问题列表 - 第32851页

我有启用Service Broker的DataBase.然后我想在程序中从其他数据库的备份恢复我的数据库,但在恢复(我恢复现有数据库名称)后,我的方法,whitch启用Service Broker,放置此错误:

    Msg 9772, Level 16, State 1, Line 1
The Service Broker in database "ServeDB2" cannot be enabled because there is already an enabled Service Broker with the same ID.
Msg 5069, Level 16, State 1, Line 1
ALTER DATABASE statement failed.

这是我的方法:

public void TurnOnBroker()
{
    if (!this.database.BrokerEnabled)
    {
        this.server.KillAllProcesses(this.database.Name);
        this.database.BrokerEnabled = true;
        this.database.Alter();
        RefreshConnection();
    }
}

我应该在这里解决什么？有什么建议吗？

我正在寻找一些关于机器学习的入门级帖子.任何人都可以为这个主题的新人提出任何建议吗？

在"显示"页面中有一些用于就地编辑模型的选项,即无需在"编辑"页面中加载表单.例如,请参阅http://www.ruby-toolbox.com/categories/rails_in_place_editing.html.

有没有人在Rails 3中使用任何这些选项(或其他)的经验？任何指针或建议？

就我而言,我有一个相当长的形式,由可变数量的项目组成.从可用性的角度来看,在同一页面中编辑这些项目中的文本是很有意义的,而不需要为将每个用户发送到特定项目的编辑页面的每个项目的编辑按钮.

在Java中我们有Socket,BufferedReader和BufferedWriter,但C#中的等价物是什么？

Socket socket;
socket = new Socket(address, port);
reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));

我无法理解为什么这段代码无法编译:

class A {
    public static void main(String[] args) {
        System.out.println("hi");
    }
}

private class B {
    int a;
}

我将内容保存在一个名为的文件中A.java- 我收到一个错误:

modifier private not allowed here // where I have defined class B

当我尝试B作为私有和受保护时,会发生这种情况.有人可以解释一下这背后的原因吗？

谢谢 !

有没有办法用Spring.NET配置Acknowledgements？

在代码中它看起来像这样:

var msgQ = new MessageQueue(OrdersQueueName)
           {
             DefaultPropertiesToSend =
             {
               AcknowledgeType = AcknowledgeTypes.FullReachQueue |
                                 AcknowledgeTypes.FullReceive,
               AdministrationQueue = new MessageQueue(AckQueueName)
             }
           };

可以用ProductTemplate吗？其他方式？

A primary key is an attribute or set of attributes that uniquely identifies a row in a table. But a primary key has not only to be unique, but also minimal. Why is that necessary?

I have a one entity framework object and when I add it to my project, the connectionstring is added to app.config in the connectionstring section, but when I want to create new entitycontext and use this connectionstring, this error appears

i'm developing a system with asp.net, there i generate a powerpoint presentaion in the server machine, i need to generate it there and save it in the clients machine, how can i achieve this? how to access the clients machine and save the generated file there?

ragards, Rangana

This histogram is really ugly:

hist(rbinom(10000, 20000, 0.0001),freq=F,right=F)

I don't want spaces between my bars. I tried different breaks= methods but they all produce similar results. Any ideas?

I also want each bin value (or mean values )to be printed under the center of it's bar.