Recent questions tagged C#

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c# - How to allow CORS for ASP.NET WebForms endpoint?

I am trying to add some [WebMethod] annotated endpoint functions to a Webforms style web app (.aspx and . ... in these [WebMethod] endpoints? 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 edit the MainWindow constructor of a WPF application?

My mainWindow needs to subscribe to some events from an object. The object is initialized before the MainWindow is ... for the entire program? 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 developing in Mono cross-platform?

In what measure is developing with mono cross-platform? How do I compile for Windows (in Linux), how do I ... (except cross-platform thinghie)? See Question&Answers more detail:os...

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

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226 views

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c# - Regex to get everything after the first space

What would the syntax to get all the words in a string after the first space. For example, bobs nice house. So the ... ,[sS]*$ > not compiling. 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# - Within the Containing Class, Use Property or Field?

Is it good practice to use the private field, or the property, when writing code in the class that contains ... -practice policy to follow 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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177 views

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c# - Dependency Injection in Model classes (entities)

I am building an ASP.NET Core MVC application with Entity Framework Code-First. I chose to implement a ... pattern or something like 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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c# - How to add Headers in HTTPContext Response in ASP.NET MVC 3?

I have a download link in my page, to a file I generate by the user request. Now I want to display the file ... . Can you guys help me out? 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 start a List<Task> in parallel?

I have an object that returns a System.Threading.Tasks.Task: public class MyClass { public Task GetTask(object state, ... to code 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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c# - Reading data from excel 2010 using Microsoft.Office.Interop.Excel

I am not able to read data in Excel. Here is the code I am using: using Excel = Microsoft.Office.Interop.Excel; ... value. How can I fix 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# - When does File.ReadLines free resources

When working with files in C#, I am conditioned to think about freeing the associated resources. Usually this ... locks is non-deterministic? See Question&Answers more detail:os...

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

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366 views

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c# - Gridview get Checkbox.Checked value

I have a GridView that has 10 columns populated by CheckBoxes. But instead of using FindControl() is there a way ... </Columns> </asp:GridView> 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# - How do I allow breaking on 'System.NullReferenceException' in VS2010?

I have a VS 2010 C# .NET 4 project. The issue is that the program is not breaking on ' ... will break on these exceptions? See Question&Answers more detail:os...

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

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225 views

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c# - Can properties inside an object initializer reference each other?

Is it somehow possible for properties to reference each other during the creation of a dynamic object an ... -typed object initializers? See Question&Answers more detail:os...

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

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190 views

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c# - Build JSON response in Web API controller

In a WebAPI project, i have a controller that checks a status of a product, based on a value the user enters. Lets say ... } ] { "status": 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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324 views

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c# - is it better performance wise to use the concrete type rather than the interface

I have run into some rules (recommendations) to use concrete List and Dictionary rather than IList and IDictionary, ... the internals of .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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326 views

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c# - How does Encoding.Default work in .NET?

I'm reading a file using: var source = File.ReadAllText(path); and the character ? wasn't being loaded ... file will be read without problems? See Question&Answers more detail:os...

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

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794 views

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c# - How do I pass the Button as CommandParameter from XAML in a Xamarin.Forms Page?

I would like to pass a Xamarin.Forms.Button in it's own Command as the CommandParameter to my ViewModel. I know ... that didn't work. 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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455 views

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c# - Applying css class using Html.DisplayFor inside razor view

Inside razor view I used model for rendering label like @Html.LabelFor(model => model.MyName, htmlAttributes: new { ... 6 is not apply. 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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263 views

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c# - .Net Core Model Binding JSON Post To Web API

Just started a new project using .NET Core. Added my Web API controller and related method. Using Postman I created a ... ) { return Ok(); } See Question&Answers more detail:os...

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

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378 views

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c# - WPF: how do i handle a click on a ListBox item?

In my WPF app I'm handling a ListBox SelectionChanged event and it runs fine. Now I need to handle a click ... a ListBox click on an item? See Question&Answers more detail:os...

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

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363 views

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c# 4.0 - Intersect two arrays

How can I find the intersecttion between 2 arrays in C#, in a fast way? See Question&Answers more detail:os...

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

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429 views

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c# - Configuring a custom event log for log4net

I'm using log4net for logging (duh!). Using the EventLogAppender, I can configure my application name, so that my ... = "My application name"; See Question&Answers more detail:os...

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

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276 views

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c# - System.Uri.ToString behaviour change after VS2012 install

After installing VS2012 Premium on a dev machine a unit test failed, so the developer fixed the issue. When the ... 3.5 then it succeeds. See Question&Answers more detail:os...

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

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347 views

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c# - Why can TimeSpan and Guid Structs be compared to null?

I've noticed that some .NET structs can be compared to null. For example: TimeSpan y = new TimeSpan(); if ... 't compare structs to null anyway. See Question&Answers more detail:os...

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

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360 views

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c# - WPF Datagrid binding and column display

I have datatable as Item source for DataGrid, this datatable has lots of columns. Is it possible to display ... without creating a new table? See Question&Answers more detail:os...

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

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223 views

1 answer

c# - Should I test that methods don't throw exceptions?

I'm making my first baby steps with unit testing and have written (among others) these two methods: [ ... maybe my interpretation is 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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630 views

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c# - How to handle deserialization of empty string into enum in json.net

I am deserializing json properties into an enum but I'm having issues handling cases when the property is an ... of throwing a runtime 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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273 views

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c# - Get a template error when I try to do this?

I am using asp.net mvc 3 and I keep getting this error and I don't understand it since I am ... or single-parameter custom indexer expressions. See Question&Answers more detail:os...

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

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