小编Sam*_*vdd的帖子

我web-api返回一个用户对象.在那个对象中有一个DateTime属性.当我在我的应用程序中读取它时,我得到一个错误,因为代表DateTime的字符串无效,它丢失了\Date ...

{System.Runtime.Serialization.SerializationException:反序列化User类型的对象时出错.DateTime内容'1984-10-02T01:00:00'不以'/ Date('和'以'结尾'开头,如JSON所要求的那样.--->

public static async Task<User> GetUser(string email)
    {
        try
        {
            using (HttpClient client = new HttpClient())
            {
                HttpResponseMessage response = await client.GetAsync(url + "?email="+email);
                if (response.IsSuccessStatusCode)
                {
                    string content = await response.Content.ReadAsStringAsync();
                    User user = DataService.Deserialize<User>(content);
                    return user;
                }
                return null;
            }
        }
        catch (Exception ex)
        {
            return null;
        }
    }

这是我用来反序列化的方法.

public static T Deserialize<T>(string json) {
        try
        {
            var _Bytes = Encoding.Unicode.GetBytes(json);
            using (MemoryStream _Stream = new MemoryStream(_Bytes))
            {

                var …

我有多个Listviews,每个Listviews都绑定了自己的itemsource.但我只有1个选定项目.

所以例如我有5个列表框,(Monday, Tuesday, ...)每个列表框都有自己的itemssource (MondayList, TuesdayList, ...).这些Listviews SelectedItem属性中的每一个都绑定到属性'CurrentToDo'.

问题是,如果我在星期一选择一个,然后在星期二选择一个,他们都被选中.

因此,在所有列表视图中只能选择一个项目,请帮忙.

<UserControl.Resources>        
    <Style x:Key="ListViewItemStyleToDo" TargetType="{x:Type ListViewItem}">
        <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}"/>
    </Style>

    <GridView x:Key="ViewBase1" x:Shared="False" >
        <GridViewColumn Header="" Width="30">
            <GridViewColumn.CellTemplate>
                <DataTemplate>
                    <CheckBox IsChecked="{Binding IsSelected, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}}" />
                </DataTemplate>
            </GridViewColumn.CellTemplate>
        </GridViewColumn>
        <GridViewColumn Header="Subject" Width="auto" DisplayMemberBinding="{Binding Subject}" />
    </GridView>
</UserControl.Resources>

<ListView Grid.Row="1"  ItemsSource="{Binding MondayList}" SelectedItem="{Binding CurrentToDo, Mode=TwoWay}" SelectionMode="Single" ItemContainerStyle="{DynamicResource ListViewItemStyleToDo}" View="{DynamicResource ViewBase1}" />

<ListView Grid.Row="3"  ItemsSource="{Binding TuesdayList}" SelectedItem="{Binding CurrentToDo,Mode=TwoWay}" SelectionMode="Single" ItemContainerStyle="{DynamicResource ListViewItemStyleToDo}" View="{DynamicResource ViewBase1}"  /> …

我在我的应用程序中有TextBlocks和Comboboxes我希望Textblock前景为白色,Combobox前景为Black.

我尝试的是:

    <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<Style TargetType="{x:Type TextBlock}">
    <Setter Property="Foreground" Value="White" />
</Style>
<Style TargetType="{x:Type ComboBox}">
    <Setter Property="Foreground" Value="Red" />
</Style>
</ResourceDictionary>



<Grid Background="Black">
    <TextBlock Height="23" HorizontalAlignment="Left" Margin="27,30,0,0" Name="textBlock1" Text="TextBlock" VerticalAlignment="Top" />
    <ComboBox Height="23" HorizontalAlignment="Left" Margin="12,99,0,0" Name="comboBox1" VerticalAlignment="Top" Width="120" />
</Grid>

但是组合框前景仍然是白色如何覆盖组合框中的TextBlock前景？(在CSS中这很容易,但在WPF中不知道)

如果我删除TextBlock的样式,其他所有内容都会改变,但是当我把样式放回去时,每个前景都是白色的.