Recent questions tagged C#

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c# 6.0 - What do dollar symbols in C# Code mean?

Today, I pull the code from my client, and I get an error in this line. throw new Exception($"One or more ... weird with me. This is C# 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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c# - PostSharp inserting k__Backing Field into Entity Class, causing Database generation to fail

I'm creating a Database using the Microsoft Entity Framework and CodeFirst in C#. I want to use the Database ... postings. Thank you 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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615 views

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c# - Process.StartTime Access Denied

My code needs to determine how long a particular process has been running. But it continues to fail with an ... group exists on this machine. 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 specify the equivalent of /features:strict (of csc.exe) to msbuild.exe or in the .csproj file?

Introduction Consider this simple (and bad) C# class: using System; namespace N { static class C { static ... and compile through msbuild.exe. 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# - CLR sequential structs layout: aligning and size

All structs in C# by default are treated as [StructLayout(LayoutKind.Sequential)]-marked value types. So lets ... explain me this behavior? See Question&Answers more detail:os...

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

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611 views

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c# - does valueType.ToString() does a cast on the valueType?

lets say, i have the following code in c# int x = 0; x.ToString(); does this internally does a ... see this happening from visual studio? 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 change the querystring on the same page without postback

I want to change the querystring on the page where I write notes. When I save the note I want the ... to change the querystring like 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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568 views

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c# - How to detect : scrolling - up or down?

System.Windows.Forms.Form has only one scroll event-Scroll, but it is necessary to recognize scrolling up and scrolling ... me,how to 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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c# - Why are there extra arguments in my wcf web service reference?

I'm trying to convert an ASP.Net web service to WCF application. The client is on the .Net Compact Framework which ... do I get it to stop? See Question&Answers more detail:os...

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

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658 views

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c# - Winforms Format TextBox To Currency

I am new to Winforms development and I going to be displaying data to my users in a textbox. The textbox ... Does anyone have any suggestions? See Question&Answers more detail:os...

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

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563 views

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c# - How to stop co-routine?

When two co-routines are running, how do you stop the first co-routine? GLOBALS.stableTime = 5; IEnumerator ... ("StableWaittingTime"); } } See Question&Answers more detail:os...

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

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414 views

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c# - How to put exe file in windows Startup

I have WPF Application. I want to give ability for user by checkbox to put App (exe file) to the windows ... I do this programmaticaly 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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446 views

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c# - Converting string to decimal

In C#, I'm trying to convert a string to decimal. For example, the string is "(USD 92.90)" How would ... as a decimal with Decimal.Parse fcn. See Question&Answers more detail:os...

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

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707 views

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c# - Using SignalR with Azure Service Fabric

Is it possible to use signalR with Service Fabric provided by Microsoft? I'm trying to connect an UWP app and ... Fabric? Is there any example? See Question&Answers more detail:os...

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

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571 views

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c# - IEnumerable<T> null coalescing Extension

I frequently face the problem to check whether an IEnumerable<T> is null before iterating over it through foreach or ... ..) 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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492 views

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c# - FileVersionInfo.GetVersionInfo() incorrect in Console Application

I'm getting some serious weirdness using FileVersionInfo.GetVersionInfo() and was hoping somebody might be able to help. ... )); } } } See Question&Answers more detail:os...

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

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459 views

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c# - ASP.NET MVC5/6 Routing based on Http Header values

Let's say I have a most basic controller public class HomeController : Controller { public ActionResult Index(string ... from Web Api. 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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353 views

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c# - Asynchronous code that works in Console but not in Windows Forms

I am trying to write an application the is constantly searching for host on a lan. When I run this as a console ... ; } countdown.Signal(); } } See Question&Answers more detail:os...

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

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337 views

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c# - Duplicate key error with SonarQube 5.2

I've been trying out SonarQube 5.2, but I'm getting errors such as these: org.apache.ibatis.exceptions. ... else ran into 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# - Serialising BigInteger using System.Text.Json

I'm serialising a BigInteger to JSON using System.Text.Json: JsonSerializer.Serialize(new {foo = new ... hacking the serialised 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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357 views

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c# - How to redirect process output to System.String

I am calling Java process from .NET application and I need to redirect console output to System.String to do some ... ) { 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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648 views

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c# - How to bind data in datagridview combobox column

Here are contacts but we can have multiple contacts so i want to show a list in combobox DataTable dt = ... contacts in dgv combobox column 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# - Combobox borderstyle

Hi I have set the combobox control's flatstyle to flat. Is it possible to draw a border around this control? ... flat if at all possible. See Question&Answers more detail:os...

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

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700 views

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c# - DataBindingComplete is getting called multiple times

I am creating a windows application in c#, I have 1 Datagridview and after I set it's DataSource it should have ... it? 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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764 views

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c# - Linq :DataTable select does not work if column name has space in it?

I want to select rows from DataTable. Select criteria includes anding and the columns name have a space b/w them ... What am I missing 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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461 views

1 answer

c# - Get Desktop Size from Windows Service?

I'm trying to get the size of the Windows' desktop (the whole thing, not just a single screen) from inside a ... winforms app to figure it 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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596 views

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c# - ASP.NET Core with optional authentication/authorization

I want to build an ASP.NET Core based WebApi for accessing data from a database. This WebApi could be used ... a switch in the configuration. 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

1 answer

c# - Is it possible to read-lock a file?

I'm developing an application which checks for changes made to a file by a separate program (not written by me) ... me from even reading 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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