Recent questions tagged C#

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c# - Could not load file or assembly 'WebGrease' or one of its dependencies

When I run my MVC4 Web application it gives the following error: Could not load file or assembly 'WebGrease' or ... > Line 253: </membership> See Question&Answers more detail:os...

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

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244 views

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c# - How to isolate EF InMemory database per XUnit test

I am trying use InMemory EF7 database for my xunit repository test. But my problem is that when i try to Dispose ... : "2.2.0-beta2-build3300" See Question&Answers more detail:os...

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

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326 views

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c# - mvc 5 SelectList from table with blank value for DropDownList

I am using below code to create a drop down Controller ViewBag.Id= new SelectList(db.TableName.OrderBy(x => ... added for DropDownList. 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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166 views

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c# - Why can't I debug code in an async method?

I actually started the night trying to learn more about MongoDB, but am getting hung up and the .NET await/async ... to me what is going on? See Question&Answers more detail:os...

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

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224 views

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c# - How to resolve Value cannot be null. Parameter name: source in linq?

I don't know why I get this kind of error. It happens sometimes, and I suspicious of my code that still have ... (k); } return listMetadata; } See Question&Answers more detail:os...

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

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310 views

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c# - Ignoring class members that throw exceptions when serializing to JSON

I'm using the Newtonsoft JSON serializer and it works for most objects. Unfortunately I get a JsonSerializationException ... that will do 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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140 views

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c# - Windows Service to Azure?

I've written a Windows Service in C# that does a whole bunch of background admin tasks on the database. ... something Azure-compatible. 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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348 views

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c# - Safely Removing DataRow In ForEach

I don't understand why this code does not work. foreach (DataRow dataRow in dataTable.Rows) { if (true) { dataRow.Delete(); } } See Question&Answers more detail:os...

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

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165 views

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c# - How to throw exception in Web API?

How can I throw a exception to in ASP.net Web Api? Below is my code: public Test GetTestId(string id) { Test ... know it is a HTTP 404 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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259 views

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c# - Asp.net mvc - Accessing view Model from a custom Action filter

I am trying to access the Model data passed to the view in the action filter OnActionExecuted. Does anyone know if ... .Name); } Any advice? See Question&Answers more detail:os...

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

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163 views

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c# - How to determine if a object type is a built in system type

I am writing a simple List<t> to CSV converter. My converter checks the all the t's in List and grabs all public ... we don't know its a string) 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# - Add Row Dynamically in TableLayoutPanel

I want to add these entries dynamically row by row in TableLayoutPanel in Windows Form in c# How can I do 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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293 views

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c# - How can I use a percent % in FormatString without it multiplying by 100?

I would like to format an integer as a percent without it multiplying by 100 as shown here. Because my source is ... = "{0:#%}")] See Question&Answers more detail:os...

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

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281 views

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c# - Best Data annotation for a Decimal(18,2)

I have a column inside my sql server 2008 wih type of Decimal(18,2). But on entity framework what is the ... my asp.net MVC web application ? See Question&Answers more detail:os...

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

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144 views

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c# - What is the OR operator in an IF statement

In C#, how do I specify OR: if(this OR that) {do the other thing} I couldn't find it in ... MinistryFOL MinistryDownloader.cs 63 21 FOL Ministry See Question&Answers more detail:os...

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

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169 views

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c# - Refactoring Singleton Overuse

Today I had an epiphany, and it was that I was doing everything wrong. Some history: I inherited a C# ... pattern overuse 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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269 views

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A method returns a sequence, IEnumerable<T>, and you now want to check if it is empty. How do you recommend ... inside that method as well :p See Question&Answers more detail:os...

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

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309 views

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c# - How do I strip non-alphanumeric characters (including spaces) from a string?

How do I strip non alphanumeric characters from a string and loose spaces in C# with Replace? I want to keep a-z ... ""); but the spaces remain. See Question&Answers more detail:os...

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

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199 views

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c# - What is the ASP.NET Core MVC equivalent to Request.RequestURI?

I found a blog post that shows how to "shim" familiar things like HttpResponseMessage back into ASP.NET Core MVC, ... the base url of the site. See Question&Answers more detail:os...

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

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182 views

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c# - Using Exception.Data

How have you used the Exception.Data property in C# projects that you've worked on? I'd like answers that ... are very specific to your app. See Question&Answers more detail:os...

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

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394 views

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c# - Why is "lock (typeof (MyType))" a problem?

MSDN gives the following warning about the lock keyword in C#: In general, avoid locking on a public type, or ... dangerous about it? Thank you. See Question&Answers more detail:os...

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

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864 views

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c# - The CLR has been unable to transition from COM context [...] for 60 seconds

I am getting this error on code that used to work. I have not changed the code. Here is the full error: ... won't open - any ideas? See Question&Answers more detail:os...

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

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514 views

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c# - Is a linq query to ConcurrentDictionary Values threadsafe?

let's say I have the following code: ConcurrentDictionary<long, long> myDict= new ConcurrentDictionary<long, long>(); ... )) { return false } See Question&Answers more detail:os...

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

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145 views

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c# - Detect if action is a POST or GET method

In MVC 3, is it possible to determine if an action is a result of a POST or GET method? I know you can ... I want to clear out TempData first. See Question&Answers more detail:os...

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

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176 views

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c# - virtual properties

I have used and learned only virtual methods of the base class without any knowledge of virtual properties used as ... me what that means ? See Question&Answers more detail:os...

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

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288 views

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c# - What if a timer can not finish all its works before the new cycle time arrives?

Suppose we have a timer which runs every 10 minutes. What if the cycle of its processing takes more than ... logic behind its working mechanism. See Question&Answers more detail:os...

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

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306 views

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c# - Use new keyword if hiding was intended

I have the following snippet of code that's generating the "Use new keyword if hiding was intended" warning ... function in this scenario? See Question&Answers more detail:os...

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

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343 views

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c# - Why does Try-Catch require curly braces

Just curious: Why is the syntax for try catch in C# (Java also?) hard coded for multiple statements? Why doesn' ... I know there's int.TryParse. See Question&Answers more detail:os...

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

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