If I have a variable of type IQueryable<T> I have four extension methods for Where in namespace Systm.Linq available: public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, bool>> predicate); public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, int, bool>> predicate
如果我有一个IQueryable<T>类型的变量IQueryable<T>我可以使用命名空间Systm.Linq Where四个扩展方法: public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, bool>> predicate); public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, int, bool>> predicate); public stati
I have read a number of posts regarding the implementation of a generic repository. I have also read a number of posts that explain the difference between exposing IEnumerable vs. IQueryable from my repository. I would like the flexibility of having my data filtered in the database (rather than in memory by the client) but want to avoid having to define a separate repository interface for all
我已经阅读了一些关于实施通用知识库的文章。 我还阅读了一些解释从我的存储库中暴露IEnumerable与IQueryable之间的区别的帖子。 我希望能够灵活地在数据库中过滤数据(而不是客户端的内存),但希望避免为我的所有实体(以及实现这些接口的具体类)定义单独的存储库接口。 到目前为止,我的仓库看起来像这样 public interface IRepository<T> { IEnumerable<T> GetAll(); IEnumerable<T> Find(E
C:Program Files (x86)MSBuild14.0binMicrosoft.Common.CurrentVersion.targets(5,5): Warning MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.5" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that as
C: Program Files文件(x86) MSBuild 14.0 bin Microsoft.Common.CurrentVersion.targets(5,5):警告MSB3644:找不到框架“.NETFramework,Version = v4.5”的引用程序集。 要解决此问题,请为此框架版本安装SDK或Targeting Pack,或将您的应用程序重定向到您安装了SDK或Targeting Pack的框架版本。 请注意,程序集将从全局程序集缓存(GAC)中解析出来,并将用于代替引用程序集。 因此,您的程序集可能无法正确定位您想
I am using Xamarin studio community v6.1.4 but when I write & run any program, every time I face a warning. C:Program FilesMSBuild14.0binMicrosoft.Common.CurrentVersion.targets(5,5): Warning MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.5" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your app
我使用的是Xamarin studio community v6.1.4,但是当我编写和运行任何程序时,每当我遇到警告时。 C: Program Files MSBuild 14.0 bin Microsoft.Common.CurrentVersion.targets(5,5):警告MSB3644:找不到框架“.NETFramework,Version = v4.5”的引用程序集。 要解决此问题,请为此框架版本安装SDK或Targeting Pack,或将您的应用程序重定向到您安装了SDK或Targeting Pack的框架版本。 请注意,程序集将从全局程序集
I am creating a windows user control based on a DateTimePicker. The control is set to show just the time so it displays thus: I have a public property TimeIsValid: public bool TimeIsValid { get { return _timeIsValid; } set { _timeIsValid = value; Refresh(); } } and when this is set to false I want the text to turn red. So I have overridden the OnPaint with the follow
我正在创建一个基于DateTimePicker的Windows用户控件。 该控件设置为仅显示时间,因此显示如下: 我有一个公共属性TimeIsValid: public bool TimeIsValid { get { return _timeIsValid; } set { _timeIsValid = value; Refresh(); } } 当这个设置为false时,我希望文本变成红色。 所以我用下面的代码覆盖了OnPaint: protected override void OnPaint(PaintEventArgs e) { base
The General Problem The application is C# WinForms .Net 4.0. I have a SplitContainer that takes up most of the form, it is set to Anchor in all directions so it re-sizes along with the form. The left panel (Panel1) has a simple menu, no problems here. The right panel (Panel2) is more complex and contains a number of nested tab controls (with lots of controls) - it is painfully complex, but
一般问题 该应用程序是C#WinForms .Net 4.0。 我有一个SplitContainer占用了大部分表单,它被设置为全方位锚定,因此它随着表单一起重新调整大小。 左面板(Panel1)有一个简单的菜单,这里没有问题。 右侧面板(Panel2)更加复杂,并且包含许多嵌套的选项卡控件(包含许多控件) - 它非常复杂,但不会改变。 问题在于重新调整表格的效果并不理想。 事实上,如果通过缓慢拖动边缘来调整大小,那么它可以正常工作,但可
I'm currently implementing a double TrackBar with two sliders. Things are going well, but I'm not sure how to go about implementing the sizing properties a TrackBar has. In the Winforms editor in Visual Studio, a TrackBar with AutoSize set to true automatically sizes vertically and only gives you handles to size it horizontally (with the default Orientation value): However, I'm n
我目前正在实施带有两个滑块的双TrackBar 。 事情进展顺利,但我不知道如何去实现TrackBar具有的大小属性。 在Visual Studio中的Winforms编辑器中, AutoSize设置为true的TrackBar自动调整垂直大小,并且只允许您使用手柄来水平调整大小(使用默认Orientation值): 但是,我不确定如何使用我的自定义控件获取这些尺寸属性: 自己调整大小现在可以正常工作,但我想仿效TrackBar的行为。 我会怎么做呢?
I have a UserControl that contains invisible controls, to make them visible, the UserControl resizes. I need to resize the Panel that contains the UserControl, but I don't know how. This behavior is handled well by the Panel and Form classes without explicit sizing (and without the layout bugs introduced when the user has a high-DPI monitor or uses the large or extra-large font settings.
我有一个UserControl包含不可见的控件,为了使它们可见,UserControl调整大小。 我需要调整包含UserControl的Panel,但我不知道如何。 这种行为很好地通过面板和表单类来处理,没有明确的尺寸(并且没有在用户使用高DPI监视器或使用大或超大字体设置时引入布局错误。 1)创建一个带有停靠的FlowLayoutPanel的窗体。 2)将Form和FlowLayoutPanel的AutoSize设置为true,并将AutoSizeMode设置为GrowAndShrink 3)添加你的
For colour coding reasons, I need a system whereby I often paste a string to a rich text box (instead of the default standard typing). Unfortunately, it often causes a flash, especially if you keep a key held down. The RTB doesn't seem to support double buffering, but I'm not sure if that would help anyway. Over-riding the on-paint event also appears ineffective. After researching th
出于颜色编码的原因,我需要一个系统,我经常将一个字符串粘贴到一个富文本框(而不是默认的标准输入)。 不幸的是,它经常会导致闪光,特别是如果你保持按住键。 RTB似乎不支持双缓冲,但我不确定这是否会有所帮助。 重画涂装事件也显得效果不佳。 在研究网络之后,迄今为止我发现的最好的'解决方案'是使用本机Windows互操作(LockWindowUpdate等)。 这样可以解决在滚动点之外打字的情况非常糟糕的情况。 不幸
I have a control with a inner TextBox. I want to make a direct relationship between the Text property of the UserControl and the Text property of the TextBox. The first thing I realized is that Text was not being displayed in the Properties of the UserControl. Then I added the Browsable(true) attribute. [Browsable(true)] public override string Text { get { return m_textBox.Tex
我有一个内部TextBox的控件。 我想在UserControl的Text属性和TextBox的Text属性之间建立直接关系。 我意识到的第一件事是文本没有显示在UserControl的属性中。 然后我添加了Browsable(true)属性。 [Browsable(true)] public override string Text { get { return m_textBox.Text; } set { m_textBox.Text = value; } } 现在,文本将显示一段时间,但随后被删除。 这是因为信息