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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2answers
5k 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 - ...
4
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2answers
180 views

DropDown tree with search

I fetch a bunch of categories for a DropDown tree, and have to implement search in this dropdown. If there is a match in one of the elements, it should also get all ...
6
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1answer
6k 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 ...
2
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1answer
44 views

Posting images from request to Azure blob

I have base Controller for Attachments, here is code of it In this controller, I pass data from the request and return URL of the posted object. ...
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0answers
67 views

What pattern can I use to write CRUD functionality? [closed]

I am writing a console application. CRUD functionality.I would like to try to apply the pattern. Is it possible to apply a "state" pattern? In the AddCustomer () ...
17
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3answers
9k views

Change desktop background

I've created a simple program that downloads an image (different image every day), then sets it as my desktop background. It is a console application, and closes immediately after downloading the ...
5
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0answers
729 views

Custom TaskScheduler: Limited concurrency level [closed]

I'm interested in some feedback for a custom TaskScheduler implementation I wrote today for use on a game server - I wanted to be able to have a single-threaded ...
7
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6answers
10k views

Code to initialize a .NET object from a CSV file

I am initializing the following object from a CSV file: ...
5
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5answers
829 views

Enum with a lot of items and a long case statement to convert from string

Recently I wrote this class and it has a enum of all the interaction types a game item can have. What I want to know is, it seems a bit of a stretch to have a huge enum then that long switch, is there ...
8
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2answers
158 views

Non-Entity framework database interaction model

A C# WPF user interface has been developed for the Book Inventory MySQL database previously shown in this question. Since the database had already been developed this was a database first ...
3
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1answer
117 views

Capsulation solution for byte arrays

In a part of the project, I had to implement a solution for encapsulation of byte arrays. We do use ssh and secure ports for socket connection but I was in need of an extra layer of protection against ...
5
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3answers
220 views

Issue a redirect, trying several string replacements for the domain

How could I improve this code? ...
3
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3answers
182 views

Singly-linked list queue

I recently learned the core .NET Queue type uses arrays internally, and that this is actually much more efficient. I've had a go at writing a singly-linked list ...
8
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2answers
1k 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
673 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...
2
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2answers
104 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
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4answers
2k 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 ...
7
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2answers
2k 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
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0answers
206 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
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1answer
276 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
27k 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
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3answers
564 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
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1answer
10k 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
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2answers
698 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? <...
3
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0answers
98 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. ...
11
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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
117 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/...
5
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1answer
114 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 ...
15
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1answer
48k 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
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1answer
402 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 ...
10
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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 ...
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0answers
37 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
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1answer
46 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
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1answer
60 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. ...
17
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3answers
32k views

Building a Tree from a flat List<Nodes>

This is my incoming data: ...
10
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2answers
8k 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
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0answers
62 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
94 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 ...
-4
votes
1answer
392 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
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0answers
195 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
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2answers
388 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 ...
2
votes
2answers
577 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
154 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
178 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
45 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 ...
2
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1answer
339 views

IEnumerable<T> async serialization

I am building some classes to serialize (in an async / await way) potentially pretty long ...
3
votes
1answer
44 views
7
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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
83 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
157 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 ...

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