Recent questions tagged C#

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I am using C# to develop a UWP app for Windows 10 running only on desktop computers, targeting platform version ... it from running)? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Casting to Generic base class failing

I am failing to see why my attempt to cast to a generic base class is not working. The basic ... this a covariancecontravariance issue? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Is there a difference between x is null and ReferenceEquals(x, null)?

When I write this: ReferenceEquals(x, null) Visual studio suggests that the null check can be simplified. and ... Are those really the same? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to use Dependency Injection with Entity Framework DbContext?

I am currently working on including a new functionality for a Website. I have a DbContext class which I created ... right way? Any thoughts? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Cause of high UDP package loss on localhost?

In my WPF 4.0 application, I have a UDP listener implemented as shown below. On my Windows 7 PC, I'm ... instance executed on the main thread? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Check visible rows in a WPF DataGrid

I have a WPF DataGrid, which when there are too many rows to view on the screen it gets a vertical ... in order to update some information. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - internal abstract methods. Why would anyone have them?

I was doing some code review today and came across an old code written by some developer. It goes something ... a method as internal abstract ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Deserialize json with auto-trimming strings

I use Newtonsoft.Json library Is there a way to trim spaces from any string data during deserialization? class Program { ... , p.Surname); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Whats the difference between Parentform and Owner

In winforms we have objForm.Owner and objForm.Parent. Whats the difference between these two. I opened a form B ... as ParentForm was null !! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - .NET Core error on build: error MSB4062 Microsoft.Build.Tasks.ResolveComReference

I'm working on a .net core web app (targeting net461). The app needs to reference a COM dll. I added ... in Visual Studio) to the Interop dll See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Combining List initializer and object initializer

Is is possible to combine a List initializer and object initializer at the same time? Given the following class ... feature of the c# compiler? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to scroll a panel manually?

I want to use the same functionality available when a Panel.AutoScroll is true, but with the scrollbars invisible. ... functions in my code. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Using Singular Table Names with EF Core 2

I want my domain class name to match my db table name (no pluralisation). In EF Core 1.1, I used this ... to remove pluralisation in EF Core 2? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - HtmlAgilityPack Documentation

I am new to C#(started today) and I am trying to understand someone else's code which used the HtmlDocument class ... ).ns() Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Get tag of selected item in WPF ComboBox

I have combobox like this: <ComboBox Name="ExpireAfterTimeComboBox" Margin="5" SelectedIndex="0"> <ComboBoxItem Content=" ... .Tag doesn't work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Have an "'Resource.Attribute' does not contain a definition for 'actionBarSize'" error

Was trying to debug an empty app and got "'Resource.Attribute' does not contain a definition for 'actionBarSize'" ... private Attribute() { } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Get a list of all NuGet packages used in a solution

I'm looking for a way to get a list of all used NuGet packages in every project in a solution ( ... PackageReference. Any idea would be helpful See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Out Of Context Variables In Visual Studio 2010 Debugger

I am having a very odd problem with local variables being out of context in the Visual Studio 2010 ... ConfigureDefaultAnnouncerSockets(); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Why does Razor not like this?

Ive got a mega annoying problem I have a view with: @{ if(ViewBag.Section == "Home") { <div id=" ... ? Its for a hack bascially... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Calculating the required buffer size for the WriteableBitmap.WritePixels method

How do I calculate the required buffer size for the WriteableBitmap.WritePixels method? I am using the overload taking ... in the above code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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655 views

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c# - NamedPipeClientStream can not access to NamedPipeServerStream under session 0

I have NamedPipeClientStream which connects to NamedPipeServerStream. They exchange a couple of messages, and then ... from LocalSystem service. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Why the Reset() method on Enumerator class must throw a NotSupportedException()?

From what I saw on http://csharpindepth.com/Articles/Chapter6/IteratorBlockImplementation.aspx, and article by Jon ... would be the reason? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to launch IE7 from a Windows Phone App?

How do you launch an instance of IE from an app? Is it better practice to page to a window with and browser window? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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651 views

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c# - Regex remove special characters

We need a C# function which will remove all special characters from a string. Also, is it possible to change ... single quote and character s)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Bearer error - invalid_token - The signature key was not found

I have an Angular 7 application interfacing with a .Net Core 2.2 API back-end. This is interfacing with ... here is populating as expected. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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641 views

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c# - Subtract HashSets (and return a copy)?

I've got a HashSet, var universe = new HashSet<int>(); And a bunch of subsets, var sets = new List<HashSet< ... first, or is there a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to create a DateTime object?

I have three integers: Hours, Minutes, and Seconds. I want to create a DateTime object with System.Date and ... by the above three variables. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to use Ninject Conventions extension without referencing Assembly (or Types within it)

Sorry in advance for the long question, it's long because I've been digging at this all day. The general problem: ... able to solve it .. yet. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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