csharp

Hello all, I have a little understanding problem with my small C# projects and .Net. If I created a project and set as target .Net 4.8, then on a target machine to which I copy all the files \bin\debug\* must be installed on the .Net 4.8 version? The same goes for the DLL references for...

I work on csharp i get error object reference not set to an instance of an object code give me error var Data = result.items.Select(e => new { PartID = e.create._id, IsUpdated = e.create.error != null && e.create.error.reason !=null && !e.create.error.reason.Contains("document already exists")...

I have a fairly simple WPF app which primarily has 2 datagrid's in two different tabitem's. The datagrid in 1st tabitem has the itemssource PendingBills which is an ICollectionView and it shows some filtered data as per some basic logic The datagrid in 2nd tabitem has the itemssource AllBills...

Hi everyone, I'm making a window, the first image you see is the visual studio editor, the second the program started, but why the heck it destroys the whole layout .. I can't understand if it's a problem with the size of the objects , many are not even displayed 😭 <Window...

I want to Convert a Sketch to a Text

(I USE .NET 5.0) So, i created a post on StackOverFlow but they closed my question due to not have enough braincells. You can see the comment you can have a question already awnsered here: How work and be able to run a function in real time? So i start project that's need real time "update"...

Hello everyone. I will be grateful for your kind help on this one. I am trying to transfer a specific listview column items to a listbox in C#. Heres my effort below. Unfortunately my code rather iterates though only the entry of the specified column and splits it as letters into the listbox...

Dears, Is there any way to put a large file into a memory stream with file with size > 1 GB. knowing thar Read(byte[] buffer , int offset, int count) does not work in large files.

This is just the UI. The logic is fine. static void Main(string[] args) { Console.WriteLine("This is a passwordgenerator."); Console.WriteLine("Enter the length of your password (12 signs recommended): "); int length; try {...

Hello CSharp | C# Developer Community [^] found a runtime message issue Operator '<' cannot be applied to operands of type 'int' and 'object[]' if(MyVariable.GetType()==typeof(System.Boolean)&& MyVariable==false) return; line 1 had to be added and there where no where to be found the...

I've been researching how I could open and display a PDF in WPF, and once it's open, draw on top of it. I have 2 panels, 1 that simulates the Treeview of the pdfs that I am opening and the other panel is where it is displayed, something like the one in the image, obviously it does not have...

This is a trivial problem but I cannot get a solution. I am trying to make my code recognize strings like the following: "PTV1_3000", "ITV3_4000" The sub-string should contain a root-like "PTV", "ITV", "CTV" followed by one or more integer numbers followed by "_". I tried different flavors of...

Basically, I need a plotting library with support of exporting as image that does not utilize System.Drawing.* namespaces, as they are going to be marked as "Windows-only" in .NET 7 (see the link Breaking change: System.Drawing.Common only supported on Windows - .NET). I have already checked...

I am programming a C# blazor game, and there is a method that sets a property in a class. If the button, which calls the method was clicked, on the next page the property will be printed. Here is a simplified example: class A{ public string test {get; set;} } class B{ public void...

Sir, I save my password in database is SAAmi@123 but if even enter in small letters saami@123 means its also logging in but it was not correct. please correct in my code pls if (textBox9.Text != "" && textBox10.Text != "") { string connectionString; MySqlConnection cnn; connectionString =...

I would appreciate some help in implementing the following with WPF. I need to have a ListBox displaying a list of strings but some may be empty strings. Each ListBox item can be edited, discarded, or accepted. Therefore, besides the editable ListBox I need some other type of WPF control that...

I am actually programming a tic tac toe game with the blazor framework and I have already a function to lock the button if it was clicked. It looks like this: public class ElementOfMatchField { public int Row { get; set; } public int Column { get; set; } public...

I'm trying to save inbound Outlook mail data to sql server however I'm getting in error in System.Runtime.InteropServices.COMException: 'The attempted operation failed. An object could not be found.' What did I missed Note: RetrieveMail is exist in mailbox using System; using...

I have a Blazor Server Side Web Application that uses the default authorization and authentication. app.UseAuthentication() app.UseAuthorization() I can protect my pages with @attribute [Authorize] I have a login page with anonymous access to authenticate. This works fine. Now I need a...

Dear C# Experts, First off, please forgive me to ask basic, maybe silly questions. I am a C# beginner. I developed a C# script (attached) that gets access to a Postgres database, the Velocity database, ConsoleX (available from GitHub), and some fuzzy string search algorithms. Therefore my code...