如何转换Func <T,object> 到PropertyInfo

Question

I need property name to be extracted form Func please help me if its possible. Thanks.

public void Converter<T>(Func<T,Ojbect> F)
{

}
public class Tester
{
 void main()
  {
   String Name = Converter<User>(m=>m.Id);
  //Name should be equal to "Id"
  }
}

Answer 1

What you need is:

public static string GetPropertyName<T>(Expression<Func<T>> property)
{
    var memberExpress = property.Body as MemberExpression;    
    return memberExpress.Member.Name;
}

Which you can then call using:

var user = new User();
string name = GetPropertyName(() => user.Name);

Or even:

public static string GetPropertyName<T, TValue>(Expression<Func<T, TValue>> property)
{
    var memberExpress = property.Body as MemberExpression;    
    return memberExpress.Member.Name;
}

Which you can call using:

string name = GetPropertyName<User, string>(u => u.Id);