Recent questions tagged C#

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c# - How .NET Dictionary implementation works with mutable objects

I understand that it is not advisable to use "mutable" objects (objects whose GetHashCode() method can return ... am missing something here... 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# - Operation is not valid due to the current state of the object (System.Text.Json)

We've got an API, which simply posts incoming JSON documents to a message bus, having assigned a GUID to ... read-only or something similar. 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 do I get a JsonReaderException with this code?

I've got this code to try to open a .json file and read it: [Route("{unit}/{begindate}")] public string Get( ... do it. What am I doing wrong? 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# - ImageList: 32-bit Images lose quality

I'm using ImageList for TreeView and ListView. I've first set the image quality to 32 bit and then added ... the right side of the screenshot. 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# - What does CreateMany with seed do?

What does the CreateMany overload with the T seed parameter actually do? I've tried to seed, but the seed ... in all newly created objects See Question&Answers more detail:os...

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

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678 views

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c# - Dns.GetHostEntry returns multiple IP addresses

This question probably highlights a lack of understanding of networking principals on my part, rather than a ... do I not understand? 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# - Unloading a dll file in mef

I have some plugins as dll files. My application loads the dll and it runs fine. but when I try ... assembles here container.ComposeParts(this); 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# - The calling thread cannot access this object because a different thread owns it

So I am making a simple brick breaking game in c#/wpf. I am running into an issue using timers, I feel like it is ... = true; b.Initiate(); } } 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# - Could not load file or assembly 'Microsoft.VisualStudio.VC.Interfaces

I updated my community edition of visual studio 2017 to 15.3.0 and I got this new build error Build Failure. ... runs under 4.5.1 framework. 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 do I enable special characters in MVC routing?

I'm using asp.net MVC 4. These are my routes: routes.MapRoute( name: "Default", url: "{controller}/{action}/{id ... ", action = "Details" } ); 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 it possible to hook into Hardware keyboard events at an Application level?

I am developing a Xamarin.Forms application for iOS, Android and UWP. I would like to hook into hardware ... an equivilent for Xamarin iOS? 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# - autocompletebox focus in wpf

when I try to focus on my "autocompletetextbox" I failed I write autocompletetextbox.focus() but the cursor still ... write in it or focus? See Question&Answers more detail:os...

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

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414 views

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c# - Why is my Catch block only running while Debugging in Visual Studio?

Code in Program.cs [STAThread] static void Main() { Application.EnableVisualStyles(); Application. ... , Windows XP. See Question&Answers more detail:os...

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

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548 views

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c# - Getting past entity framework BeginTransaction

I am trying to make sense of mocking in unit testing and to integrate the unit testing process to my project. ... Any ideas how to solve this? See Question&Answers more detail:os...

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

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480 views

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c# - WPF Custom shape

I need to create a custom shape to add on a WPF form. The shape is just a triangle. If you are ... anything very likely is not. 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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803 views

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c# - Get UNC path from a local path or mapped path

In Delphi there is a function ExpandUNCFileName that takes in a filename and converts it into the UNC equivalent. ... that wouldn't get mapped? See Question&Answers more detail:os...

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

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395 views

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c# - Conditional Statements difference

Is there any difference between below two statements if (null != obj) and if (obj != null) If both treated same which will be preferable? See Question&Answers more detail:os...

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

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374 views

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c# - Does using parentheses around return values provide any compiler-related benefits?

Was just watching a video of a rather great Microsoft instructor, Mike Taulty. In his videos he consistently surrounded ... emails = value; } } See Question&Answers more detail:os...

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

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403 views

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c# - Why Empty Text File Contains 3 bytes?

I'm using a text file inside my C# project in vs2010. I added to solution and set its "Copy Output" to ... helps, codes wil be very appreciated. See Question&Answers more detail:os...

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

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566 views

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c# - IsTabStop="False" has no effect on my WPF app

I'm having a really hard time with something that should be trivial. I just want to remove a few buttons from ... to what might be going wrong? See Question&Answers more detail:os...

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

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582 views

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c# - Guaranteed semaphore order?

The documentation for the .NET Semaphore class states that: There is no guaranteed order, such as FIFO or ... pretty advanced? Thanks, Steve See Question&Answers more detail:os...

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

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487 views

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c# - How to truncate a file down to certain size but keep the end section?

I have a text file that's appended to over time and periodically I want to truncate it down to a certain ... suggestions on using Log4Net etc. See Question&Answers more detail:os...

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

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467 views

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c# - EntityFramework show entities before saving changes

Entity Framework ObjectSet with its method ToList shows just saved entities. That means, when I call context. ... ? 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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461 views

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c# - Find the float just below a value

Say I have a float X. I want to find the largest number that is less than X and can be losslessly stored in a ... there a way to do this in C#? See Question&Answers more detail:os...

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

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863 views

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c# - XmlSerializer: How to Deserialize an enum value that no longer exists

I am using the XMLSerializer to save this class to a file. The class has a string and an enum as ... the deserialization is complete). Mitch See Question&Answers more detail:os...

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

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806 views

1 answer

c# - WPF ListBox not updating with the ItemsSource

I have what I believe should be simple two-way databinding in WPF setup, but the listbox (target) is not ... doesn't appear. What gives? See Question&Answers more detail:os...

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

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523 views

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c# - How to move a file on Azure File Storage from one sub folder to another sub folder using the Azure Storage SDK?

I'm trying to figure out how to move a file in Azure File Storage from one location to another location, ... each sub-directory, first? cheers! See Question&Answers more detail:os...

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

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494 views

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c# - How to mock extension methods with Rhino Mock?

I have extended objects of type IDataReader with some extension methods that I needed. The problem is now when I ... how to get around this? See Question&Answers more detail:os...

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

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