I would like to implement singleton pattern in StudentProvider and then access method through interface. StudentProvider constructor accepts few parameters. Here's the sample working code without singleton. public interface IStudentProvider { Task<StudentViewModel> GetStudentAsync(); } public class StudentProvider : IStudentProvider {…
I’m trying to run ASP.Net Core 5.0 on Ubuntu 20.04 server and I’m getting a white screen after everything is running. Network tab in FireFox is giving the HTTP/1.1 500 Internal Server Error, so Ive been searching the internet for…
anyone know how does it cause ASP.NET codebehind can't acquire the selected value. What I found is the problem is the javascript function; set attribute portion: process.options[process.selectedIndex].setAttribute("style", "color:red;font-weight:600;"); process.options[process.selectedIndex].setAttribute("disabled", "disabled"); If I remove these setAttribute portion, ASP.NET codebehind can acquire…
I am learning C# and how to use Entity Framework. I believe that I know what is Cascade, Restrict, NoAction and SetNull behaviors. But there are other behaviors with the prefix Client: I would like to understand what are the…
i was containerizing my .Net + React.js application but during the process I have encountered an unexpected error. I got myself acquainted with similar posts but none of the solutions solved my problem. Since the build log is quite long…
I have a object of type. class A { public int Id{get;set;} public decimal? Num {get;set;} } Then I have List<A> objList data populated from db . I need to make Num as positive number , so I tried to…
I need help in this code, something wrong is not right lol... I'm trying to run in InMemory database but I wasn't successful. I'm using Microsoft.AspNetCore.App 5.0.12 Microsoft.AspNetCore.App 6.0.0 Microsoft.NETCore.App 5.0.12 Microsoft.NETCore.App 6.0.0 Microsoft.WindowsDesktop.App 5.0.12 Microsoft.WindowsDesktop.App 6.0.0 [error image] https://i.stack.imgur.com/5tFrN.jpg…
I am trying to send values to a stored procedure via a listbox containing country names I get them from the database. If I choose one option code works 100% 100%. But if I put 2 or 3 options, I…
After updating to .NET 6 I get this error when running my ASP.NET app inside a Docker container: An unhandled exception was thrown by the application. System.IO.FileNotFoundException: Could not load file or assembly u0027Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeedu0027. The system cannot…
I am working on a Data Entry system for storing users financial data. Each user will enter his Revenues and Expenses each in a table. The tables were designed as follows: Primary Key: Rev/Exp ID Foreign Key: Organization ID This…