C# is a multi-paradigm, managed, garbage-collected, object-oriented programming language created by Microsoft in conjunction with the .NET platform.
-3
votes
0answers
16 views
Clarification on the logic for saving xml file and getting ids [on hold]
I have List of List<Student>, that is: List<List<Student>>
I have to ...
9
votes
2answers
124 views
Async wrapper around public API
Tear it apart. I'm mostly concerned around the appropriate use of ConfigureAwait(false), and possible poor handling and duplication of the ...
3
votes
3answers
64 views
Mapping uint to value within set [min,max]
I have a method that transforms any input uint into a [min,max] set. I am looking if I can improve the function, specifically to get rid of the ...
2
votes
0answers
22 views
Binding data to a ComboBox and then showing ValueMember in another TextBox
I have a comboBox and a TextBox in the View and when the view is loaded, the ...
3
votes
2answers
163 views
How can I better my URL checker program?
I made a LinkChecker program which checks URLs from a text file and outputs status into another file like this:
...
0
votes
0answers
9 views
Need to use floats for performance yet want double-precision calculations [migrated]
MonoGame is an open-source version of Microsoft's XNA. It's a framework for building cross-platform games.
It has a number of mathematical types such as Vector and Quaternion.
I am a bit baffled by ...
2
votes
2answers
13 views
Resize image with good quality and less weight
I want to resize an image with good quality, and the most important thing is having less weight for an image so that webpages will load it faster.
I am using the below method for this. Please check ...
2
votes
1answer
94 views
Faster file lookup
I'm polling an ashx handler to check if a specific file is present and return true or false depending on it.
...
4
votes
1answer
29 views
3
votes
2answers
47 views
performance on this substring search
I have the code below that gets hit several hundred times per second. I'm wondering what I can do to improve performance. It seems that there should be some way to build up a substring index. Is there ...
3
votes
0answers
27 views
Binding a DataGridView to a List
I'm new to Databinding in MVP and I want to bind my DataGridView to a object list. This grid may be populated in two ways.
There are TextBoxes in the form and users can enter text, and when they ...
3
votes
1answer
42 views
Entity Framework - updating two different arrays of child associations
Exercises have Muscles and Tools. When someone adds or updates an ...
5
votes
2answers
71 views
Compare string with wildcard string
I have the following function to compare a string with a wildcard string (containing ? and *), as C# doesn't seem to have a builtin function to do it.
...
9
votes
1answer
234 views
Update first and last item in List<T>
I am trying to do the following. I have a list of Custom objects:
...
13
votes
5answers
504 views
Parsing CSV to specific format
I've written this code to read CSV files written to a specific format. I would like to gather some feedback on where it could be improved. I'm trying to get into the test driven development ideology ...
2
votes
3answers
37 views
Is Dictionary the right data structure for this?
I have an object which represents historical price of certain financial instrument as below:
...
9
votes
6answers
1k views
Divide two numbers, then apply a custom rounding rule
If the fractional part of the number is greater than 0.6, round up; if less, round down.
I need feedback about my code.
...
2
votes
1answer
33 views
Cross Thread Access to Object in ViewModel
This is a fairly straight forward question. I have a C# WPF MVVM application that call a C++ DLL to do some compilation/crunching. To update the UI C# application for progress updates I am using ...
3
votes
1answer
46 views
When should I actually derive from my interface?
Context:
I am working on an XNA project, and since procedural generation is likely to be used, I wanted to eventually create a helper class to work with data to facilitate that.
Design Goal:
...
20
votes
3answers
2k views
What are the best practices with multithreading in C#?
For a while I have been interested in seeing if some tasks work well when split across multiple threads.
On the one project I have been busy with I have been creating a lot of small utility apps, to ...
2
votes
0answers
12 views
What are the best practices with multithreading in C# [duplicate]
For a while I have been interested in seeing if some tasks work well when split across multiple threads.
On the one project I have been busy with I have been creating a lot of small utility apps, to ...
2
votes
0answers
29 views
EF6-Lambda Expressions deep big-tree query
I am looking to improve the following query.
We are using EF6 (CodeFirst) and C# Lambda Expressions, and Repository/Unit of Work patterns. Also, we needed to restrict the query in a way that we ...
3
votes
4answers
211 views
2
votes
4answers
320 views
Silent Try_catch in high load socket server or not?
I'm working on a socket application that will listen to incoming messages from about 400 devices. They all send a message at least once per minute. Now I have a working program and it has been running ...
3
votes
1answer
58 views
Should I null coalesce EventArgs?
When I implement events, it usually looks something like this:
...
0
votes
1answer
51 views
Drawing multiple Images
Im trying to draw a lot of fields image for my world generation, all is perfect 64 fps, but if i began to draw all the time the grass it became laggy, like 59 fps (something that musn't happen! :( ), ...
5
votes
1answer
60 views
Message Based Communication Design
I'm trying to design an API.NET for some communication purposes with Testing Equipment and I cannot figure out a proper way for designing the architecture.
Basically, we have different (physical) ...
5
votes
1answer
38 views
Verifying the type of an AggregateException's inner exception in a unit test
I've got the following code inside an integration test.
...
4
votes
1answer
55 views
Unit of Work / Repository nHibernate
I have a Unit of Work / Repository pattern in place to abstract away some nHibernate. Most examples I've seen though use the pattern a little differently.
In ...
2
votes
1answer
37 views
Parsing ODataQueryOptions<T> to Expression<Func<T, bool>>
I am following up on this answer for a scenario that I am currently working on. Like the OP, I am too concerned about the longevity of the code.
...
4
votes
1answer
62 views
Method to return a string of max length (in bytes vs. characters)
In my (c#) code, I need to generate a string (from a longer string) which when UTF-8 encoded, is no longer than a given max length (in bytes).
...
0
votes
0answers
37 views
Advanced programming Advice to separate code for classes? [closed]
Quick question, Now further in my career I have found that I am still sticking with some of my bad coding techniques, such as Coding directly into the Event (such as the _ButtonClick event), instead ...
6
votes
1answer
98 views
Abstract Factory Pattern C# Example
I am working through more tutorials on Design Patterns and came across the Abstract Factory Pattern. I extended it out a bit (the example that is) and want your opinion:
...
3
votes
0answers
57 views
PreWarmCache for MVC Application with Stopwatch Infinite Loop
I used the information from the article "Auto-Start ASP.NET Applications (VS 2010 and .NET 4.0 Series)" to create a background task that runs on an infinite loop. Ultimately, this program is going to ...
9
votes
1answer
363 views
Chunk Generation Performance in C#
I'm working on a game in C#, this game generate new chunk (infinite) when you move around. If I have > 1000 chunks in my list then it become laggy even though I only load the necessary chunks on my ...
6
votes
4answers
1k views
Regex validation for Email Address
I need to validate whether my regex is correct for below scenario. Suggestion's if the regex is correct:
Wiki Link Local_part
The local-part of the email address may use any of these ASCII ...
-1
votes
0answers
12 views
10
votes
3answers
689 views
Does everyone still love Fibonacci?
I'm following up on this question. I made a few decisions about my model and implemented recommendations accordingly.
TL;DR the link
Uses a loop algorithm to return a Fibonacci number \$Fn\$ of ...
4
votes
3answers
126 views
5
votes
1answer
37 views
Negative Lookbehind Regex
I have the following code which attempts to match all strings like "*SOMESTRING" (which can include numeric values), but not "*SOMESTRING*". For this I am using a negative lookahead as follows;...
3
votes
2answers
51 views
Find all file occurences of a search term on drive
I have written a small application that lets the user search drives for their given input string. I am only returning the full name of files. What I have now is the following method to retrieve those ...
20
votes
4answers
2k views
Everyone loves Fibonacci
I was bored and burnt out on more serious projects.... until I saw this Computerphile video on YouTube. Now I'm inspired again. Now I feel like spending some time implementing that recursive algorithm ...
2
votes
1answer
56 views
Cleaning User Input
I am not sure if I am approaching this task the correct way. I have a view model with multiple string properties. I pass the model through an interface to a service class that contains a void to ...
3
votes
3answers
63 views
Validating a string under few conditions
Following code validates NIC number of a person (National Identity Card, no like SSN)
Requirements are...
Length should be 10 digits or characters
All should be digits except the last one
Last one ...
2
votes
1answer
40 views
Using a single validation handler for all controllers in a form
In input validation I'm using this validation method in my all Forms. Here I have a single handler for all TextBoxes in my Form and if I have other controllers like ...
5
votes
2answers
58 views
Convert string to multiline text
I made this method that takes any string and transforms it into a multiline text l; each line having the max (character) length specified by the rowLength ...
10
votes
1answer
129 views
Tweets per second, using linked list
This is a TalentBuddy Challenge
Your task is to
write a function that prints to the standard output (stdout) the highest number of tweets recorded between each second in the array and the past ...
9
votes
2answers
75 views
Extending database factory class to use auditing class
I'm the the process of adding change auditing to my existing DB class which encapsulates database calls.
Previously I would just pass in a ...
3
votes
4answers
144 views
Input validation for text boxes in a Form
In a Win Form I'm doing initial validation in the Form. So before saving data, I want to validate whether all the required fields are filled (Text Boxes) by the user. There are about 18 such Text ...
2
votes
1answer
52 views
