Advertisements I need to loop the List and then extract the specified items which starts with ‘OO’ to New list Here is my code :- List<string> mylist = new List<string>() Mylist.add(“5876575”); Mylist.add(“OO12571”); Mylist.add(“12287324”); Mylist.add(“87665751”); Mylist.add(“97213233”); Mylist.add(“87612222”); Mylist.add(“OO76566”); List<string> matches = new List<string>() matches = myList.Where(x => x[0] == ‘OO’).ToList(); My above code is not working… Read More How to loop through a list and filter items starting with 'OO' in C#?

Advertisements Is there are a way to achieve the following in .net6: if (x != (a || b)) { Do something } for when a or b are not Boolean values? Specifically a case when x,a and b are enums or numeric values like this: enum Animal : byte { Cat, Dog, Cow, Dolphin, Horse,… Read More Conditional logic case (x == (a || b))

Advertisements Visual Studio 2019 is acting like this static void Main() doesn’t exist. using System; namespace Paint { class Program { void static Main(string[] args) { Paint(); } void Paint() { string[] tiles = new string[256]; var newkey = Console.Read(); int paint = Convert.ToInt32(newkey); tiles[paint] = "Test"; Console.WriteLine(tiles[paint]); Console.Beep(); Console.ReadKey(); Paint(); } } } I… Read More C# isn't detecting my static Main() for an entry point

Advertisements I pressed F12 by mistake on Point type and I saw something like: public int X { readonly get => x; set => x = value; } I’m not getting this, I know that X is not readonly here, also if it was going to be read-only there shouldn’t be a setter. what does… Read More what does readonly means before getter while it also have a setter

Advertisements I am trying to access a return value in a getter and use it in a conditional statement to disable a feature. I will organize the code below so you get a better understanding of what is going on since the value is being passed to a interface. I have declared the function inside… Read More Accessing return value from getter and setter in C#

Advertisements I have the following implementation which uses .NET 7’s static abstract member functionality: public interface IFoo { public static abstract string Bar { get; } } public class Foo : IFoo { public static string Bar => "Bar" } Now, whenever I use the interface as a type parameter to a generic class, I… Read More The interface cannot be used as type argument. Static member does not have a most specific implementation in the interface

Advertisements I try to update a progress bar while awaiting a async IO operation. The following code is doing that. Task<string> io = SomeOperationAsync(); while(!io.IsComplete) { progressBar.Value = value // add some progress; await Task.Delay(TimeSpan.FromMilliseconds(200)); } string result = await io; This works quite ok.The Progressbar fills up quite smoothly. But as you see, I… Read More Updating a progress bar while awaiting async operation

Advertisements The below code works for all of the custom date format strings except for the ones relating to time. The ToString returns zeroes for any custom format except the ones containing dates. Is it possible to use the custom formats for time in the way that I’m attempting or do I need to do… Read More How to use custom DateTime string format for time without the date portion?

Advertisements When i am trying to solve problem on codewars, get this error. My code passes all the tests but not optimized . Do u have any advice ? Problem : https://www.codewars.com/kata/525e5a1cb735154b320002c8/train/csharp C#: code >Solution : the problem is that you are using a brute-force solution! when you have an algorithmic/mathematics problem you should think… Read More Execution Timed Out (12000 ms) : How can I fix this error

Advertisements I am a new user to C# and I am having difficulty with one last thing to finish this script I am working on. I am in .NET 5.0. I am working on writing some results out to a csv file but when I use the string.Format() method, I am only getting the first… Read More Using String.Format() Method in .NET 5.0 in C#