Recent questions tagged C#

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c# - How to use Bootstrap Carousel in Blazor

newbie in Blazor. Need to try out how to use BS carousel in Blazor. I used below code in the Default Blazor app. ... script> </body> </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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264 views

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c# - Does async and await increase performance of an ASP.Net application

I recently read an article about c#-5 and new & nice asynchronous programming features . I see it works ... that two codes difference? 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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151 views

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c# - LINQ join with OR

I want to do a JOIN with LINQ using an OR statement. Here is the SQL query I'm starting with: SELECT t.id ... hacky. Is there a better 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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272 views

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c# - List Index Out of Range exception when creating a task

The exact error: Index was out of range. Must be non-negative and less than the size of the collection. I've ... ]); it works with no issues. See Question&Answers more detail:os...

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

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293 views

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c# - How to set default input value in .Net Console App?

How can you set a default input value in a .net console app? Here is some make-believe code: Console.Write(" ... has nothing to do with 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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379 views

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c# - Is there a way to automatically generate equals and hashcode method in Visual Studio

In Java when you want to have remove correctly object from a generic Collection by remove() method you have to ... return false; return 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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578 views

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c# - HttpClient Not Saving Cookies

I am using the new HttpClient to handle my project's web surfing needs; However, although correctly set, the ... var cookies = Cookies; } 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 Binding Programmatically

I am attempting to convert this xaml binding to it's C# counterpart for various reasons: <ListView x:Name=" ... pretty lost as to 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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680 views

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c# - HTTP Error 403.14 - Forbidden - MVC 4 with IIS Express

This seems like a question that has already been asked/answered many times. Its not. Development Environment: VS ... in advance for your 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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395 views

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c# - Could not determine JSON object type for type "Class"

I got the following error while trying to add an object of type class to the JArray. Could not determine ... much appreciated. Thank you. See Question&Answers more detail:os...

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

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374 views

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c# - Cannot implicitly convert type 'string' to 'int'

I keep getting the debug error "cannot implicitly convert type 'string' to 'int'" in C#. Here is a snippet ... client.SendTo(packetData, ep); } 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# - DragDrop text from browser to TextBox

I'm trying to drag and drop some text from a webpage to a textbox on a Winform. All works as expected from MS ... s causing my issue? Thanks, J. 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# - Formatting currency

In the example below, comma is the decimal separator. I have this : 125456,89 I'd like have this : 125.456,89; ... ,89 => 23.456.789,89 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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511 views

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c# - The name 'xyz' does not exist in the current context

This is probably really basic in C#, but I looked around a lot to find a solution. In my MVC controller's ... accounttype + "some other text" } See Question&Answers more detail:os...

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

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253 views

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c# - How do I handle DependencyProperty overflow situations?

I have a UserControl and an int DependencyProperty called Value. This is bound to a text input on the UserControl. public ... a way 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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191 views

1 answer

c# - Use XPath with XML namespace

I want to process the xml below with XPath: <?xml version="1.0" encoding="utf-8"?> <ServiceConfiguration serviceName ... ", "hello, world!"); 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

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c# - Downloaded file using webclient.DownloadFileAsync has 0KB

I'm trying to download zend-framework (from http://framework.zend.com/releases/ZendFramework-1.11.11/ZendFramework- ... by WebClient. 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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218 views

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c# - OAuth2 Resource Owner Password Grant via API

I am currently building an API which requires OAuth2, but cannot find a library to use that will handle the ... manner normally take this long? See Question&Answers more detail:os...

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

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148 views

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c# - Keep running a specific number of tasks

I have been trying to do this: Create 'N' Task to execute and keep running this number of taks for a period ... keep the same number of tasks? See Question&Answers more detail:os...

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

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673 views

1 answer

c# - How to zoom in using Mouse Position on that image

I have a userControl library, which consists of the main Panel and a PictureBox, I want to make a zoomable PictureBox ... (deltaX, deltaY); } } See Question&Answers more detail:os...

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

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309 views

1 answer

c# - Regex - only matching wildcard of a certain length or less

Is there a way to have a Regex statement search for a wildcard with a maximum length? For ... somestuffblahblahmorestuff Is this 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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397 views

1 answer

c# - Dynamic filtering using Linq

I have a List<Device>. In the Device class there are 4 properties, namely Name, OperatingSystem, Status and ... to be in both) }` See Question&Answers more detail:os...

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

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257 views

1 answer

c# - Open ExcelPackage Object with Excel application without saving it on local file path

I have a text file with some information and I convert it to ExcelPackage Object using EPPlus, now I want to know ... a file, and then open 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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207 views

1 answer

c# - Unable to access jar file

I have a c# program that access a java program by tcp. In my C# program I'm starting the java program by ... no idea what the problem could be. See Question&Answers more detail:os...

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

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573 views

1 answer

c# - How to backup a SQL Server 2014 Express Localdb (.mdf) file programmatically

I have simple Windows application which uses SQL Server 2014 LocalDB (.mdf file). And I want that whenever users ... Environment.Exit(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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270 views

1 answer

c# - No connection string named 'x' found in application config file... but it works?

I've seen several different questions relating to this error but none seem to be quite what I'm experiencing. I ... to why this is happening? See Question&Answers more detail:os...

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

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329 views

1 answer

c# - Archive or image is corrupted after uploading to FTP and downloading back with FtpWebRequest

I have two methods: Uploads files to the FTP Server Downloads Files from the Server. Everything works perfectly ... .StatusDescription; } } } See Question&Answers more detail:os...

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

0 votes

207 views

1 answer

c# - Starting a process from ASP.NET - Why does the process immediately die?

I'm attempting to start a Process from an ASP.NET C# application. My application communicates with this process via ... } } return retVal; } See Question&Answers more detail:os...

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

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