我有以下XAML:
<UserControl x:Class="EMS.Controls.Dictionary.TOCControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:EMS.Controls.Dictionary.Models"
xmlns:diagnostics="clr-namespace:System.Diagnostics;assembly=WindowsBase"
x:Name="root" >
<TreeView
x:Name="TOCTreeView"
Background="White"
Padding="3,5"
ContextMenuOpening="TOCTreeView_ContextMenuOpening"
ItemsSource="{Binding Children}" BorderBrush="{x:Null}" >
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Children, Mode=OneTime}">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<!--<ColumnDefinition Width="Auto"/>-->
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<!--<CheckBox VerticalAlignment="Center" IsChecked="{Binding IsVisible}"/>-->
<ContentPresenter Grid.Column="0" Height="16" Width="20"
Content="{Binding LayerRepresentation}" />
<!--<ContentPresenter Grid.Column="1" >
<ContentPresenter.Content>
Test
</ContentPresenter.Content>
</ContentPresenter>-->
<TextBlock Grid.Column="2" FontWeight="Normal" Text="{Binding Path=Alias, Mode=OneWay}" >
<ToolTipService.ToolTip>
<TextBlock Text="{Binding Description}" TextWrapping="Wrap"/>
</ToolTipService.ToolTip>
</TextBlock>
</Grid>
<HierarchicalDataTemplate.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Children, Mode=OneTime}">
<!--<DataTemplate>-->
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition …Run Code Online (Sandbox Code Playgroud) 绑定到Android元素上的多个属性的正确语法是什么?
我试过这样的事 local:MvxBind="{ Value StartTime, Text StartTimeText}"
其中属性StartTime和StartTime文本在ViewModel中定义,但这不起作用.值和文本是此自定义控件的属性.
ViewModel可能如下所示:
public class ViewModel
{
public DateTime StartTime{get;set;}
public string StartTimeText {get;set;}
}
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我发现了这个相关问题,但无法找到多个绑定的正确瑞士语法.有人在元素上做过多次绑定吗?
TIA.
我有一个C#项目,目标框架设置为.NET 4.5.由于某些奇怪的原因,所有引用都标有黄色警告三角形,如下所示.我试过卸载并重新加载项目.我甚至尝试手动重新添加其中一个系统引用无济于事.

我得到的警告是:
警告13找不到引用的组件"AutoMapper".Services.Contracts警告14找不到引用的组件"AutoMapper.Net4".Services.Contracts警告15找不到引用的组件"log4net".Services.Contracts警告16找不到引用的组件'Mindscape.LightSpeed'.Services.Contracts警告17找不到引用的组件'Mindscape.LightSpeed.Linq'.Services.Contracts警告18找不到引用的组件"System".Services.Contracts警告19找不到引用的组件'System.Core'.Services.Contracts警告25找不到引用的组件'System.Data'.Services.Contracts警告24找不到引用的组件'System.Data.DataSetExtensions'.Services.Contracts警告20找不到引用的组件'System.Runtime.Serialization'.Services.Contracts警告21找不到引用的组件'System.ServiceModel'.Services.Contracts警告22找不到引用的组件'System.ServiceModel.Web'.Services.Contracts警告26找不到引用的组件'System.Xml'.Services.Contracts警告23找不到引用的组件'System.Xml.Linq'.Services.Contracts
发生了什么,我该如何解决这个问题?
我试图从NuGet命令行将MvvmCross.HotTuna.CrossCore 3.0.14安装到WindowsPhone 8.0类库中.我尝试这样做时遇到的错误是:
PM> install-package MvvmCross.HotTuna.CrossCore 3.0.14
install-package : No compatible project(s) found in the active solution.
At line:1 char:1
+ install-package MvvmCross.HotTuna.CrossCore 3.0.14
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Install-Package], InvalidOperationException
+ FullyQualifiedErrorId : NuGetNoCompatibleProjects,NuGet.PowerShell.Commands.InstallPackageCommand
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在此解决方案中,我有另一个Windows Phone 8应用程序项目(目标Windows Phone OS版本设置为Windows Phone OS 8.0),其中安装了以下MvvmCross软件包.这是先前完成没有任何问题:
<packages>
<package id="MvvmCross.HotTuna.CrossCore" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.MvvmCrossLibraries" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.Plugin.File" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.Plugin.Json" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.Plugin.Location" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.Plugin.Messenger" version="3.0.14" targetFramework="wp71" />
<package id="MvvmCross.HotTuna.Plugin.Sqlite" version="3.0.14" targetFramework="wp71" …Run Code Online (Sandbox Code Playgroud) 为什么Directory.CreateDirectory在尝试创建以下路径时会抛出DirectoryNotFoundException?
"c:\\temp\\aips\\data\\prn"
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用消息表明它could not find a part of the path "c:\".
但是,如果通过以下路径"c:\\temp\\aips\\data\\power",则返回成功.
路径直接从Visual Studio调试器复制,因此反斜杠分隔符.
在我的系统上,该文件夹c:\temp\aips\data已存在.
我有以下WCF客户端配置:
<basicHttpBinding>
<binding name="basicHttpOCCWS" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="100000000" maxBufferPoolSize="524288"
maxReceivedMessageSize="100000000" messageEncoding="Text"
textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192"
maxArrayLength="16384" maxBytesPerRead="4096"
maxNameTableCharCount="16384" />
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic" />
</security>
</binding>
</basicHttpBinding>
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在代码中,我按如下方式设置用户名和密码:
client.ClientCredentials.UserName.UserName = _cacledUserId;
client.ClientCredentials.UserName.Password = _cachedPassword;
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但是,在Tomcat上运行的Web服务返回错误:
"在安全上下文中找不到身份验证对象."
当我查看HTTP标头时,它缺少凭据信息,如下所示:
POST /occ600webservice/services/OCC_WS HTTP/1.1
Content-Type: application/soap+xml; charset=utf-8; action=""
Host: 192.54.173.130:8080
Content-Length: 2223
Expect: 100-continue
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为什么我的凭据没有被发送?
TIA.
克劳斯
我有以下代码:
var accidents = text.Skip(NumberOfAccidentsLine + 1).Take(numberOfAccidentsInFile).ToArray();
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事故是一系列的字符串.
我想将Linq转换从字符串数组转换为Accident对象数组,如下所示:
return accidents.Select(t => new Accident() {Id = i, Name = t.Replace("\"", string.Empty)}).ToArray();
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如何使用Linq从事故阵列中检索索引i还是我必须上学?
要订阅 StackExchange.Redis.ISubscriber 的实例,需要调用以下 API:
void Subscribe(RedisChannel channel, Action<RedisChannel, RedisValue> handler, CommandFlags flags = CommandFlags.None);
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问题是,如果有人使用与简单字符串相同的通道名称调用同一行代码,例如“TestChannel”,会发生什么?
ISubscriber 是否检查字符串是否相等,或者它只是不在乎,因此我们将有两个订阅?
在WPF中按下并按住鼠标左键时,如何重复执行操作?
UIElement.PreviewMouseLeftButtonDown事件的以下事件处理程序无法完成工作:
private void BaseButtonRight_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
// keep performing action while mouse left button is pressed.
// Checking e.ButtonState works only for one click
}
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执行甚至没有进入while循环,并且当释放鼠标左键时调用处理程序!
是否需要将synchronize关键字应用于实现单例模式的类的每个方法?
public class Singleton {
private Singleton(){}
public synchronized static Singleton getInstance()
{
if(instance == null)
instance = new Singleton ();
return instance;
}
public void DoA(){
}
}
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由于Singletons不公开公共构造函数并且getInstance()方法是同步的,因此不需要同步方法DoA和Singleton类公开的任何其他公共方法.
这个推理是否正确?
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android ×1
binding ×1
data-binding ×1
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java ×1
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