How to initialize a static Dictionary in c#?

How to initialize a static Dictionary in c#?

If you want to declare the dictionary once and never change it then declare it as readonly: private static readonly Dictionarystring> ErrorCodes = new Dictionary<string, string> { { “1”, “Error One” }, { “2”, “Error Two” } };

What is static Dictionary in c#?

A static Dictionary can store global data. It lets you quickly look up strings (or other values). It is shared among many instances. Static info. A static Dictionary, existing only once in memory, is efficient.

How do I fill a dictionary in C#?

“populate a dictionary c#” Code Answer

  1. // To initialize a dictionary, see below:
  2. IDictionary dict = new Dictionary();
  3. // Make sure to give it the right type of key and value.
  4. // To add values use ‘Add()’
  5. dict. Add(1,”One”);
  6. dict. Add(2,”Two”);
  7. dict. Add(3,”Three”);

How do you initialize a dictionary?

Dictionaries are also initialized using the curly braces {} , and the key-value pairs are declared using the key:value syntax. You can also initialize an empty dictionary by using the in-built dict function. Empty dictionaries can also be initialized by simply using empty curly braces.

What is the difference between Hashtable and dictionary in C# net?

In Hashtable, you can store key/value pairs of the same type or of the different type. In Dictionary, you can store key/value pairs of same type. In Hashtable, there is no need to specify the type of the key and value. The data retrieval is faster than Hashtable due to no boxing/ unboxing.

Is readonly dictionary thread safe?

ReadOnlyDictionary is just a wrapper around any other dictionary. As such, it’s only as thread-safe as the underlying dictionary.

What is the difference between Dictionary and Hashtable in C#?

How do you initialize a dictionary by default value?

If you want to initialize all keys in the dictionary with some default value, you can use the fromkeys() function. If no default value is specified, the dictionary is initialized with all values as None .

How do you initialize a dictionary key?

Use dict. fromkeys() to initialize a dictionary with keys

  1. key_list = [“a”, “b”]
  2. a_dictionary = dict. fromkeys(key_list) Initialize dictionary from `key_list`
  3. print(a_dictionary)

How to initialize a static Dictionary in c#? If you want to declare the dictionary once and never change it then declare it as readonly: private static readonly Dictionarystring> ErrorCodes = new Dictionary<string, string> { { “1”, “Error One” }, { “2”, “Error Two” } }; What is static Dictionary in c#? A static Dictionary…