChecked is toggled
        }
     }
}

public class EntityViewModel : ViewModelBase
{

    private bool _isRowChecked;

    public bool IsRowChecked
    {
        get { return _isRowChecked; }
        set { _isRowChecked = value; RaisePropertyChanged("IsRowChecked"); }
    }
}

ViewModelBase包含所有东西RaisePropertyChanged等等,它除了这个问题以外的所有其他工作..

我有一个这样的课:

public class PersonViewModel : ViewModelBase //Here is the INotifyPropertyChanged Stuff
{
    public PersonViewModel(Person person)
    {
        PersonEntity = person;
    }

    public Person PersonEntity { 
        get { return PersonEntity.Name; }
        private set { PersonEntity.Name = value; RaisePropertyChanged("PersonEntity");
    }

    public string Name { 
        get { return PersonEntity.Name; }
        set { PersonEntity.Name = value; RaisePropertyChanged("Name");
    } 
    public int Age{ 
        get { return PersonEntity.Age; }
        set { PersonEntity.Age= value; RaisePropertyChanged("Age");
    } 

    public void ChangePerson(Person newPerson)
    {
        //Some Validation..
        PersonEntity = newPerson;
    }

我的TextBoxes绑定到ViewModel的Name和Age.如果我在ViewModel中更改_person对象,我是否必须再次为每个属性调用一个RaisePropertyChanged,或者是否有办法自动执行此操作(在我的concret示例中,我有大约15个属性..)？

谢谢你的帮助. …

我正在尝试在C#中为WPF DataBinding创建一个Observable Dictionary Class.我在这里找到了Andy的一个很好的例子:双向数据绑定在WPF中的字典

据此,我试图将代码更改为以下内容:

class ObservableDictionary : ViewModelBase
{
    public ObservableDictionary(Dictionary<TKey, TValue> dictionary)
    {
        _data = dictionary;
    }

    private Dictionary<TKey, TValue> _data;

    public Dictionary<TKey, TValue> Data
    {
        get { return this._data; }
    }

    private KeyValuePair<TKey, TValue>? _selectedKey = null;
    public KeyValuePair<TKey, TValue>? SelectedKey
    {
        get { return _selectedKey; }
        set
        {
            _selectedKey = value;
            RaisePropertyChanged("SelectedKey");
            RaisePropertyChanged("SelectedValue");
        }
    }

    public TValue SelectedValue
    {
        get
        {
            return _data[SelectedKey.Value.Key];
        }
        set
        {
            _data[SelectedKey.Value.Key] = value;
            RaisePropertyChanged("SelectedValue");
        }
    }
}

}

不幸的是我仍然不知道如何传递"一般"字典对象..任何想法？ …

有谁知道如何在屏幕中心放置一个弹出控件？

谢谢!

有谁知道如何禁用文本包装RichTextBox？例如,如果我有一个不适合窗口的大字符串,RichTextBox则将字符串中无法显示新行的部分放置.我想禁用它(并且仅通过使用它使其可见Scrollbar).

非常感谢.

干杯

有谁知道是否有一个隐藏GridViewColumn的选项,如下所示:

<ListView.View>
    <GridView>
        <GridViewColumn Header="Test" IsVisible="{Binding Path=ColumnIsVisible}" />
    </GridView>
<ListView.View>

非常感谢!

编辑:为清楚起见

不幸的是,没有"IsVisible"属性.我正在寻找一种方法来创造它.

编辑:基于反馈的解决方案如下:

<GridViewColumn DisplayMemberBinding="{Binding Path=OptionColumn1Text}" 
                Width="{Binding Path=SelectedEntitiy.OptionColumn1Width}">
    <GridViewColumnHeader Content="{Binding Path=SelectedEntitiy.OptionColumn1Header}" IsEnabled="{Binding Path=SelectedEntitiy.OptionColumn1Width, Converter={StaticResource widthToBool}}" />
</GridViewColumn>

public class WidthToBooleanConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return (int)value > 0;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

谢谢大家!
干杯

我想做以下事情:

public List<Users> PreLoadedUserList { get; set; }
public List<RowEntries> SomeDataRowList { get; set; }

public class Users
{
    public int Age { get; set; }
    public string Name { get; set; }
}
public class SomeDataRowList 
{
    public int UserAge { get; set;
}

现在我的(WPF Toolkit)DataGrid看起来像这样:

<my:DataGrid AutoGenerateColumns="False" MinHeight="200" 
             ItemsSource="{Binding Path=SomeDataRowList}">
    <my:DataGridComboBoxColumn Header="Age" 
                               ItemsSource="{Binding Path=PreLoadedUserList}" 
                               DisplayMemberPath="Name" 
                               SelectedValueBinding="{Binding Path=UserAge}"/>

</my:DataGrid>

现在我的问题是,PreLoadedUserList在ItemSource(SomeDataRowList)之外,我不知道如何绑定到它之外的东西.我真正想要它: - 在ComboBox中显示PreLoadedUserList - 将(RowEntries)SelectedItem.UserAge的值设置为所选ComboboxItem.Age的值

如果我的解释太奇怪,请告诉我:-)

谢谢,干杯

我在其中一列上有一个带有datetime64对象的pandas数据帧.

    time    volume  complete    closeBid    closeAsk    openBid openAsk highBid highAsk lowBid  lowAsk  closeMid
0   2016-08-07 21:00:00+00:00   9   True    0.84734 0.84842 0.84706 0.84814 0.84734 0.84842 0.84706 0.84814 0.84788
1   2016-08-07 21:05:00+00:00   10  True    0.84735 0.84841 0.84752 0.84832 0.84752 0.84846 0.84712 0.8482  0.84788
2   2016-08-07 21:10:00+00:00   10  True    0.84742 0.84817 0.84739 0.84828 0.84757 0.84831 0.84735 0.84817 0.847795
3   2016-08-07 21:15:00+00:00   18  True    0.84732 0.84811 0.84737 0.84813 0.84737 0.84813 0.84721 0.8479  0.847715
4   2016-08-07 21:20:00+00:00   4   True    0.84755 0.84822 0.84739 0.84812 0.84755 0.84822 …

如何在DataTemplate中获取元素的绑定路径？我的XAML看起来像这样:

<GridViewColumn Header="Double">
    <GridViewColumn.CellTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding TotalValues, Mode=OneWay, StringFormat=\{0:0\'0.00\}, Converter={StaticResource GridValueConverter}}" TextAlignment="Right" Width="auto"/>
        </DataTemplate>
    </GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Comments" DisplayMemberBinding="{Binding Path=Comments, Mode=OneWay}" Width="auto"/>

获取"普通"GridViewColumnHeader.DisplayMemberBinding的绑定路径是

var field = (string)((Binding)((GridViewColumnHeader)e.OriginalSource).Column.DisplayMemberBinding).Path.Path;

如何才能获得相同的绑定路径TextBlock.Text？

我有一个

List<DetailObject> someList;

看起来像这样:

    public class DetailObject
    {
        public string Titel { get; set; }
        public int Value1 { get; set; }
        public int Value2 { get; set; }
        public int Value3 { get; set; }
    }

有谁知道我如何使用(使用DataGrid.AutoGenerateColumns ="True")'string Titel'的值作为RowHeader和其他成员作为"行"内容？没有任何修改,它会显示"Titel"作为ColumnHeader并将Titel的值显示为行,将"Value1"的dito显示为ColumnHeader,将Value1的值显示为Rows等.

谢谢你的帮助!

干杯

编辑:为了更好地理解,这就是我所拥有的

[Titel]       [Value1]       [Value2]       [Value3]
[Item1.Titel] [Item1.Value1] [Item1.Value2] [Item1.Value3] 
[Item2.Titel] [Item2.Value1] [Item2.Value2] [Item2.Value3] 
[Item3.Titel] [Item3.Value1] [Item3.Value2] [Item3.Value3] 

这就是我要找的东西:

[Item1.Titel]  [Item2.Titel]  [Item3.Titel] 
[Item1.Value1] [Item2.Value1] [Item3.Value1]
[Item1.Value2] [Item2.Value2] [Item3.Value2]
[Item1.Value3] [Item2.Value3] [Item3.Value3]

EDIT2:我在这里找到了一个不错的方法:http: //codemaverick.blogspot.com/2008/02/transpose-datagrid-or-gridview-by.html