小编joh*_*y g的帖子

我遇到过一些非常奇怪,简单的WPF应用程序

<Window x:Class="ListBoxSelection.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <ListBox ItemsSource="{Binding Path=Strings}" SelectionMode="Single"/>
    </Grid>
</Window>

代码背后

public class ViewModel
{
    public List<string> Strings { get; set; }

    public ViewModel ()
    {
        Strings = new List<string> ();
        Strings.Add ("A");
        // add many items ...
        Strings.Add ("A");
    }
}

/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public MainWindow ()
    {
        InitializeComponent ();

        DataContext = new ViewModel ();
    }
}

当我点击一个项目时,

如果我继续点击项目,他们只会聚合.单击已选择的项目不执行任何操作.抓我的头,我之前有数据包列表给ListBoxes,之前从未见过这个.运行Win7(64),VS2010,行为呈现.Net 3.5,.Net 3.5 …

我感兴趣的是冒充知名的Web服务和Wcf服务进行集成测试.为此,我想在自托管环境中捕获服务元数据,自动生成服务存根和主机服务存根.

在这篇文章之后,我能够获得远程Wcf服务元数据并生成合同.但是,我在为远程Asmx Web服务做同样的事情时遇到了一些困难.

我有一套用于审查这个问题的米老鼠解决方案.

我的Asmx解决方案包含一个默认的"Hello World"Web服务,如下所示

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
public class SimpleAsmxService : System.Web.Services.WebService
{
    [WebMethod]
    public string HelloWorld () { return "Hello World"; }
}

我的Wcf解决方案包含默认的"Hello World"服务,也可在下面找到

[ServiceContract]
public interface ISimpleWcfService
{
    [OperationContract]
    string GetData(int value);

    [OperationContract]
    CompositeType GetDataUsingDataContract(CompositeType composite);
}

[DataContract]
public class CompositeType
{
    [DataMember]
    public bool BoolValue { get; set; }

    [DataMember]
    public string StringValue { get; set; }
}

public class SimpleWcfService : ISimpleWcfService
{
    public string GetData(int value) …

我是Windows Workflow [WF]的新手,并且有兴趣为业务目的评估WF.我决定通过介绍

[TestMethod]
public void TestMethod ()
{
    TextWriter writer = new StringWriter ();
    Sequence sequence = new Sequence
    {
        Activities =
        {
            // so, assigning a reference type [eg StringWriter]
            // as target is prohibited in WF4RC. what or how do
            // i assign a target? introduction cited above may
            // not be current [ie may be Beta2, not RC] so ... ?
            new WriteLine { Text = "Hello", TextWriter = writer },
            new WriteLine { Text …

为Sql Server 2005编写脚本.我正在注册一个模式

CREATE XML SCHEMA COLLECTION [dbo].[MySchema] AS N'<xsd:schema ... >'

现在,当我做出改变时,我想放弃它,打电话给

DROP XML SCHEMA COLLECTION [dbo].[MySchema]

我在开发过程中经常运行这些东西,比如

DROP ...
CREATE ... 

但是这会在Schema不存在的第一次运行时出现问题.我想做类似的事情

IF OBJECT_ID ('MySchema') IS NOT NULL
    DROP ...
CREATE ...

但OBJECT_ID ('MySchema')只是回来NULL.是否有正确的方法来测试Sql Server 2005中是否存在已注册的Xml架构集合？

muchos gracias mis amigos :)

我们有一个应用程序,其中我们有一个物化的项目数组,我们将通过Reactive管道进行处理.它看起来有点像这样

EventLoopScheduler eventLoop = new EventLoopScheduler();
IScheduler concurrency = new TaskPoolScheduler(
    new TaskFactory(
        new LimitedConcurrencyLevelTaskScheduler(threadCount)));
IEnumerable<int> numbers = Enumerable.Range(1, itemCount);

// 1. transform on single thread
IConnectableObservable<byte[]> source = 
    numbers.Select(Transform).ToObservable(eventLoop).Publish();

// 2. naive parallelization, restricts parallelization to Work 
// only; chunk up sequence into smaller sequences and process
// in parallel, merging results
IObservable<int> final = source.
    Buffer(10).
    Select(
        batch =>
        batch.
        ToObservable(concurrency).
        Buffer(10).
        Select(
            concurrentBatch =>
            concurrentBatch.
            Select(Work).
            ToArray().
            ToObservable(eventLoop)).
        Merge()).
    Merge();

final.Subscribe();

source.Connect();
Await(final).Wait();

如果你真的很想玩这个,那么替身方法就像

private async static …

如此摆弄MSBuild任务，我发现Regex元数据属性只评估一次，而不是每个项目。

例如

<!-- 
  actual items, we use standard project reference items and extend via 
  ItemDefinitionGroup. add project references through IDE to extend 
  coverage
-->
<ItemGroup>
  <ProjectReference Include="..\Example.UnitTests-x86\Example.UnitTests-x86.csproj">
    <Project>{7e854803-007c-4800-80f9-be908655229d}</Project>
    <Name>Example.UnitTests-x86</Name>
  </ProjectReference>
  <ProjectReference Include="..\Example.UnitTests\Example.UnitTests.csproj">
    <Project>{eaac5f22-bfb8-4df7-a711-126907831a0f}</Project>
    <Name>Example.UnitTests</Name>
  </ProjectReference>
</ItemGroup>

<!-- additional item properties, defined with respect to item declaring it -->
<ItemDefinitionGroup>
  <ProjectReference>
    <Isx86>
      $([System.Text.RegularExpressions.Regex]::IsMatch(%(Filename), '.*x86*'))
    </Isx86>
  </ProjectReference>
</ItemDefinitionGroup>

<!-- additional task target, invoke both x64 and x86 tasks here -->
<Target Name="AdditionalTasks">
  <Message 
    Text="%(ProjectReference.Filename) Isx86 '%(Isx86)' Inline 
    '$([System.Text.RegularExpressions.Regex]::IsMatch(%(Filename), '.*x86*'))'" 
    Importance="high" />
</Target> …