为什么我不能像这样编码
<Border Width="130" Height="70">
<Border.Triggers>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0">
<Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorder}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="200">
<Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorderInactive}"/>
</DataTrigger>
</Border.Triggers>
</Border>
我收到这个错误
Failed object initialization (ISupportInitialize.EndInit).
Triggers collection members must be of type EventTrigger.
Error at object '4_T' in markup file
我做错了什么错误的帮助.
我在窗口中托管了一个wpf页面.但是当我试图使用它时,我得到Null异常.它工作,然后我在另一种方法中使用此代码,但不是在alla方法中为什么会这样？请指教.
NewPage page = new NewPage ();
Window w = Window.GetWindow(this.Parent);
w.Content = page;
编辑:
继承人完整的代码:
public HandOverListPage() {
InitializeComponent();
_settings = new Settings();
}
public void ShowCurrentInUseAssignment() {
_currentDoc = (App.Current as App).SelectedHandOverDoc;
var r = from item in (App.Current as App).SelectedHandOverDoc.Items
where item.Status != 20
select item;
if(r.Count() == 0) {
//Report assignment to QP with status finished
ReportAssignment();
HandOverPage page = new HandOverPage();
Window w = Window.GetWindow(this.Parent);
w.Content = page;
return;
} else {
ICollectionView view = …我正在制作一个可观察的课程.Add方法工作正常.但后来我试图调用Remove()方法我得到这个错误:
"添加的项目不会出现在给定的索引'0'"
但是我将NotifyCollectionChangedAction枚举设置为Remove,如下面的代码所示.
public class ObservableOrderResponseQueue : INotifyCollectionChanged, IEnumerable<OrderResponse>
{
public event NotifyCollectionChangedEventHandler CollectionChanged;
private List<OrderResponse> _list = new List<OrderResponse>();
public void Add(OrderResponse orderResponse)
{
this._list.Add(orderResponse);
if (CollectionChanged != null)
{
CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, orderResponse, 0));
}
}
public void RemoveAt(int index)
{
OrderResponse order = this._list[index];
this._list.RemoveAt(index);
if (CollectionChanged != null)
{
CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, order, index));
}
}
public void Remove(OrderResponse orderResponse)
{
var item = _list.Where(o => o.OrderDetail.TrayCode == orderResponse.OrderDetail.TrayCode).FirstOrDefault();
int index = _list.IndexOf(item);
this._list.RemoveAt(index);
if (CollectionChanged …为什么我有这个错误以及如何解决它.感谢帮助
错误4无法将lambda表达式转换为类型'System.Delegate',因为它不是委托类型
void provider_GetAssignmentsComplete(object sender, QP_Truck_Model.Providers.GetAssignmentsEventArgs e) {
lvMyAssignments.Dispatcher.BeginInvoke(() =>
{
lvMyAssignments.ItemsSource = e.HandOverDocs;
});
}
我正在尝试解决死锁问题.当同时有超过10个用户时,我的应用程序会一直出现死锁.我尝试过使用SQL分析器,但无法弄明白.
问题是,在SQL Profiler中,我已经检查过使用死锁图事件.但是当我运行跟踪时,事件从未被记录.我可以看到有很多死锁和死锁链,但没有死锁图.请指教.感谢帮助
我正在尝试将已安装的 Windows服务设置为C#中的自动延迟启动.如何设置Windows服务
Automatic (Delayed Start)
无法在ServiceStartMode枚举中找到该值.
编辑:1
public class ServiceAutoStartInfo
{
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
private struct SERVICE_DELAYED_AUTO_START_INFO
{
public bool fDelayedAutostart;
}
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool ChangeServiceConfig2(IntPtr hService, int dwInfoLevel, IntPtr lpInfo);
// Service configuration parameter
const int SERVICE_CONFIG_DELAYED_AUTO_START_INFO = 3;
public bool ChangeDelayedAutoStart(IntPtr hService, bool delayed)
{
// Validate service handle
if (hService != IntPtr.Zero)
{
// Create
SERVICE_DELAYED_AUTO_START_INFO info = new SERVICE_DELAYED_AUTO_START_INFO();
// Set the DelayedAutostart property …您正在使用ISingleResult与存储过程.如果Isingler是空的,我如何检查C#.因为有时候SP什么也不返回,有时则返回数据.
无论如何,ISingleResult包含多少行.感谢帮助.
我想知道如何删除弹出窗口中的一小部分边框。我在图片中用红色箭头标记了要移除的部分。谢谢你的帮助。
这是 Xaml 代码
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="OuterBorder"/>
<Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" Stroke="{TemplateBinding BorderBrush}"/>
<Rectangle x:Name="InnerBorder"/>
<DockPanel>
<ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="4,0,6,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" Fill="{TemplateBinding Foreground}" FlowDirection="LeftToRight" Margin="7,0,0,0" Visibility="Collapsed" VerticalAlignment="Center"/>
<ContentPresenter ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</DockPanel>
<Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="0" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Bottom" VerticalOffset="-1">
<Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
<Border x:Name="SubMenuBorder" BorderBrush="{StaticResource ResourceKey=MenuBorderColorBrush}" BorderThickness="1" Background="{StaticResource MenuOpenBackgroundColorBrush}">
<ScrollViewer x:Name="SubMenuScrollViewer" Margin="1,0" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type …我正在使用Phil Sturgeon的REST服务器.我无法设置基本或摘要式身份验证.当调用方法时,我得到提示用户名和密码的对话框,即使我用正确的用户名和密码写它也不会接受它.我该如何解决这个问题？是我的网络主机不允许吗？
这就是我在rest.php中设置auth的方法:其余的是默认的.
$config['rest_auth'] = 'Basic';
$config['auth_source'] = '';
$config['rest_valid_logins'] = array('admin' => 'password');
像这样的 Create 方法是否正确？或者我应该在服务内创建用户。这是否破坏了 DDD 概念？
对于这种情况，最佳做法是什么？
注意：我也使用 DI。
public class User : HistoryBase, IAggregateRoot
{
private IEnumerable<Role> _roles = new List<Role>();
public string Name { get; protected set; }
public string Lastname { get; protected set; }
public string Email { get; protected set; }
public string Password { get; protected set; }
public string EmployeeNumber { get; protected set; }
public bool Active { get; protected set; }
public int SiteID { get; protected set; }
public IEnumerable<Role> Roles …