Recent questions tagged C#

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c# - Find average of collection of TimeSpans

I have collection of TimeSpans, they represent time spent doing a task. Now I would like to find the average ... /sortedDates.Count()); } See Question&Answers more detail:os...

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

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219 views

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c# - Prevent usage of default constructor

Is there a way to prevent the usage of the default constructor? All I can think of is throwing an exception, ... causes a compile time 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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467 views

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c# - How can I connect xaml and xaml.cs files

I had a VB projected and converted it to C# using online conversion tools. Now the problem is xaml and xaml.cs ... be a layman sort of question. 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# - ExecuteNonQuery requires the command to have a transaction error in my code

I get the following error on cmd.ExecuteNonQuery. "ExecuteNonQuery requires the command to have a transaction when the ... how to solve 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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185 views

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c# - ASP.NET MVC WebAPI 404 error

I have an asp.net web forms application running under v4.0 integrated mode. I tried to add an apicontroller in ... as shown in the image below. See Question&Answers more detail:os...

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

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198 views

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c# - Yield Return In Java

I've created a linked list in java using generics, and now I want to be able to iterate over all the ... . Built-in java functionality only. 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

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c# - Is there a situation in which Dispose won't be called for a 'using' block?

This was a telephone interview question I had: Is there a time when Dispose will not be called on an ... I have misunderstood the question? 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# - Error: Reference to type claims it is defined, but it could not be found

I have a solution with 3 projects: ParsersBase, that define an interface IParseRule ParsersLibrary, that have a reference ... 't make any sense. 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# - Intellisense not automatically working VSCode

I just downloaded Visual Studio Code and my Intellisense is not automatically working. The two settings that control this ... am i doing 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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235 views

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c# - How to make a WPF window be on top of all other windows of my app (not system wide)?

I want my window to be on top of all other windows in my application only. If I set the TopMost property of ... and I don't want 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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285 views

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c# - Make TextBox uneditable

I want to make some TextBoxes on my form uneditable, but I want the text to be clear (black not gray) and ... color. Does anyone have any clue? See Question&Answers more detail:os...

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

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112 views

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c# - Select last element quickly after a .Split()

I have this code : stringCutted = myString.Split("/"). // ??? and I'd like to store in stringCutted the ... .length]. Is this possible 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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258 views

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c# - null conditional operator not working with nullable types?

I'm writing a piece of code in c#6 and for some strange reason this works var value = objectThatMayBeNull?. ... operator ?. isn't working? 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# - Two output file names resolved to the same output

Recently I created new Form called WorkersScreen. When I try to run the project I got this error: Error 1 Two ... and how does one resolve 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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757 views

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c# - Unit testing controller methods which return IActionResult

I'm in the process of building an ASP.NET Core WebAPI and I'm attempting to write unit tests for the controllers ... HttpStatusCode.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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323 views

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c# - Is it more efficient to perform a range check by casting to uint instead of checking for negative values?

I stumbled upon this piece of code in .NET's List source code: // Following trick can reduce the range check by ... code - I'm just curious ;) See Question&Answers more detail:os...

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

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248 views

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c# - Limit Number of Results being returned in a List from Linq

I'm using Linq/EF4.1 to pull some results from a database and would like to limit the results to the (X ... running from a SQL Server database. See Question&Answers more detail:os...

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

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175 views

1 answer

c# - Remove objects with a duplicate property from List

I have a List of objects in C#. All of the objects contain a property ID. There are several objects that have ... are dropped out of the 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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172 views

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c# - XmlDocument - load from string?

protected void Page_Load(object sender, EventArgs e) { XmlDocument doc = new XmlDocument(); try { string path = ... load it from 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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336 views

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c# - How can I truncate my strings with a "..." if they are too long?

Hope somebody has a good idea. I have strings like this: abcdefg abcde abc What I need is for them to be trucated ... code I can use for 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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391 views

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c# - "Missing compiler required member" error being thrown multiple times with almost no changes to code

Today after deploying some changes to a C# MVC site that I run, I went back to make some more modifications ... this before. 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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140 views

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c# - Read Variable from Web.Config

How can I add and read the value from web.config file? See Question&Answers more detail:os...

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

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436 views

1 answer

c# - What's the difference between Uri.ToString() and Uri.AbsoluteUri?

As a comment to an Azure question just now, @smarx noted I think it's generally better to do blob. ... for the specified instance." See Question&Answers more detail:os...

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

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518 views

1 answer

c# - How to get graphic tablet pen pressure value?

I'm using a Wacom Bamboo Pen tablet and I'd like to be able to get its pen pressure value in my application ... to get pen values on Windows 7? 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

1 answer

c# - How to monitor that an application is opened?

I'm implementing a desktop analytics application that needs to record the names and times of programs a user ... approach please advise. 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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290 views

1 answer

c# - Print a ReportViewer Without Preview

I'm using Visual Studio 2010 C# Windows Forms Application + MySql I have a Report Viewer that is working ... correctly. Thanks the attention ! See Question&Answers more detail:os...

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

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167 views

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c# - How to create a binary tree

I did'nt mean binary search tree. for example, if I insert values 1,2,3,4,5 in to a binary search ... so that we can recursively do traversal. See Question&Answers more detail:os...

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

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468 views

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c# - Oracle.DataAccess.Client.OracleException ORA-03135: connection lost contact

I have a .Net service that connects to an Oracle database on every request. It works fine at the beginning, but ... service is, well, very low. See Question&Answers more detail:os...

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

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