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NET that needs to perform these tasks, you might find it s not as easy, because you ll need to understand the membership table structure In this case, you may find that it s easier to manage users with straight SQL statements that work with your own user table If you decide not to use the membership data store, it s up to you to write ADONET code to retrieve user records and check user credentials Using these techniques, you can create your own login pages the hard way, as explained in 20 Before continuing any further, you should set up your website to use forms authentication by adding the <forms> tag Here s what you need to add: <configuration> <systemweb> .. <authentication mode="Forms" /> </systemweb> ...

The childCount() function returns the number of child nodes for a given parent ID. childCount( &$model, id[mixed], direct[bool] ) When id is set to false, all top-level nodes will be read; otherwise, it will read only the supplied ID node as the parent; when direct is set to true, only direct children are counted.

</configuration> Optionally, you can define additional details such as the location of the login page and the time before the security cookie times out, as described in 20 You may also want to add.

It s quite possible that you ll create dozens of ASPNET applications without once defining a custom event However, you ll be hard-pressed to write a single ASPNET web page without handling an event To handle an event, you first create a method called an event handler The event handler contains the code that should be executed when the event occurs Then, you connect the event handler to the event To handle the PriceChanged event, you need to create an event handler Usually, this event handler will be placed in another class, one that needs to respond to the change The event handler needs to have the same signature as the event it s handling.

In the Product example, the PriceChanged event has no parameters, so the event handler would look like the simple subroutine shown here: Private Sub ChangeDetected() ' This code executes in response to the PriceChanged event End Sub The next step is to hook up the event handler to the event There are two ways to connect an event handler The first option is to connect an event handler at runtime using the AddHandler statement Here s an example: Dim saleProduct As New Product("Kitchen Garbage", 4999D) ' This connects the saleProductPriceChanged event to an event handling ' method called ChangeDetected AddHandler saleProductPriceChanged, AddressOf ChangeDetected ' Now the event will occur in response to this code: saleProductPrice = saleProductPrice * 2 This code attaches an event handler to a method named ChangeDetected.

This function is a convenience method for returning a hierarchical array to be used in making HTML select boxes or breadcrumbs. generateTreeList( &$model, conditions[mixed], keyPath[string], valuePath[string], spacer[string], recursive[int] ) conditions = null: SQL conditions as a string or as an array (similar to conditions used in the find() model function) keyPath = null: A string path to the key, for example, {n}.Tag.name valuePath = null: A string path to the value; similar to keyPath spacer = '_': For each level that a node falls under the parent, this character will be placed before the returned list item; for example, the grandchild of the parent node would be returned with two spacers in front of the name recursive = -1: The recursive value for the returned data

This method is in the same class as the event hookup code shown here, and for that reason you don t need to specify the object name when you attach the event handler If you want to connect an event to a different object, you d need to use the dot syntax when referring the event handler method, as in myObjectChangeDetected You ll notice that this code is quite similar to the delegate example in the previous chapter In fact, events use delegates behind the scenes to keep track of the event handlers they need to notify..