Get Value from key using linq

Question

我有来自字符串键的字典，我想使用 Linq 获取相应键的值

Answer 1

Why do you want to get a value from a Dictionary using LINQ? You can just get the value using:

int value = dictionary[key];

You could use Single , but it's totally pointless and more code:

var keyValuePair = dictionary.Single(x => x.Key == key);
int value = keyValuePair.Value;

Answer 2

Why use Linq for something that is built in?

var val = myDict[key];

Use Linq where it makes sense (querying collections), not for something that is already well handled by the Dictionary classes.

Answer 3

returns the string value in this particular instance.

    Disctionary<int, string> CustomValues = new Dictionary<int, string>();
    CustomValues[int]; //CustomValues[key];

Answer 4

To Get the Value from the Dictionary Key

Dictionary<int,string>dict=new Dictionary<int,string>();
dict.Add(1,"Maha");
dict.Add(2,"Malathi");
dict.Add(3,"Mithra");
dict.Add(4,"Saravana");

var val=dict.Where(x=>x.Key==key).Select(x=>x.Value);//get the value from dictionary where key=3
(or)
var val=dict[Key];//get the value for Dictionary key 3.

Output: Mithra