Dynamically Sorting with LINQ

Question

I have a collection of CLR objects. The class definition for the object has three properties: FirstName, LastName, BirthDate.

I have a string that reflects the name

Answer 1

You will need to use reflection to get the PropertyInfo, and then use that to build an expression tree. Something like this:

var entityType = typeof(TEntity);
var prop = entityType.GetProperty(sortProperty);
var param = Expression.Parameter(entityType, "x");
var access = Expression.Lambda(Expression.MakeMemberAccess(param, prop), param);

var ordered = (IOrderedQueryable<TEntity>) Queryable.OrderBy(
    myCollection, 
    (dynamic) access);

Answer 2

you can do this with Linq

var results = from c in myCollection
    orderby c.SortProperty
    select c;

Answer 3

You can copy paste the method I post in that answer, and change the signature/method names: How to make the position of a LINQ Query SELECT variable