How can I initialize a C List in the same line I declare it IEnumerable string Collection Example

Question

I am writing my testcode and I do not want wo write   List lt string gt  nameslist   new List lt string gt     nameslist Add  one    nameslist Add  two    nameslist Add  three      I would love to write  List lt string gt  nameslist   new List lt string gt    one    two    three       However   one    two    three   is not an  IEnumerable string Collection   How can I initialise this in one line using the IEnumerable string Collection

User · Answer

Posting this answer for folks wanting to initialize list with POCOs and also coz this is the first thing that pops up in search but all answers only for list of type string.

You can do this two ways one is directly setting the property by setter assignment or much cleaner by creating a constructor that takes in params and sets the properties.

class MObject {        
        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> { new MObject{ PASCode = 111, Org="Oracle" }, new MObject{ PASCode = 444, Org="MS"} };

OR by parameterized constructor

class MObject {
        public MObject(int code, string org)
        {
            Code = code;
            Org = org;
        }

        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> {new MObject( 111, "Oracle" ), new MObject(222,"SAP")};

User · Answer

Remove the parentheses   List lt string gt  nameslist   new List lt string gt    one    two    three

User · Answer

It depends which version of C  you re using  from version 3 0 onwards you can use     List lt string gt  nameslist   new List lt string gt     one    two    three

User · Answer

This is one way  List lt int gt  list   new List lt int gt   1  2  3  4  5     This is another way  List lt int gt  list2   new List lt int gt      list2 Add 1    list2 Add 2    Same goes with strings  Eg  List lt string gt  list3   new List lt string gt     quot Hello quot    quot World quot

User · Answer

Change the code to  List lt string gt  nameslist   new List lt string gt    one    two    three      or  List lt string gt  nameslist   new List lt string gt  new     one    two    three

User · Answer

var list   new List lt string gt     One    Two    Three       Essentially the syntax is   new List lt Type gt    Instance1  Instance2  Instance3      Which is translated by the compiler as  List lt string gt  list   new List lt string gt     list Add  One    list Add  Two    list Add  Three

User · Answer

I think this will work for int  long and string values   List lt int gt  list   new List lt int gt  new int    2  3  7       var animals   new List lt string gt       bird    dog

User · Answer

Just lose the parenthesis   var nameslist   new List lt string gt     one    two    three

User · Answer

List lt string gt  nameslist   new List lt string gt    one    two    three

[c#] How can I initialize a C# List in the same line I declare it. (IEnumerable string Collection Example)

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