I am trying to do something like:
Object [] x = new Object[2];
x[0]=new Object(){firstName="john";lastName="walter"};
x[1]=new Object(){brand="BMW"};
I want to know if there is a way to achieve that inline declaration in C#
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3 Answers
yes, there is:
object[] x = new object[2];
x[0] = new { firstName = "john", lastName = "walter" };
x[1] = new { brand = "BMW" };
you were practically there, just the declaration of the anonymous types was a little off.
7 Comments
dlock
@hunter, BUT, how can I access the object variables later without the object being a "var". I can't do x[1].brand.
BrokenGlass
anonymous types are...anonymous - you can only use them with var, or in C# 4 with
dynamic types, otherwise you will have to create a class instance, which works the same way, just add the class name after new and have the class expose the appropriate public propertiesdlock
edit: I forgot to mention I am trying to do that in a Dictionary<string,Object>
Amanda Mitchell
If you're using C# 4.0, you might be able to use the "dynamic" keyword to accomplish what you want. Otherwise, you'll probably need to use a Dictionary<string, string> instead. Historically, C# has not been very good with the sort of dynamic typing you're attempting.
hunter
@deadlock unless your data is completely random I would suggest creating some classes. Even using
vars within the context of your object[] won't be reference-able from outside of this scope. |
You can also do this:
var x = new object[] {
new { firstName = "john", lastName = "walter" },
new { brand = "BMW" }
};
And if they are the same anonymous type (firstName and lastName), you won't need to cast as object.
var y = new [] {
new { firstName = "john", lastName = "walter" },
new { firstName = "jill", lastName = "white" }
};
1 Comment
iGanja
Clearly the more better modern answer.
You can also declare 'x' with the keyword var:
var x = new
{
driver = new
{
firstName = "john",
lastName = "walter"
},
car = new
{
brand = "BMW"
}
};
This will allow you to declare your x object inline, but you will have to name your 2 anonymous objects, in order to access them. You can have an array of "x" :
x.driver.firstName // "john"
x.car.brand // "BMW"
var y = new[] { x, x, x, x };
y[1].car.brand; // "BMW"
