CODEWITHSUNDEEP
c#arraysdictionary
user6024347
user6024347

Reputation:

how to assign an whole array to dictionary in c#

How to assign an array to dictionary in c#

below code is not working

ArrayList conf_list = new ArrayList();
var variations = new Dictionary<string, List<string>>();

conf_list.Add ("hi");
conf_list.Add ("bye");
conf_list.Add ("ss");
conf_list.Add ("fefe");
conf_list.Add ("gg");
conf_list.Add ("qwq");
conf_list.Add ("trt");

variations["available"] = conf_list;

Error:

Severity    Code    Description Project File    Line    Suppression State
Error   CS0029  Cannot implicitly convert type 'System.Collections.ArrayList' to 'System.Collections.Generic.List<string>'  ConsoleApplication1 c:\users\administrator\documents\visual studio 2015\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs 27  Active

How to push hole array at one time to dictionay??

Note: i dont want to use this method

variations["available"] = new List<string> { "hi","bye" };

Upvotes: 0

Views: 109

Answers (3)

Darshan Faldu
Darshan Faldu

Reputation: 1603

try this one

List<string> lstString = new List<string>();
var variations = new Dictionary<string, List<string>>();
variations.Add("available", lstString);

if you want to add ArrayList into Dictionary so you need to create Dictionary some thing like ...

var variations = new Dictionary<string, ArrayList>();

Upvotes: 0

Ren&#233; Vogt
Ren&#233; Vogt

Reputation: 43876

You need to convert that ArrayList into a List<string>. This can be done like that:

variations["available"] = conf_list.OfType<string>().ToList();

The reason for your error is that conf_list is of type ArrayList which is not implicitly convertible to List<string>.

By using OfType<string>() you get an enumeration of strings and with ToList() you turn this enumeration into an List<string> which then can be added to your dictionary.

Alternatively you can declare your conf_list as List<string> right from the start.

List<string> conf_list = new List<string>();
conf_list.Add ("hi");
//...

Upvotes: 1

Roy Dictus
Roy Dictus

Reputation: 33139

Use

var variations = new Dictionary<string, ArrayList>();

or

List<string> conf_list = new List<string>();

The two types can not be used interchangeably.

Upvotes: 1

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