I wanna define an object within some property, but I don't know how to do that. Like this:
var obj = ...;
obj["prop1"] = "Property 1";
obj["prop2"] = "Property 2";
And I can create a string to get one of them:
string temp = "prop1";
string prop1 = obj[temp];
Is it possible in C#?
What you want is a dictionary:
var obj = new Dictionary<string, string>();
obj.Add("prop1", "Property1");
Console.WriteLine(obj["prop1"]);
If the properties are well defined, I would recommend creating a class:
public class MyObject
{
public string Prop1;
public string Prop2;
}
Then you can do things like:
var obj = new MyObject
{
Prop1 = "Property 1",
Prop2 = "Property 2"
};
Console.WriteLine(obj.Prop1); //Will echo out 'Property 1'
Dictionary<string,string> obj = new Dictionary<string,string>();
obj.Add("prop1","Property 1");
obj.Add("prop2","Property 2");
string temp = obj["prop1"];
What you are doing is called an indexer. You can add an indexer to classes. It usually takes 1 or more arguments.
Calling an indexer:
To call an indexer, you use an instance of that class and add [] at the end of the name. Then, add the arguments into the []. Let's take string as an example. In the string class, there is an indexer that takes a argument of type int. It gets the character at that index of the string.
char theFirstChar = someString[0];
The indexer can also take multiple arguments:
int[,] matrix = new int[10, 10]; //Note: This is not an indexer
int someValue = matrix[9, 4]; //This is
Syntax:
You define an indexer like this: (I used the string example)
public char this[int i]
{
get
{
// code
}
set
{
// code
}
}
It's very much like a property.
Dictionary, see https://msdn.microsoft.com/en-us/library/xfhwa508%28v=vs.110%29.aspx at the bottom.
The closest you get in C# is Dictionary<TKey, TValue>
Source: Set array key as string not int?
It's called ExpandoObject in C#
see https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=c%23%20expandoobject
