Reading Properties of an Object with Expression Trees

Question

I want to create a Lambda Expression for every Property of an Object that reads the value dynamically.

What I have so far:

var properties = typeof (T         


        

Answer 1

Assuming that you're happy with a Func delegate (as per the comments above), you can use Expression.Convert to achieve that:

var properties = typeof(TType).GetProperties().Where(p => p.CanRead);

foreach (var propertyInfo in properties)
{
    MethodInfo getterMethodInfo = propertyInfo.GetGetMethod();
    ParameterExpression entity = Expression.Parameter(typeof(TType));
    MethodCallExpression getterCall = Expression.Call(entity, getterMethodInfo);

    UnaryExpression castToObject = Expression.Convert(getterCall, typeof(object));
    LambdaExpression lambda = Expression.Lambda(castToObject, entity);

    var functionThatGetsValue = (Func)lambda.Compile();
}