Questions tagged [.net]

.NET is a software framework supporting a multi-language paradigm and supporting language interoperability. .NET applications are executed in a virtual machine (CLR) which provides a few important services: security, memory management and exception handling.

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7
votes
2answers
934 views

ROT13 encoder/decoder

This is a simple utility, intended to sit on the desktop for when needed, that does the simple ROT13 encoding and decoding. I am used to coding in VBA, and I am interested in more .Net idiomatic ...
3
votes
1answer
46 views

Calculating all flight connections

I am working on an API to return all the possible flight route between point A and B. I have a set of data which includes the flight number, airline, departure airport, destination airport, ...
2
votes
1answer
41 views

Compare performance of Concurrent Dictionary with Dictionary+Locks

I wanted to measure the performance of Concurrent Dictionary vs Dictionary+Locks in a multithreaded environment. So I created my own SyncDict class of type...
5
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3answers
209 views

Issue a redirect, trying several string replacements for the domain

How could I improve this code? ...
2
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2answers
103 views

Using T type parameter to clone a collection

I want to clone a collection with the following method and I want to know if it can be optimized: ...
6
votes
4answers
1k views

Conversion helper with support for enumerations and Nullable<T>

I recently wrote this code as a more versatile stand-in for Convert.ChangeType. I have a nagging feeling that there's something I might be overlooking, or that ...
5
votes
2answers
97 views

Safe Dispose of Timer

I am currently refactoring a larger solution where the compiler gave multiple warnings about disposing the used System.Timers.Timer instances. The timers are ...
3
votes
1answer
153 views

Object pooling in WPF

In a WPF project I'm working on, often multiple objects reuse the same AnimationTimeline, to smooth that out I made an ...
1
vote
1answer
138 views

Do these BLL-DAL comply with the Dependency-Inversion Principle and is this valid Dependency Injection?

I am working on a very simplified proof of concept (POC). Separation of concerns should be achieved in this project, so that in the future we have flexibility in respect of what data source we use (...
11
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2answers
22k views

Mapping ExpandoObject to another object type

I am working on a helper method that maps properties from an ExpandoObject to a user supplied object and was wondering if the code could be cleaned up or made any ...
7
votes
3answers
523 views

Compiling all Exception messages into a string

Below is a recursive function I've written that's responsible for compiling a string consisting of a Exception's message, and also each of that ...
3
votes
1answer
8k views

How to match a fingerprint and retrieve data from the database? In simpler way

I am using Digital Persona 4500 Fingerprint Scanner for my project. I used U.are.U SDK 2.3 for Windows as the SDK and I am able to insert the serialized fingerprint minutiae data to database using ...
1
vote
2answers
97 views

Get value from a dictionary contained in a dictionary

I have an API that returns a dictionary of dictionaries. I currently have this code to access the value of the dictionary, but it looks like a code smell. Is there a better way to structure this? <...
0
votes
1answer
395 views

Convert IEnumerable to HTML table string

My code can generate HTML table strings well, but it depends on JSON.NET. I'm converting IEnumerable to an HTML table string using Json.NET but I think I shouldn't....
3
votes
0answers
40 views

msmq bulk send in c# [closed]

Please review the code below and provide constructive feedback to improve. Multiple threads call the SendMessageToMSMQ method to send messages to a msmq queue. ...
2
votes
1answer
60 views

Should I re-throw exceptions within a method, or is there a better way to handle it? [closed]

When handling errors in C#, is it acceptable/appropriate to re-throw exceptions that are caught in a try/catch? My scenario is that I am making an HTTP request and ...
11
votes
2answers
5k views

Using different instances of an object to lock threads

I'd like to use lock objects that are specific to the person I'm updating. In other words, if thread A is updating Person 1, thread B is blocked from also updating Person 1, but thread C is not ...
1
vote
2answers
98 views

Object-oriented implementation on Expense Tracking App [closed]

I am creating a Expense Tracking Application in C# and right now I am trying to build its building blocks in a console app. I Would like to know your feedback if it is in a Object Oriented Design/...
3
votes
1answer
52 views

/proc/net/tcp results filter and converter

Being unable to easily read the output of /proc/net/tcp I made a small C# console app that modifies the output to be in decimal notation instead of the standard hexadecimal, show the corresponding ...
5
votes
1answer
55 views

Rate limiting variable-duration operations over a time interval

I want a rate-limiter that permits, at most, N operations over T seconds. I found a sample implementation here but it makes an assumption that operations complete in a predictable, consistent amount ...
13
votes
2answers
32k views

Method that returns description attribute of enum value

I have the following method in .NET Core that returns the description attribute of an enum value. I think this code can be more elegant. I'd appreciate some ...
5
votes
1answer
125 views

In-Memory database supporting transactions

I referred to the post here but it does not address the question that I have with regards to my implementation. I have a C# implementation of an in-memory database that I came up with during a recent ...
8
votes
2answers
5k views

Basic, single-threaded implementation of SynchronizationContext

I am trying to write a SynchronizationContext in C# that represents a message queue, to be pumped from a main loop. Edit: I see that I have forgotten to say - I ...
0
votes
0answers
30 views

string.To2DCharArray extension method implementation

I would like to ask a code review for the class below. I am asking this because VS showed a quite low Maintainability Index of 54 and I am wondering if it is good code. I know I could have extracted ...
0
votes
1answer
43 views

proper structure of classes using interface classes [closed]

Given the following two interfaces what would the proper way to set up the two actual classes? ...
-4
votes
1answer
54 views

Generic Custom STACK Class for Hanoi Problem in C# [closed]

I have created a custom class (Generic) in C# for the Hanoi problem. and I am not sure I did the correct thing. ...
5
votes
3answers
2k views

Implementing a week schedule class in C#

Requirements A week schedule class .NET framework has DateTime struct, but I want a general week schedule class that involves day of week instead of date. For example, a shop has open hours from 9:...
14
votes
3answers
20k views

Building a Tree from a flat List<Nodes>

This is my incoming data: ...
9
votes
2answers
5k views

Math expression parser in C#

EDIT: Added refactored version 2.0 to the end! I have a parser that is supposed to take a string similar to a math expression and return a Tuple of: An array of strings where each string ...
22
votes
4answers
36k views

Type-safe Dictionary for various types

Assume the following situation: you have an object that can store any object based on a key (basically, IDictionary<string, object>). You want to store ...
5
votes
4answers
172 views

Take N elements from List of Lists

I've come with a solution super tricky for a simple requirement. I think I could solve the problem using LinQ, but I'm not seeing it so clearly at all. What's sure, I'm not comfortable with my code. ...
4
votes
1answer
5k views

Tracking which entity properties have changed

There are a number of topics pertaining to entity change tracking. All the ones I've seen involve either 1) notifying when a property has changed or 2) merely determining whether or not an entity is ...
10
votes
2answers
6k views

Simple IRC Bot in C#

This was a simple IRC bot I threw together a long time ago, found recently, and was curious as to if there were any kind of significant improvements that could be made. ...
1
vote
0answers
61 views

Way to hide logic behind class for better readability of method and refactor class to follow SRP [closed]

I have an algorithm to create a version for an entity and then I save that version against below 2 entity: 1) Variant 2) Category ...
3
votes
1answer
86 views

Assigning values to array elements based on a lookup table

I am writing a C# program wherein I need to populate an array based on a lookup table and set of string arrays with metadata. My lookup table looks like this (Table with key: transmitter, value: Array ...
-5
votes
1answer
213 views

Would you consider this little project to be worth showing to potential employers? [closed]

I am self thought c# kiddy and wonder if little projects like one here, are worth showing to potential employers when looking for junior developer position. This code has some issues that i do not ...
3
votes
0answers
55 views

Java code to convert BigDecimal to/from .NET decimal

Background In many languages we have built-in data types for representing decimal floating point numbers. In .NET that's decimal, and in Java we have ...
5
votes
2answers
106 views

Finding min value of an array using SIMD

I have the following code to find the minimum sbyte value in an array. It is using System.Runtime.Intrinsics to perform a SIMD ...
3
votes
1answer
4k views

Checking if a directory exists in FTP without relying on exception handling

I've written a method to check if a directory already exists on an FTP server. The only way I could see to make this work was to return a different result from the method if an exception is thrown - ...
2
votes
2answers
312 views

ADO.NET DAO Layer Design With Base DAO

I have a database with a number of stored procedures. These stored procedures provide the basic CRUD operations against the data. I'm trying to create a DAO layer with separate DAOs for each domain ...
1
vote
1answer
51 views

Simplified light Serialize/Deserialize to/from JSON for .NET

Just a very simplified and stright-forward way of serialize/deserialize to/from JSON using standard .NET 4+ libs. I was trying to avoid "complexity", so get rid of 3rd part libs and heavy-...
1
vote
1answer
46 views

Encrypts using AES with random initialization vector meant for data with limited visibility and then long rest

I've done some research, reviewed countless SO questions that appeared similar, leading me to endless rabbit holes. My solution is working, but I don't like it. I want to create a random IV for AES ...
1
vote
0answers
33 views

Querying connection string across solution [closed]

I have an app.config file that contains some connection strings, this is accessed on a project-by-project basis In my solution, I have the following projects: A B ...
1
vote
1answer
119 views

IEnumerable<T> async serialization

I am building some classes to serialize (in an async / await way) potentially pretty long ...
3
votes
1answer
42 views
6
votes
1answer
2k views

Create path to file under 64-bit %programfiles% from 32-bit process

I have a process that runs as 32-bits regardless of the architecture. In it, I want to be able to spawn a process from the 64-bit program files menu (e.g. ...
1
vote
0answers
78 views

An arithmetic operation app in C#

One of my friends was creating an app with following requirements and having been someone with slightly more coding experience, I wanted to help: Create a calculator that does one arithmetic ...
2
votes
2answers
88 views

Generic Singly-Linked List implementation

I'm looking for some feedback regarding my implementation of a generic singly-linked list in C#. I'm also looking for some tips on how to implement other techniques such as using ...
1
vote
2answers
110 views

C# Poker Game: Refactor method to evaluate poker hands

Preface: I've perused the other related questions before creating this one but I believe that those solutions weren't applicable to my situation. I'll concede that its possible that I may not have ...
1
vote
0answers
128 views

SemaphoreSlim extension method for safely handling cancellation and disposal

I have often found myself using a try {semaphore.Wait()} finally {semaphore.Release()} pattern when using semaphores, so decided I wanted to try and write an ...