Is there a way to sort EntityQuery using property name strings?

Is there a way to sort EntityQuery using property name strings?

Seriously, I have an EntityQuery and the name of a property. I need to call OrderBy with only the name of a property. How can I do this? Reflection gives me the following exception:

System.NotSupportedException: Method 'GetValue' on type 'System.Reflection.PropertyInfo' is not accessible. Only开发者_运维知识库 methods on primitive types, System.Math and System.Convert are supported in queries.

You have to build an expression tree like this.

Type entityType = typeof(T);
var px = Expression.Parameter(entityType,"x");
var ex = Expression.Property(px, propertyName);

var lx = Expression.Lambda<Expression<Func<T>>(ex,px);

var q //.. Entity Query

q = q.OrderBy(lx);

You should replace T with your type, this is not generics example.