Recent questions tagged C#

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Despite me working with C# (Windows Forms) for years, I'm having a brain fail moment, and can't for the ... stupidly simple that I'm missing. See Question&Answers more detail:os...

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

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285 views

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c# - Is a GUID a good key for (temporary) encryption?

I'm generating an encryption key to encrypt some sensitive data with the Rijndael (AES) encryption algoritm. I' ... sensitive for 20 minutes. See Question&Answers more detail:os...

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

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542 views

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c# - Fastest way to sort an array in descending order

Why is the following code Array.Sort(values); Array.Reverse(values); much faster at sorting an array in ... preferably in a one liner? See Question&Answers more detail:os...

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

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197 views

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c# - Why value types can't be null

I know that it is possible to have Nullable value types that wraps the value type and gives ability to store ... the reason is only conceptual? See Question&Answers more detail:os...

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

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738 views

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c# - WPF StoryBoard.Completed event not firing

I have an animation before closing the main window, like the following code shows. Problem is the StoryBoard.Completed is ... { this.Close(); }; See Question&Answers more detail:os...

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

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319 views

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c# - Attaching an entity of type 'X' failed because another entity of the same type

I've stumbled upon a strange bug in my code. Which was working before, but now works sometimes. I am using ... has the same primary key 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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239 views

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c# - Auto Height in combination with MaxHeight

I am facing a problem with setting the following xaml layout: RowHeightAuto.xaml <Window xmlns="http://schemas.microsoft.com ... { get; set; } } See Question&Answers more detail:os...

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

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260 views

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c# - How to change behaviour of stubs?

Can I change the behaviour of a stub during runtime? Something like: public interface IFoo { string GetBar(); } [ ... but I can't find it. 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# - Building with Code Contracts?

I have the following method: private void DoSomething(CoolClass coolClass) { if (coolClass == null) { throw ... attribute, or something easy? 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# - Filter a String

I want to make sure a string has only characters in this range [a-z] && [A-Z] && [0-9] && [-] so ... lot of strings to do... Thoughts? 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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325 views

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c# - how to get the next autoincrement value in sql

I am creating a winform application in c#.and using sql database. I have one table, employee_master, which ... the next autoincrement 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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719 views

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c# - Binding a generic List<string> to a ComboBox

I have a ComboBox and I want to bind a generic List to it. Can anyone see why the code below won't work? ... an instance of a class? 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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315 views

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c# - Getting a Method's Return Value in the VS Debugger

Is it possible to get a method's return value in the Visual Studio debugger, even if that value isn't assigned ... even a valid option or not. See Question&Answers more detail:os...

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

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522 views

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c# - How to insert null value in Database through parameterized query

I have a datetime datatype : dttm Also the database field type is datatime Now I am doing this: if (dttm.HasValue) ... } How can this be done. See Question&Answers more detail:os...

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

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448 views

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c# - How can I programmatically scroll a WPF listview?

Is it possible to programmatically scroll a WPF listview? I know winforms doesn't do it, right? I am talking ... an entire item height at once. See Question&Answers more detail:os...

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

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478 views

1 answer

c# - What is the use of Deployment.Current.Dispatcher.BeginInvoke( ()=> {...} )?

I have seen this Deployment.Current.Dispatcher.BeginInvoke( ()=> {...} ) format in some code .Is it used to ... are the general uses of it? See Question&Answers more detail:os...

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

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357 views

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c# - Java Equivalent of Reflection.Emit

As far as I can tell, Java has no such equivalent of C#'s Reflection.Emit stuff. Are there any additional ... differences (to reflection emit)? 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

1 answer

c# - How to Change ASP.NET MVC Controller Name in URL?

If we have "example_name" we can change it in url using [ActionName("")] So, i want to do this for ... this in URL: "/example-conroller" See Question&Answers more detail:os...

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

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222 views

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c# - How to have code in the constructor that will NOT be executed at design time by Visual Studio?

I have a method call in the constructor of my user control that does something that won't work at design time ... that code at design time? See Question&Answers more detail:os...

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

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524 views

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c# - AutoMapper throwing StackOverflowException when calling ProjectTo<T>() on IQueryable

I have created classes using EF Code First that have collections of each other. Entities: public class Field { ... . Are my mappings 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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300 views

1 answer

c# - How to resolve MVC4 Twitter Bootstrap project fail from simple Nuget installations in VS2012?

I'm having an issue with launching a MVC4 application with the Twitter bootstrap. In VS 2012, I created a ... 26, 2013. Assistance 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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227 views

1 answer

c# - Handling two WebException's properly

I am trying to handle two different WebException's properly. Basically they are handled after calling WebClient. ... to do this? 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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280 views

1 answer

c# - Getting proxies of the correct type in NHibernate

I have a problem with uninitialized proxies in nhibernate The Domain Model Let's say I have two parallel class ... of them. Thanks, Nir See Question&Answers more detail:os...

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

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214 views

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c# - Is this slow WPF TextBlock performance expected?

I am doing some benchmarking to determine if I can use WPF for a new product. However, early performance results ... for in the real product. See Question&Answers more detail:os...

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

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367 views

1 answer

c# - Using log4net to write to different loggers

I am using log4net to do my logging. I would like it to write to a file and to the eventlog at the same time. ... as well. Where did I go 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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289 views

1 answer

c# - Azure Functions - Shared classes

I want to use some shared classes on my Azure Functions to not duplicate code. I have tried to create a empty C# ... : #r "../Shared/Class.cs" See Question&Answers more detail:os...

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

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267 views

1 answer

c# - SerializationException when serializing instance of a class which implements INotifyPropertyChanged

i am trying to serialize a field of my class. Withou it serialization is fine, with it a get SerializationException. Field ... (this, e); } } } See Question&Answers more detail:os...

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

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577 views

1 answer

c# - How can I show a message box with details in WinForms?

Just now I noticed that Visual Studio shows a message box with details when a property is set to an ... box that shows additional 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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