Recent questions tagged C#

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c# - ASP.NET 5: Access-Control-Allow-Origin in response

From what I understand, when enabled CORS accordingly, the response model should include the following header ... not allowed access. See Question&Answers more detail:os...

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

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499 views

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c# - programmatic textblock entry with linebreaks

How do I programmatically add text with line breaks to a textblock? If I insert text like this: helpBlock.Text ... , but nothing from 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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585 views

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c# - How do I read exactly n bytes from a stream?

This is a little more tricky than I first imagined. I'm trying to read n bytes from a stream. The MSDN ... they are available in the stream. 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# - HTMLAgilityPack SelectNodes to select all <img> elements

I am making a project in C# that's basically an image screen scraper for an image-search related game. I'm ... versions and lost my work. Derp. See Question&Answers more detail:os...

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

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408 views

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c# - Detect system language change in WPF

We can use following code to know when the system language change in Windows Form - Form.InputLanguageChanged ... of Form.InputLanguageChanged? See Question&Answers more detail:os...

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

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355 views

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c# - Casting between two types derived from the (same) interface

I have an interface and two types that derive from it. However, I cannot do the following: B objectB = (B) ... the interface, 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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c# - ASP.NET Core giving me Code 500 on Forbid()

I tried to solve this for hours now and I can not find anything. Basicly I have a simple controller which ... to find out why this happens. See Question&Answers more detail:os...

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

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653 views

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c# - Optional arguments in a generic Func<>

I have the following method in an assembly: public string dostuff(string foo, object bar = null) { /* ... ... me to ignore that second argument? 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# - Remove list elements at given indices

I have a list which contains some items of type string. List<string> lstOriginal; I have another list which contains ... index is Out of Range." 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 initialize multi-dimensional array with different default value

I am trying to initialize 2-dimensional array of integer values with -1. When I create a new array, it is ... I stuck with 2 for cycles? See Question&Answers more detail:os...

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

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530 views

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c# - Redirecting in blazor with parameter

Hello how can you redirect to another page in Blazor with a parameter? @page "/auth" @using Microsoft.AspNetCore. ... it a string as parameter. See Question&Answers more detail:os...

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

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430 views

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c# - Attribute Routing and CreatedAtRoute

I am trying to convert my Web Api project to use attribute routing. One thing I am not understanding is ... that handled with attribute routing? See Question&Answers more detail:os...

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

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493 views

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c# - Custom PowerShell Host and Converting PSObject back to base type

When hosting the PowerShell runtime is it possible to convert a PSObject back into its original type some how ... seeing such strange 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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635 views

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c# - form validation allow only english alphabet characters

I'd like to restrict my form input from entering non-english characters. For example, all Chinese, Japanese, ... . Please advice, 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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433 views

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c# - Deserialize JSON object property to string

I have some JSON that has a variety of properties most of which are simple data types. However, I have one ... as a string instead of JSON? 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

1 answer

c# - adding a handler to all clients created via IHttpClientFactory?

Is there a way to add a handler to all clients created by the IHttpClientFactory? I know you can do ... me via: clientFactory.CreateClient(); See Question&Answers more detail:os...

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

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463 views

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c# - How to handle multiple ResultSets, each with multiple Rows? IDataReader.NextResult() ending Read()

How to handle multiple ResultSets, each with multiple Rows? The call to NextResult() breaks the while loop. Some of my ... out of the while } } See Question&Answers more detail:os...

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

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798 views

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c# - Exclude a column from a select using LINQ

I'm developing a WCF RESTful web service with Entity Framework Code First. I have a table Users with a ... password column from that select? See Question&Answers more detail:os...

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

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464 views

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c# - Build .Net Core as an EXE not a DLL

I want to build a .NET Core project as a EXE and not a DLL so it can be executed. The answer here did not ... that run on a mac or other device? See Question&Answers more detail:os...

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

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562 views

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c# - From HWND to control

Im using the FindWindow method from user32.dll to find a window and get the handle, but is it possible to get ... send a message to the window? See Question&Answers more detail:os...

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

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1.2k views

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c# - How to bind a DataGridView to a SQLite Database?

I'm trying to add a data connection to a datagridview that uses SQLite. I've added the reference to ... help would be appreciated. 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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839 views

1 answer

c# - GitHub Commit Error: Permission denied fatal: Unable to process path ~/App_Data/aspnet-MyProject.mdf

I am attempting to commit an update to my ASP.Net MVC project using GitHub integration in Microsoft Visual ... project's App_Data folder. See Question&Answers more detail:os...

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

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690 views

1 answer

c# - Delegate to an instance method cannot have null 'this'

I am developing a C# .NET 2.0 application wherein at run-time one of two DLLs are loaded depending on the ... ." What 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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401 views

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c# - What is the ampersand character at the end of an object type?

I had to de-compile some code and I don't know what this syntax is? Can y'all help, or point me to a write ... ; } } e.HasMorePages = flag; } See Question&Answers more detail:os...

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

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376 views

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c# - RemoveAt(x); Does it dispose the element x?

I have a Cache to store the most two recent images every time the user clicks the next image, Does the "RemoveAt ... image has index 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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375 views

1 answer

c# - Set selected value of a 'Select' HTML control

How can I set the selected value of a Select HTML control from a code-behind file using ASP.NET and 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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780 views

1 answer

c# - Invalid URI: The Uri string is too long

I am trying to grab a schema and validate against my xml. XmlReaderSetting settings = new System.Xml. ... ever get this 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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627 views

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c# - Draw a filled triangle in DrawingContext

This is a follow up from this question. Question: I am trying to draw a filled triangle using DrawingContext, which ... also has a red fill? See Question&Answers more detail:os...

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

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