Recent questions tagged C#

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c# - System.DirectoryServices is not recognised in the namespace 'System'

I'm trying to use System.DirectoryServices in a web site project and I'm getting this error: The type or ... where to look for the problem? See Question&Answers more detail:os...

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

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632 views

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c# - Verifying event registration using Moq

I'm developing an asp.net (classic) application trying to implement the MVP pattern using this example. In trying to ... we do this using MOQ? See Question&Answers more detail:os...

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

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248 views

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c# - LINQ Where in collection clause

I've been looking on google but not finding anything that does the trick for me. as you know SQL has a "where ... but it doesn't even build. 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# - Change default icon

I'm trying to change the application icon from default to something else. So what I did, is I made an icon and ... . What i'm doing wrong 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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387 views

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c# - The remote server returned an error: (403) Forbidden

I've written an app that has worked fine for months, in the last few days I've been getting the error below on ... ReadToEnd(); } //More 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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234 views

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c# - Removing whitespace between consecutive numbers

I have a string, from which I want to remove the whitespaces between the numbers: string test = "Some Words 1 ... 000" Output: "Another 12000" See Question&Answers more detail:os...

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

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341 views

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c# - Argument type is not CLS-compliant, why?

I get the warning like this If you know what it is, please explain & help me to get rid of it. Nam. See Question&Answers more detail:os...

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

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504 views

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c# - MVC .Net Core Model Validation - The value '' is invalid. Error

I am trying to use Model Validation in MVC .Net Core and can't manage to replace this default error ... that error message replaced? 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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430 views

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c# - Why Automatically implemented properties must define both get and set accessors

When we define a property like public string Name {get; set;} dot net can make our properties code. but ... automatically? What's the problem? 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 is "ss" equal to the German sharp-s character 'ß'?

Coming from this question I'm wondering why ? and ae are different(which makes sense) but ? and ... StringComparison.InvariantCulture); // true See Question&Answers more detail:os...

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

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171 views

1 answer

c# - Bad implementation of Enumerable.Single?

I came across this implementation in Enumerable.cs by reflector. public static TSource Single<TSource>(this ... with this conclusion. See Question&Answers more detail:os...

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

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507 views

1 answer

c# - Why does a collection initializer expression require IEnumerable to be implemented?

Why does this generate a compiler error: class X { public void Add(string str) { Console.WriteLine(str); } } ... method and which isn't used? See Question&Answers more detail:os...

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

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242 views

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c# - Retrieving data from a POST method in ASP.NET

I am using ASP.NET. There is a system that needs to POST data to my site and all they asked for is for me ... does not seem like they are even? See Question&Answers more detail:os...

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

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992 views

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c# - Change the IDENTITY property of a column, the column needs to be dropped and recreated

I am using EF Core 2.1 This was my initial model definition. public class Customer //Parent { public int Id ... well. But still the same error. See Question&Answers more detail:os...

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

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220 views

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c# - Rounding of float values

I have the double value like 12.256852651 and I want to display it as 12.257 as a float number without converting it in ... can I do it 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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210 views

1 answer

c# - What does ----s mean in the context of StringBuilder.ToString()?

The Reference Source page for stringbuilder.cs has this comment in the ToString method: if (chunk.m_ChunkLength > 0 ... string to be formatted? See Question&Answers more detail:os...

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

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273 views

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c# - Will the compiler only compile code that can get executed?

I have a class library and am using only part of it. Is there a need to delete what isn't being used ... (which themselves are never called). See Question&Answers more detail:os...

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

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172 views

1 answer

c# - Blocking and waiting for an event

It sometimes want to block my thread while waiting for a event to occur. I usually do it something like this: ... called on the gui-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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415 views

1 answer

c# - Entity Framework 4 getting primary key ID for inserted record

I am using the Entity Framework for inserting a row into my sql database. If I was to be using a ... inserted using the Entity 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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355 views

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c# - Is using Action.Invoke considered best practice?

If I have the below code, should I just call the Action or should it call Action.Invoke? public class ClassA { public ... ) { //do something } } See Question&Answers more detail:os...

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

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200 views

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c# - Cast with GetType()

Is it possible to cast an object to the type returned from GetType()? I'd like a generic method that ... then share and pass between methods. See Question&Answers more detail:os...

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

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580 views

1 answer

c# - How to pass complex object to ASP.NET WebApi GET from jQuery ajax call?

I have the following complex object in JavaScript which contains filter options var filter={caseIdentifiter:'GFT1', ... parameters are added. See Question&Answers more detail:os...

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

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996 views

1 answer

c# - provided URI scheme'http' is invalid; expected 'https'

I have a RESTful Web Service hosted in IIS 6.0, I am able to Browse the Service in browser. When i am ... TestMethod, it gives me this error. See Question&Answers more detail:os...

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

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653 views

1 answer

c# - Mock HttpRequest in ASP.NET Core Controller

I'm building a Web API in ASP.NET Core, and I want to unit test the controllers. I inject an interface for ... but I really want to avoid that. See Question&Answers more detail:os...

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

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530 views

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c# - The I/O operation has been aborted because of either a thread exit or an application request

My application is working as a client application for a bank server. The application is sending a request ... code Regards, Ashish Khandelwal See Question&Answers more detail:os...

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

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561 views

1 answer

c# - Why no AutoResetEventSlim in BCL?

Why isn't there an AutoResetEventSlim class in BCL? Can it be simulated using ManualResetEventSlim? See Question&Answers more detail:os...

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

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215 views

1 answer

c# - Including a file when I publish my Azure function in Visual Studio

I know this seems like a simple thing but I can't find any help online. I want to include a file (.html) ... emails, which is what I want. See Question&Answers more detail:os...

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

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187 views

1 answer

c# - Differences between Private Fields and Private Properties

What is the difference between using Private Properties instead of Private Fields private String MyValue { get; set; ... a naming convention ? See Question&Answers more detail:os...

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

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