How can i initialize all of the members of class at once in c#?

I have a 3 layer architecture application. the business logic has all the member fields like:

 class Demo
{
public Int64 Id{get; set;}
public string InformationLog{get; set;}
}

Currently i am initializing all of the members in the constructor of my class one by one. Is there any way to initialize all of the members at once? something like reflection?