Recent questions tagged C#

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I am trying to display icon file in a picture box. I'm using this code to set the image. pictureBox1. ... to overcome this problem? 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# - Function Overloading

Let us suppose i have these three methods defined: int F1(int, int); int F1(float, float); Float F1(int, ... Which method it will call and why? 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 next N elements from enumerable

Context: C# 3.0, .Net 3.5 Suppose I have a method that generates random numbers (forever): private static ... those in 4 groups by 10. 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 display context menu for treeview item in a hierarchial data template in wpf

How to display context menu for tree view item in wpf using the hierarchical data template? How to ... /StackPanel> </HierarchicalDataTemplate> 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 update related entities in Entity Framework

I have an MVC project and using Entity Framework Code First and POCO objects for the database. For example: public ... ("EditForm", model); } 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 gotchas exist with Tasks and Garbage Collection?

When does a developer need to be concerned with the effects of garbage collection when using APIs and ... missing or misunderstanding 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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c# - System.Timers.Timer only gives maximum 64 frames per second

I have an application that uses a System.Timers.Timer object to raise events that are processed by the main form ( ... I'm not). 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# - Do LINQ's Enumerable Methods Maintain Relative Order of Elements?

Say I have List<Foo> foos where the current order of elements is important. If I then apply a LINQ Enumerable ... order as the original list? 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 locking necessary for Dictionary lookup?

lock(dictionaryX) { dictionaryX.TryGetValue(key, out value); } is locking necessary while doing lookups to a ... dict is being locked. 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 in visual basic?

I'm a C# programmer who is forced to use VB (eh!!!!). I want to check multiple controls state in one ... how can I accomplish this in VB? 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# - Move a borderless window in wpf

In my C# WinForms app I have a main window that has its default controls hidden. So to allow me to move it around ... How do I do this in WPF? 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 marshal a pointer to an array of pointers to structures?

I have a C function with the following signature: int my_function(int n, struct player **players) players ... array of pointers to structures. 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# - convert IQueryable<int> to <int>

I want to select my price level in database to compare with the an integer number. But It is error : Operator ... .Write("Welcome"); } } 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# - Multiple controllers with same URL routes but different HTTP methods

I've got a following two controllers: [RoutePrefix("/some-resources") class CreationController : ApiController { [ ... assumed - common case. 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# - Best way to do TDD in express versions of visual studio(eg VB Express)

I have been looking in to doing some test driven development for one of the applications that I'm currently ... Nunit like everyone is saying. See Question&Answers more detail:os...

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

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283 views

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c# - For Loop result in Overflow with Task.Run or Task.Start

got a Problem, hope someone can help me out. i try to start 4 Task in an Loop but im getting an ... } } any idea? Regards Sam See Question&Answers more detail:os...

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

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277 views

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c# - CrystalReport Load report failed

I have a windows application project (C# and .NET 2.0) that used Crystal Report 2008. But I get error ... How can I solve this 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# - Can I await an enumerable I create with a generator?

Let's say I have a sequence of integers I obtain asynchronously. async Task<int> GetI(int i){ return await ... to implement this pattern 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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c# - Meaning of text between square brackets

I have seen a lot of C# programs that use the [], for example [STAThread] and then the code follows. ... what do they tell the 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# - Visual Studio 2008 - Moving files at build to bin/

EDIT: This is a VS2008 app written in C#. So I have a folder in my solution called _lib/ It's where I ... Instead of /bin/thedll.dll 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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c# - Visual Studio 2010 Can no longer build .NET v3.5

I have a 2010 project that is targeting .NET v3.5. Inexplicably I can no longer build v3.5 projects. The ... chance to reinstall my main OS. See Question&Answers more detail:os...

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

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469 views

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c# - Best way to determine if a domain name would be a valid in a "hosts" file?

The Windows Hosts file allows you to associate an IP to a host name that has far greater freedom than a ... there are more special cases. See Question&Answers more detail:os...

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

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324 views

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c# - Can sql server queries be really cancelled/killed?

I would like to give a user the ability to cancel a running query. The query is really slow. (Query optimization ... a long query from .NET? See Question&Answers more detail:os...

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

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426 views

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c# - How to determine Windows.Diagnostics.Process from ServiceController

This is my first post, so let me start by saying HELLO! I am writing a windows service to monitor the ... this problem? Many thanks, Alex See Question&Answers more detail:os...

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

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547 views

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c# - can linq expression be case insensitive

i am leveraging this project to use jqgrid to filter and sort collections. The one missing feature is that ... string).GetMethod("Contains"), See Question&Answers more detail:os...

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

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270 views

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c# - How to get properties of a class in WinRT

I am writing a Windows 8 application in C# and XAML. I have a class with many properties of the same type ... show anything useful I could use. See Question&Answers more detail:os...

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

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405 views

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c# - Why is BinaryFormatter trying to serialize an Event on a Serializable class?

I have a simple class that is marked as Serializable, and it happens to have an event. I ... event SomeOtherEventDefinedElsewhere TheEvent; } 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# - serializing data using json.net size limit?

I have developed an asp.net web application and initially serialized some data to a json string using the built ... answer. 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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