Convert string value to object property name ASP.net MVC4

Question

is there any possibility to make object properties using String values in C# ? like this :

object obj;
obj.makePropperty("username","user1");
obj.makePropperty("firstName","jnah");
obj.makePropperty("year",2014);

String getValue = obj.username;

IDictionary dict = new Dictionary { { "Foo", "Bar" } }; dynamic dobj = dict.toexpando(); i can't find toexpando definition ! — AHmedRef, Mar 26 '14 at 15:09
As far as I know there is no ToExpando method in the framework. This post talks about creating your own. http://stackoverflow.com/questions/6667273/problem-with-using-a-toexpando-method — Craig W., Mar 26 '14 at 15:59

score 2 · Answer 1 · answered Mar 26 '14 at 15:55

2

I think ExpandoObject was introduced in .NET 4.0. You could use that.

public dynamic MyObject { get; private set; }

MyObject = new ExpandoObject();

((IDictionary<string, object>)sourceObjectCustomFieldsExpando)Add(
    <PropertyName>, <Value> );

The only advantage of this over a dictionary that later on you can access the properties using dot notation.

((IDictionary<string, object>)MyObject)Add( "Foo", "bar" );

...

var value = MyObject.Foo;

answered Mar 26 '14 at 15:55

Craig W.

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I misunderstood that can you explain it to me ! – AHmedRef Mar 26 '14 at 16:04
You'll have to be precise in your question. I already explained it in the original post. If you have a specific question I'd be happy to try to answer it. – Craig W. Mar 26 '14 at 16:08
What you suggest dosen't work for me @Craig because as i said i wannna create object properties based on String text like this : object obj; obj.makePropperty("username","user1"); obj.makePropperty("firstName","jnah"); obj.makePropperty("year",2014); – AHmedRef Mar 26 '14 at 16:11

markpsmith · Answer 2 · 2014-03-26T16:05:11.703

1

Using anonymous types, you could create a new object like this:

var newObj = new { username = "user1", firstName = "jnah", year = "2014"};

Or if you had a class to represent your object looking like this:

public string username {get; set;}
public string firstName {get; set;}
public string year{get; set;}

var newObj = new myObj{ username = "user1", firstName = "jnah", year = "2014"};

Update: You could also use a list of Dictionary or KeyValuePairs:

var objList= new List<KeyValuePair<string, string>>();

list.Add(new KeyValuePair<string, int>("username ", "user1"));
list.Add(new KeyValuePair<string, int>("firstName", "jnah"));
list.Add(new KeyValuePair<string, int>("year", "2014"));

edited Mar 26 '14 at 16:05

answered Mar 26 '14 at 15:09

markpsmith

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the issue is that i wanna create an object properties dynamically ! – AHmedRef Mar 26 '14 at 15:10
sorry, I misunderstood. In that case as suggested by dkozl, use a [dictionary](http://stackoverflow.com/questions/6044482/setting-anonymous-type-property-name) – markpsmith Mar 26 '14 at 15:18
Could explain to me how to use iot please !! – AHmedRef Mar 26 '14 at 15:24

Convert string value to object property name ASP.net MVC4

2 Answers2