Breaking News: Grepper is joining You.com. Read the official announcement!

create new object key-value c#

Vast Vendace answered on January 20, 2023 Popularity 3/10 Helpfulness 10/10

answer create new object key-value c#

create new object key-value c#

Comment

var cities = new Dictionary<string, string>(){
	{"UK", "London, Manchester, Birmingham"},
	{"USA", "Chicago, New York, Washington"},
	{"India", "Mumbai, New Delhi, Pune"}
};

Console.WriteLine(cities["UK"]); //prints value of UK key
Console.WriteLine(cities["USA"]);//prints value of USA key
//Console.WriteLine(cities["France"]); // run-time exception: Key does not exist

//use ContainsKey() to check for an unknown key
if(cities.ContainsKey("France")){  
    Console.WriteLine(cities["France"]);
}

//use TryGetValue() to get a value of unknown key
string result;

if(cities.TryGetValue("France", out result))
{
    Console.WriteLine(result);
}

//use ElementAt() to retrieve key-value pair using index
for (int i = 0; i < cities.Count; i++)
{
    Console.WriteLine("Key: {0}, Value: {1}", 
                                            cities.ElementAt(i).Key, 
                                            cities.ElementAt(i).Value);
}

Popularity 3/10 Helpfulness 10/10 Language csharp

Source: Grepper

Tags: c# key-value new-object

Link to this answer
Share Copy Link

Contributed on Jan 20 2023

Vast Vendace

0 Answers Avg Quality 2/10

create new object key-value c#

Contents

More Related Answers

create new object key-value c#

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.