小编Tan*_*Tan的帖子

每当我在应用程序上单击任何内容时，我都希望始终Focus在其TextBoxWPF应用程序上保留特定内容TextBox。

嗨,无论如何要写这样的东西

            var r = from i in myList
                group i by i.Number
                    into grp
                    select new
                    {
                        Reported = grp.Select(x => x.CurrentStatus).First(),
                        Number = grp.Key,
                        Sum = grp.Sum(x => x.Details[0].Quantity),
                        Name = grp.Select(x => x.Name).First(),
                        Details = grp.Select(x => x.Details).First(),
                        Descriptions = grp.Select(x => x.Descriptions).First(),
                        AssignmentId = grp.Select(x => x.AssignmentId).First(),
                        Listor = grp.Select(x => x.Number).Count()
                    };

进入这个

            var r = from i in myList
                group i by i.Number, i.CurrentStatus
                    into grp
                    select new
                    {
                        Reported = grp.Select(x => x.CurrentStatus).First(),
                        Number …

是否可以将当前项目绑定到这样的列表视图项目源中的按钮中的标签。我该怎么做 请帮忙

<ListView ItemsSource="Assignments">
      <ListView.ItemTemplate>
          <DataTemplate>
              <Button Tag="{Binding CurrentItem}">

              </Button>
          </DataTemplate>
      </ListView.ItemTemplate>
</ListView>

我正在尝试学习DDD的概念.我做了一个项目,我使用数据库第一种方法.在基础设施中,我添加了一个edmx文件,我选择自动生成entites.现在在"域"中我正在尝试创建聚合.

但在这里我遇到了一些问题.我正在尝试创建一个名为"User"的聚合,但是用户已经存在于自动生成的ef中.我是否应该将聚合"用户"重命名为其他内容,并且当从db地图获取数据时,它将从db引入聚合.

我做错了？或者我不应该自动生成实体或者是enties聚合？

Plz建议和帮助.

嗨iam试图让Wpf TextBlock闪烁.我希望当我点击一个按钮时,文本块会闪烁.我怎么能做到这一点.

我尝试了以下内容.

<TextBlock Name="txtBlockScannerText" Margin="10,0,0,0" Style="{StaticResource TextBlockNormal}" Text="Skanna Inleverans listan">
    <TextBlock.Triggers>
        <EventTrigger RoutedEvent="TextBlock.MouseEnter">
            <EventTrigger.Actions>
                <BeginStoryboard>
                    <Storyboard BeginTime="00:00:00" RepeatBehavior="Forever" Storyboard.TargetName="txtBlockScannerText" Storyboard.TargetProperty="(Foreground).(SolidColorBrush.Color)">
                        <ColorAnimation From="Black" To="Red" Duration="0:0:1"/>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger.Actions>
        </EventTrigger>
    </TextBlock.Triggers>
</TextBlock>

但是这个代码只有在鼠标输入时才会闪烁.如何在按钮单击事件中触发闪烁.或者我如何调用事件闪烁.感谢帮助

有没有办法在实体框架 LINQ 查询中使用/发出 SQL Server READPAST 表提示？

尝试全局安装express并收到此错误.我在x86 qnap上运行node.js版本0.10.24.

[/share/Qweb/Codiad/workspace/chat] # npm install express -g
npm ERR! Error: setuid user id does not exist
npm ERR! at /share/MD0_DATA/.qpkg/Optware/lib/node_modules/npm/node_modules/uid-number/uid-number.js:44:16
npm ERR! at ChildProcess.exithandler (child_process.js:635:7)
npm ERR! at ChildProcess.EventEmitter.emit (events.js:98:17)
npm ERR! at maybeClose (child_process.js:735:16)
npm ERR! at Socket. (child_process.js:948:11)
npm ERR! at Socket.EventEmitter.emit (events.js:95:17)
npm ERR! at Pipe.close (net.js:466:12)
npm ERR! If you need help, you may report this entire log,
npm ERR! including the npm and node versions, at:
npm ERR! http://github.com/isaacs/npm/issues

npm ERR! System Linux 3.4.6 …

嗨iam试图在我的数据库中创建更新触发器.但每次触发器触发时我都会收到此错误.

错误消息:更新或删除的行值不会使行唯一,也不会改变多行(3行)

并且继承了我的触发器

ALTER TRIGGER [dbo].[x1pk_qp_update]
        ON [dbo].[x1pk] FOR UPDATE
AS
BEGIN TRY
DECLARE @UserId int
      , @PackareKod int
      , @PersSign varchar(10)

    SELECT @PackareKod = q_packarekod
         , @PersSign = q_perssign
      FROM INSERTED

IF @PersSign IS NOT NULL
BEGIN
    IF EXISTS (SELECT * FROM [QPMardskog].[dbo].[UserAccount] WHERE [Account] = @PackareKod)
    BEGIN
    SET @UserId = (SELECT [UserId]
                     FROM [QPMardskog].[dbo].[UserAccount]
                    WHERE [Account] = @PackareKod)

        UPDATE [QPMardskog].[dbo].[UserAccount]
           SET [Active] = 1
         WHERE [Account] = @PackareKod

        UPDATE [QPMardskog].[dbo].[User]
           SET [Active] = 1
         WHERE [Id] = @UserId …

我有一个填充按钮的列表框.单击按钮后,将显示一个新页面.但是,当我点击按钮时,我想拥有列表框的选定索引.但是从不选择listboxitem.有没有办法通过单击按钮获取按钮所在的索引.感谢帮助.

示例代码

 <ListBox>
   <ListBox.ItemTemplate>
        <DataTemplate>
              <Button Click="ViewDetail_Click" Content="{Binding Path=Area}"></Button>
         </DataTemplate>
    </ListBox.ItemTemplate>
  </ListBox>