help

hi i want to update qty when add item in DataGridView If the row with the same data already exists in DataGridView , just ++ the value of Qty . i don't want add new column. every time add item i just want if the row with same data just update qty here is my code im just learning sorry for...

Hi, I'm a student, I need to finish a WPF project, and I really need your help. At the moment I've made a database, authorization, output of information about entities in DataGrid. I'm a beginner and I can't implement entity search, and I also can't figure out what queries can be made for a...

Help me pls

I've been trying to find a solution to a problem I am having. I am trying to save a picture to the "My Pictures" folder but I keep getting an error in the code saying "cannot convert from 'string' to 'system.environment.specialfolderoption'"...

Hey everyone, I hope you're doing great today. I'm a beginner in C# and I have an assignment where I need to create a blog: These are the criteria that need to be included in the assignment; The blog should be a list that can save string arrays. Each individual blog post should be a string...

How to make arithmetical operations in C#? I'm making a calculator, And I don't know what signs needs to be for Addition, Subtraction and Division. if (aritmeticalOperation == "Multiplication") //It can be other operation too. { long num01...

Hi, I´m currently wokring on an application, the purpose of the app is to display a message with a text, then you should be able to close the message down (like a notification). The message should be displayed after a couple of seconds. So what i need help with is to understand how to show the...

Please tell me. I can't solve the error in the JsonDocument.Parse method in any way. Translation of the error text: Error CS1061 / "object" does not contain a definition for "Parse" and it was not possible to find an extension method "Parse" that takes the type "object" as the first argument...

Hi, I'm very new to C#, but I haven't found any information on the internet on how to do this, so I looked to a forum. This is my script at the moment; using System.Collections; using System.Collections.Generic; using UnityEngine; public class useGlider : MonoBehaviour { private Rigidbody2D...

Hi, I have been trying for the past 6 days to get this BMI calculator working to my requirements but to no success. I am not even able to get a value out from it. I don't know where to start looking for the issue as I have been looking at this code for hours now and been looking at different...

rSimple script i don't get the problem

Is there any free GUI Framework with a slider similar to the one shown below?

I have to wrote a program solving these in an easiest way, not really know how without the mistakes, so thanks for any help. The 'file' contains whats under " John Medeic,MD 10|7|5|3|8|2|1|0|9|3|4|5|5|6|7|2|3 " Task. 1. Load and correctly interpret the data contained in the file. As a result...

I want to minimize my windows form when i clicked anywhere outside it.... But this code will just close the whole program, can anyone help? I want to hide the app to taskbar, and when i press it from taskbar it shows up again....... Here is the code: protected override void...

My WFA has overlayed other application since i added this code unto it. But i need this code to lock other users from repositioning the form. Please help ? protected override void WndProc(ref Message m) { const int WM_NCLBUTTONDOWN = 161; const int WM_SYSCOMMAND = 274; const int...

So I've this very simple program: int number; number = Convert.ToInt32(Console.ReadLine()); I want to be able to store a password in this variable. But when I try to add more than 10 digit numbers the program throws an Exception "Value is either too large or too small for an int32". How can I...

Hello. Basically i suck at code at times and i am very shit at troubleshooting. I get these errors in my MeshGenerator.cs: Assets\Scripts\OpenWorld\Procedural Landmass Generation\MeshGenerator.cs(52,32): error CS0103: The name 'heightCurve' does not exist in the current context...

I am updating my .NET Core web app from just MVC to a Service-Repository pattern. My question is, how do you implement DbSet<> when you add the Service and Repository layers? I originally added these to my ApplicationDbContext file under the Data folder. Is this still correct? Then would I just...

How do you use a ForEach loop on ViewModels on .NET MVC? I have 2 models: A Park Model: public class Park { [Key] public int ParkId { get; set; } public string ParkName { get; set; } public string ParkState { get; set; } public string ParkLatitude {...

Hi everyone, I have something that i simply need to get some help with. I am doing some exercises with async and await. I have this method that i want to make asynchronous. It simply supposed to take an array of strings, and then create a List of strings with the same content, but just with...