Rich, interactive C# code snippets
powered by Roslyn

var
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. items
List<int>? items = new List
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.<
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.int
int
Represents a 32-bit signed integer.>
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. { 1, 2, 3 };
var
int
Represents a 32-bit signed integer. count = items
List<int>? items.Count
int List<int>.Count
Gets the number of elements contained in the List`1.
Returns
The number of elements contained in the List`1.;
int count

var
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. items
List<int>? items = new List<
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.int
int
Represents a 32-bit signed integer.>
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. { 1, 2, 3 };
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.
var
int
Represents a 32-bit signed integer. total
int total = items
List<int>? items.Sum
int IEnumerable<int>.Sum()
Computes the sum of a sequence of Int32 values.
Parameters
source — A sequence of Int32 values to calculate the sum of.
Returns
The sum of the values in the sequence.
Exceptions
ArgumentNullException — source is .
OverflowException — The sum is larger than MaxValue.();

int
int
Represents a 32-bit signed integer. x
int x = "hello";

var
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. items
List<int>? items = new List
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.<
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.int
int
Represents a 32-bit signed integer.>
List<int>
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists. { 1, 2, 3 };
var
int
Represents a 32-bit signed integer. sum
int sum = items
List<int>? items.Sum
int IEnumerable<int>.Sum()
Computes the sum of a sequence of Int32 values.
Parameters
source — A sequence of Int32 values to calculate the sum of.
Returns
The sum of the values in the sequence.
Exceptions
ArgumentNullException — source is .
OverflowException — The sum is larger than MaxValue.();
Console
Console
Represents the standard input, output, and error streams for console applications. This class cannot be inherited..WriteLine
void Console.WriteLine(string? value)
Writes the specified string value, followed by the current line terminator, to the standard output stream.
Parameters
value — The value to write.
Exceptions
IOException — An I/O error occurred.($"Sum: {sum
int sum}");

var config = LoadConfig();
var conn = config.GetConnection();
var db = new DbContext(conn);

  public string
string
Represents text as a sequence of UTF-16 code units. FullName
string User.FullName
    => $"{First
string User.First} {Last
string User.Last}";

app
WebApplication? app.MapGet
RouteHandlerBuilder IEndpointRouteBuilder.MapGet(string pattern, Delegate handler)
Adds a RouteEndpoint to the IEndpointRouteBuilder that matches HTTP GET requests for the specified pattern.
Parameters
endpoints — The IEndpointRouteBuilder to add the route to.
pattern — The route pattern.
handler — The delegate executed when the endpoint is matched.
Returns
A RouteHandlerBuilder that can be used to further customize the endpoint.("/", () => "Hello");
app
WebApplication? app.Run
void WebApplication.Run(string? url = null)
Runs an application and blocks the calling thread until host shutdown.
Parameters
url — The URL to listen to if the server hasn't been configured directly.();

using Newtonsoft
Newtonsoft.Json
Json;
var
string
Represents text as a sequence of UTF-16 code units. json
string? json = JsonConvert
JsonConvert
Provides methods for converting between .NET types and JSON types..SerializeObject
string JsonConvert.SerializeObject(object? value)
Serializes the specified object to a JSON string.
Parameters
value — The object to serialize.
Returns
A JSON string representation of the object.(new { x
int <anonymous type: int x>.x = 1 });