Questions tagged [c#]
C# (pronounced "see sharp") is a high-level, statically typed, multi-paradigm programming language developed by Microsoft. C# code usually targets Microsoft's .NET ecosystem, which include .NET, .NET Framework, .NET MAUI, and Xamarin among others. Use this tag for questions about code written in C# or about C#'s formal specification.
1,619,532
questions
7550
votes
68
answers
1.3m
views
What is the difference between String and string in C#?
What are the differences between these two, and which one should I use?
string s = "Hello world!";
String s = "Hello world!";
4393
votes
36
answers
1.0m
views
How to enumerate an enum?
How can you enumerate an enum in C#?
E.g. the following code does not compile:
public enum Suit
{
Spades,
Hearts,
Clubs,
Diamonds
}
public void EnumerateAllSuitsDemoMethod()
{
...
- 253k
3909
votes
32
answers
2.1m
views
3447
votes
32
answers
1.3m
views
Case insensitive 'Contains(string)'
Is there a way to make the following return true?
string title = "ASTRINGTOTEST";
title.Contains("string");
There doesn't seem to be an overload that allows me to set the case ...
- 92.5k
3312
votes
20
answers
2.4m
views
How to iterate over a dictionary?
I've seen a few different ways to iterate over a dictionary in C#. Is there a standard way?
- 33.3k
2900
votes
13
answers
430k
views
What are the correct version numbers for C#?
What are the correct version numbers for C#? What came out when? Why can't I find any answers about C# 3.5?
This question is primarily to aid those who are searching for an answer using an incorrect ...
2646
votes
59
answers
1.0m
views
Deep cloning objects
I want to do something like:
MyObject myObj = GetMyObj(); // Create and fill a new object
MyObject newObj = myObj.Clone();
And then make changes to the new object that are not reflected in the ...
- 49.1k
2583
votes
29
answers
858k
views
Catch multiple exceptions at once?
It is discouraged to catch System.Exception errors. Instead, only the "known" exceptions should be caught.
This sometimes leads to unnecessary repetitive code, for example:
try
{
WebId = ...
- 180k
2432
votes
32
answers
3.1m
views
2413
votes
15
answers
283k
views
Should 'using' directives be inside or outside the namespace in C#?
I have been running StyleCop over some C# code, and it keeps reporting that my using directives should be inside the namespace.
Is there a technical reason for putting the using directives inside ...
- 38.1k
2367
votes
41
answers
1.2m
views
How do I get a consistent byte representation of strings in C# without manually specifying an encoding?
How do I convert a string to a byte[] in .NET (C#) without manually specifying a specific encoding?
I'm going to encrypt the string. I can encrypt it without converting, but I'd still like to know ...
- 58.9k
2365
votes
32
answers
2.4m
views
Get int value from enum in C#
I have a class called Questions (plural). In this class there is an enum called Question (singular) which looks like this.
public enum Question
{
Role = 2,
ProjectFunding = 3,
...
- 27.1k
2329
votes
23
answers
1.3m
views
What is the best way to give a C# auto-property an initial value?
How do you give a C# auto-property an initial value?
I either use the constructor, or revert to the old syntax.
Using the Constructor:
class Person
{
public Person()
{
Name = "...
- 33.3k
2254
votes
75
answers
835k
views
How do I calculate someone's age based on a DateTime type birthday?
Given a DateTime representing a person's birthday, how do I calculate their age in years?
2173
votes
48
answers
1.4m
views
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
How can I create an Excel spreadsheet with C# without requiring Excel to be installed on the machine that's running the code?