Get Property Info from an object without giving the property name as string

Question

For some reasons, I need to create a Dictionary of PropertyInfo instances corresponding to some class' properties (let's call it EntityClass).

Ok, I could use typeof(EntityClass).GetProperties().

But I also need to determine a value for some specific properties (known at compile time). Normally I could do one of the following:

EntityInstance.PropertyX = Value;
typeof(EntityClass).GetProperty("PropertyX").SetValue(EntityInstance, Value, null);

In order to fill up my dictionary, I need to use PropertyInfo instances instead of just setting the values normally. But I don't feel confortable getting properties by their string names. If some EntityClass changes, it would bring many exceptions instead of compile errors. So, what I ask is:

How to get a known property's PropertyInfo without passing the string name? I would love if there's something just like delegates:

SomeDelegateType MyDelegate = EntityInstance.MethodX;

Ideally:

SomePropertyDelegate MyPropertyDelegate = EntityInstance.PropertyX;

Answer 1

Something like this?

string s = GetPropertyName<User>( x=> x.Name );

public string GetPropertyName<T>(Expression<Func<T, object>> lambda)
{
    var member = lambda.Body as MemberExpression;
    var prop = member.Member as PropertyInfo;
    return prop.Name;
}

or

public PropertyInfo GetPropertyInfo<T>(Expression<Func<T, object>> lambda)
{
    var member = lambda.Body as MemberExpression;
    return member.Member as PropertyInfo;
}

---

public class User
{
    public string Name { set; get; }
}