How RaisePropertyChanged<T> finds out the property name?
.net, c#-4.0, lambda
Solution
An `Expression<TDelegate>` represents the abstract syntax tree of the lambda expression. So you just have to analyze this syntax tree to find out the property name:
protected void RaisePropertyChanged<T>(Expression<Func<T>> propertyExpression)
{
var memberExpr = propertyExpression.Body as MemberExpression;
if (memberExpr == null)
throw new ArgumentException("propertyExpression should represent access to a member");
string memberName = memberExpr.Member.Name;
RaisePropertyChanged(memberName);
}
Problem
There is one overload of this method in `NotificationObject` :- ``` protected void RaisePropertyChanged<T>(Expression<Func<T>> propertyExpression); ``` We write in the following way in the setter of property: ``` RaisePropertyChanged(() => PropertyVariable); ``` How does it works ? How it finds the property name out of this Lambda expression ?