I'd like to learn CSLA.NET quickly. What advice do you have?
Answer
I would suggest downloading the CSLA source code and the samples (especially the ProjectTracker sample) and take a look at the code. The best way for me to learn something fast is to build something.
To start writing objects, start by creating the dataportal infrastructure.
e.g. Here is a base CSLA object:
[Serializable()]
public class Widget : Csla.BusinessBase<Widget>
{
private Widget()
{
}
}
The next step to creating the dataportal is to determine what a fetch may look like on your object. E.g., are you going to want to get an object based on their id, their name, their category, or some other property. Here is an example of the same object with the fetch factory method implemented:
[Serializable()]
public class Widget : Csla.BusinessBase<Widget>
{
private Widget()
{
}
public static Widget Fetch(int id)
{
return Csla.DataPortal.Fetch<Widget>(new Csla.SingleCriteria<Widget, int>(id));
}
}
The next step is to create the dataportal method that the CSLA data portal will create.
[Serializable()]
public class Widget : Csla.BusinessBase<Widget>
{
private Widget()
{
}
public static Widget Fetch(int id)
{
return Csla.DataPortal.Fetch<Widget>(new Csla.SingleCriteria<Widget, int>(id));
}
private void DataPortal_Fetch(Csla.SingleCriteria<Widget, int> criteria)
{
// Connect to database (or use ORM) and populate the object here based on the criteria.Value which is the id value
}
}
After this is completed, the next step would be to define your business object with properties, etc. This is where you will want to look at the samples provided and see how parent/child relationships are defined, etc.
Hope this helps you get started.
You can download the code and the samples at http://lhotka.net/cslanet/Download.aspx