小编Mic*_*per的帖子

关于等待任务完成和线程同步的主题.

我目前有一个迭代,我已经包含在Parallel.ForEach中.在下面的例子中,我在评论中提出了一些关于如何最好地处理循环的优雅终止的问题(.NET 4.0);

private void myFunction()
    {

        IList<string> iListOfItems = new List<string>();
        // populate iListOfItems

        CancellationTokenSource cts = new CancellationTokenSource();

        ParallelOptions po = new ParallelOptions();
        po.MaxDegreeOfParallelism = 20; // max threads
        po.CancellationToken = cts.Token;

        try
        {
            var myWcfProxy = new myWcfClientSoapClient();

            if (Parallel.ForEach(iListOfItems, po, (item, loopsate) =>
            {
                try
                {
                    if (_requestedToStop)
                        loopsate.Stop();
                    // long running blocking WS call, check before and after
                    var response = myWcfProxy.ProcessIntervalConfiguration(item);
                    if (_requestedToStop)
                        loopsate.Stop();

                    // perform some local processing of the response object
                } …

我有点陷入困境,为什么我似乎无法通过下面的语句获得插入行的"新标识".SCOPE_IDENTITY()只返回null.

declare @WorkRequestQueueID int
declare @LastException nvarchar(MAX)
set @WorkRequestQueueID = 1
set @LastException = 'test'

set nocount off

DELETE dbo.WorkRequestQueue
OUTPUT
        DELETED.MessageEnvelope,
        DELETED.Attempts,
        @LastException,
        GetUtcdate(), -- WorkItemPoisened datetime
        DELETED.WorkItemReceived_UTC
    INTO dbo.FaildMessages
FROM dbo.WorkRequestQueue
WHERE
    WorkRequestQueue.ID = @WorkRequestQueueID

IF @@ROWCOUNT = 0 
  RAISERROR ('Record not found', 16, 1) 

SELECT Cast(SCOPE_IDENTITY() as int) 

任何援助都将非常感激.

现在我使用这样的解决方法.

declare     @WorkRequestQueueID int
declare @LastException nvarchar(MAX)
set @WorkRequestQueueID = 7
set @LastException = 'test'

set nocount on
set xact_abort on 

DECLARE @Failed TABLE 
(
    MessageEnvelope …

将 SOAP 字段元素留空会导致本机类型的强制转换错误。（遗憾的是不能使用 xsi:nil="true" 由于客户端限制）

将 WCF 合同本机类型标记为 nullable<> 似乎不足以阻止向客户端返回以下错误。

字符串 '' 不是有效的布尔值。在 System.Xml.XmlConvert.ToBoolean(String s) 在 System.Xml.XmlConverter.ToBoolean(String value) System.FormatException

有谁知道指示 DataContractSerializer 将要反序列化的空元素转换为 null 的最佳方法吗？

我的示例 WCF 服务合同；

[ServiceContract()]
public interface IMyTest
{
    [OperationContract]
    string TestOperation(TestRequest request);
}

[ServiceBehavior()]
public class Settings : IMyTest
{
    public string TestOperation(TestRequest request)
    {
        if (request.TestDetail.TestBool.HasValue)
            return "Bool was specified";
        else
            return "Bool was null";
    }

}

[DataContract()]
public class TestRequest
{
    [DataMember(IsRequired = true)]
    public int ID { get; set; }

    [DataMember(IsRequired = true)] …

我试图在PowerGui 3.0中点源脚本文件,但我得到的只是;

术语".\ PowerShell.Common.ps1"未被识别为cmdlet,函数,脚本文件或可操作程序的名称.检查名称的拼写,或者如果包含路径,请验证路径是否正确,然后重试.在D:\ TFS\SharePoint\Dev\Deploy\AutoSPInstaller\SP2010\AutoSPInstaller\AutoSPInstallerFunctionsCustom.ps1:6 char:31 +.\.PowerShell.Common.ps1 <<<< + CategoryInfo:ObjectNotFound:(.\ PowerShell.Common. ps1:String)[],CommandNotFoundException + FullyQualifiedErrorId:CommandNotFoundException

并且powerGui随后不在所述文件中提供我的脚本功能 - 在父脚本的上下文敏感列表中.

文件"PowerShell.Common.ps1"与AutoSPInstallerFunctionsCustom.ps1位于同一目录中.感谢您的帮助