Recent questions tagged C#

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c# - How to draw Chart based on DataTable from console application?

How to use System.Windows.Forms.DataVisualization.Charting.Chart inside console application to draw an graph and save it to 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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c# - How to access JsonResult data when testing in ASP.NET MVC

I have this code in C# mvc Controller: [HttpPost] public ActionResult Delete(string runId) { if (runId == "" || ... to do. Any Ideas? 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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c# - How to encode the ampersand if it is not already encoded?

I need a c# method to encode ampersands if they are not already encoded or part of another encoded epxression eg ... tom "&" jill" 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# - Difference between Attached and non-Attached Dependency Properties in Silverlight

Okay Stackers, I've spent a good couple of hours on this question, and I want to know if anybody has a ... just screwing with me once again. 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 get the child declaring type from an expression?

I have a Parent / Child class hierarchy where the Parent abstractly declares a string property and the Child ... memberExpression.Member; } } 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# - Check if any property of class is null

I have following class:- public class Requirements { public string EventMessageUId { get; set; } public string ... Avoioding For/foreach loop. 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# - Setting Label Text in XAML to string constant

I have a single string constant that I have to re-use in several different XAML layouts, so instead of ... value that will never change. 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# - What's the fastest way to compare two arrays for equality?

I have two arrays of objects which are likely to have the same values, but in a different order, e.g. { "cat ... s the fastest way to test 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# - How to switch between target frameworks for .NET Core projects in Visual Studio

Say you have a .NET Core project that looks like this: "frameworks": { "net40": {}, "dotnet5.1": {} ... . Any 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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c# - How to convert time between timezones (UTC to EDT)?

I need to have a common function to convert UTC time to EDT. I have a server in India. An application in ... with this or any other solution. 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# - Is there an API for verifying the MSIL of a dynamic assembly at runtime?

When using Reflection.Emit to build an assembly at runtime, I'd like to verify the assembly MSIL before saving to ... . Is there such an API? 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# 9.0 - c# 9.0 records - reflection and generic constraints

Two questions regarding the new records feature : How do I recognize a record using reflection ? looking [here][ ... class using a constraint ? See Question&Answers more detail:os...

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

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282 views

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c# - Open an URL in the Default Web Browser in WinRT

The question says it all. Basically, I just want to know the alternative for this in WinRT: Process.Start("http://www.google.com/"); See Question&Answers more detail:os...

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

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302 views

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c# - Overwrite customattribute on derived class

We have a custom attribute [AttributeUsage(AttributeTargets.All, AllowMultiple = true)] public class CustomDesignerAttribute ... his own? 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# - Access DisplayName in xaml

How can i access DisplayName's value in XAML? I've got: public class ViewModel { [DisplayName("My ... and present something from Resources. See Question&Answers more detail:os...

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

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279 views

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c# - Windows 8 - How to Dismiss Touch Keyboard?

I am developing my app for Windows 8 in C#, and one very annoying thing is that the touch keyboard sometimes ... that I need to use. See Question&Answers more detail:os...

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

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259 views

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c# - What happens if the first part of an if-structure is false?

I was wondering what happens when a program processes an if-structure with multiple conditions. I have an idea, but I'm ... , but I'm not sure. 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# - Should I always use transactions in nhibernate (even for simple reads and writes)?

I know that for multi part writes, I should be using transactions in nhibernate. However what about for simple read and ... .Commit(); } } } 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# - Reading unicode from console

I am trying to read unicode string from a console in C#, for the sake of example, lets uset his one: c: ... the full native code I've used. See Question&Answers more detail:os...

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

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386 views

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c# - WPF Application exit code

I am trying to set and get the application exit code . I am trying to do something following : protected override ... idea what is the issue ? See Question&Answers more detail:os...

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

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302 views

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c# - Non-nullable string type, how to use with Asp.Net Core options

MS states Express your design intent more clearly with nullable and non-nullable reference types. My intent is to ... nullable makes no 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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344 views

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c# - Cannot debug a unit testing project in Visual Studio 2012

I couldn't find a post similar to this, so I hope this isn't a duplicate. I have a c# class library that I'm ... bytes = new ByteList //} } } 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

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c# - When using FileStream.ReadAsync() should I open the file in async mode?

The old .Net way of performing asynchronous I/O for a FileStream is to use FileStream.BeginRead() and ... not open the file asynchronously! See Question&Answers more detail:os...

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

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298 views

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c# - WPF invoke a control

How can I invoke a control with parameters? I've googled this up, but nowhere to find! invoke ui thread This ... just want to read its content? See Question&Answers more detail:os...

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

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553 views

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c# - How can I change the CurrentCulture of the entire process (not just current thread) in .Net?

I have a situation where I need to set my process' locale to en-US. I know how to do this for the ... without setting it in each one manually? See Question&Answers more detail:os...

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

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419 views

1 answer

c# - How to set a data type for a column with ClosedXML?

I see a lot of examples in documentation where data type for a cell is set: ws.Cell(1, 1).SetDataType( ... fixed, or is there a workaround? See Question&Answers more detail:os...

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

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284 views

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c# - .Net Dictionary<int,int> out of memory exception at around 6,000,000 entries

I am using a Dictionary<Int,Int> to store the frequency of colors in an image, where the key is the the ... problem only happens in ASP.Net. See Question&Answers more detail:os...

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

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1.1k views

1 answer

c# shorthand for if not null then assign value

Is there any shorthand in c# now that will cutdown the following code: var testVar1 = checkObject(); if (testVar1 ... value; RunSomeCode(); } } See Question&Answers more detail:os...

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

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