Dynamic sorting using Linq Expression

You may wonder how to avoid hard coding the sorting order in the list. Here is one of the solution using Linq Expression:

class MyClass
{
   public int age { get; set; }
   public string name { get; set; }
}

MyClass[] arr =
{
   new MyClass() {age = 10, name ="abc" },
   new MyClass() {age = 20, name ="xyz" },
   new MyClass() {age = 30, name ="cde" }
};


// create the parameter
ParameterExpression param = Expression.Parameter(typeof(MyClass), "i");

// create the property to be used base on the 
// type (ie, MyClass) in the param variable. 
// you may change the "name" to any other field.
Expression prop = Expression.Property(param, "name");

// construct the lambda expression.
Expression> lambda 
   = Expression.Lambda>(prop, param);

// compile it to a function.
Func compile = lambda.Compile();

// now, we can use the function by passing it 
// to the OrderBy() proc.
var v3 = arr.OrderBy(compile);

string s;
foreach (var item in v3)
{
   s = item.name;
}