Recent questions tagged C#

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c# - How to await the results of an IAsyncEnumerable<Task<T>>, with a specific level of concurrency

I have an asynchronous stream of tasks, that is generated by applying an async lambda to a stream of ... for the awaiting/merging operation. 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# - Using ternary operator on Console.WriteLine

I need to print some string based on the true or false of a condition. For example: if(i == m) { ... someone please tell me the correct 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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423 views

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c# - Copy Folder/File wiithout modifying attributes?

Is it possible to copy a file or a folder from one location to another without modifying its attribute data? For ... 3/2007...is that 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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c# - Create an instance of a Type, provided as a parameter to a method

The class to instantiate: public class InstantiateMe { public String foo { get; set; } } Some pseudo- ... never worked with reflection before. 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# - DataGridView write all values from a column to list

I'd like to write all values from column 2 to a list: List<string> list = new List<string>(); foreach ( ... ; } However, this returns an 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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334 views

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c# - Compare datatables

I built an application which displays the records from database in the window and checks the the database for new ... ; } return result; } 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# - Unable to write data to the transport. Vs2017 ASP.net core Scaffolding ( MSSQL WINDOW 10)

I am trying to create a controller by scaffolding. But I receive this error There was an error running the ... no lucky Can anyone 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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c# - Using Nswag with Odata creates error when try to access swagger endpoint

We are trying to use Nswag and Odata both in our asp.net core API project. We can either Nswag for API ... Please help to 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# - How can I programmatically create an Excel "sort/Filter combobox"?

I'm reverse-engineering a manually created spreadsheet for dynamic creation. Most of the cells are populated with simple ... I do with 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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c# - Why OrderByDescending not recognized as build method

private static void findNewestFile(List<string> list) { foreach (string dir in list) { var directory = new ... or an assembly reference?) See Question&Answers more detail:os...

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

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331 views

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c# - Silverlight: How to create a page dynamically

Problem: I store the page name I want opened in Silverlight in a database. When I startup the ... new instance (SomeWizzyMethodToCreatePage). 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 load a local html file in a xamarin forms webview

I am trying to load a html file that is in the same path as class i'm working with Via a web view in xamarin forms ... = "local.html" }; } } } See Question&Answers more detail:os...

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

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413 views

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c# - How to find ExtJS elements with dynamic id

I am working with Selenium and need to get the ID of a control but the ID is dynamic and I can't get ... has same beginning button-###+btnWrap. See Question&Answers more detail:os...

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

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404 views

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c# - Does the WebAuthenticationBroker work in Windows 8 Metro App post Release Candidate

SOLUTION My working solution can be found in the answer or in my update two. 1) Now make sure, for testing ... :909090/api/federation/end")); See Question&Answers more detail:os...

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

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372 views

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c# - Check if MS Access 2010 is installed

I am maintaining an application which currently checks to see whether MS Access 2007 is installed. It ... user has administrator privileges. See Question&Answers more detail:os...

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

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923 views

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c# - The context is being used in Code First mode with code that was generated from an EDMX file

I am developing an MVC 5 application with EF 6 database first approach. Now I want my DbContext to ... Multi-Tenant application Regards. See Question&Answers more detail:os...

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

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364 views

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c# - Textbox disabled with a huge string

I'm having a issue with a textbox when it's typed a huge string. In my case, the textbox is used to write ... ; Should I use RichText, or what? See Question&Answers more detail:os...

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

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397 views

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c# - Array memory allocation - paging

Not sure if the answer would be the same for Java, C# and C++, so I categorized all of them. ... that allocated array would be paginated? See Question&Answers more detail:os...

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

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622 views

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c# - Check if column exists in OleDb table

I am trying to check if a column exists and if not, add it. I've tried a couple of solutions including this ... or something. What am I 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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267 views

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c# - How to generate dynamic labels and use the column name and value as the text

Is there any way, if it is possible to dynamically generate the ASP.net page from code-behind. Example: ASP ... :Repeater control to achieve 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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315 views

1 answer

c# - Access model class instance from a custom AdditionalMetadataAttribute (asp.net mvc 5)

I have the following situation - I need to write a custom additional metadata attribute, that based on another ... you again @stephen-muecke! See Question&Answers more detail:os...

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

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582 views

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c# - OracleConnection is throwing empty exception

I'm trying to connect to my Oracle Database from my new PC. I've just installed Visual Studio and the ODAC. ... connect just find with SQL*PLUS See Question&Answers more detail:os...

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

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465 views

1 answer

c# - Why do environmentVariables from launchSettings.json profiles not load when aspNetCore web.config sections exist?

We recently upgraded a .NET Core 2.1 Web App to .NET 3.1. Ever since, our profiles in launchSettings.json ... when none is found/specified). See Question&Answers more detail:os...

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

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379 views

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c# - ML.NET Create Prediction Engine using Dynamic Class

I have an ML.NET application where I have to create interface IDataView dynamically after compile time to be used for ... , data.Schema); } } 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# - Linux: Mono installation and errors

Over the past weeks I struggled to get a working Mono installation without success. I have tried it on Debian6_x64 ... that could help. 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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389 views

1 answer

c# - Open text file, loop through contents and check against

So I have a generic number check that I am trying to implement: public static bool isNumberValid(string Number) { } ... to the end: 4564 true 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# - File Upload read to memory and use as text file - is there a better way?

I have a intranet hosted web application where the user will upload a text file with space delimited data in 5 ... with the file stream part. See Question&Answers more detail:os...

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

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632 views

1 answer

c# - Using JSON.NET to serialize object into HttpClient's response stream

Abstract Hi, I'm working on a project where it is needed to send potentially huge json of some object via ... me, 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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