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New PDF release: CSLA dot NET Version 2.1. Handbook C Sharp Edition

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Let’s look at each approach. Short-Circuiting by Priority When short-circuiting by priority, you must use the overloads of AddRule() and AddInstanceRule() to set the priority of your rule methods. Remember that priority 0 is the default, and that larger priorities are executed after lower priorities. exposes a property, ProcessThroughPriority, that controls when shortcircuiting will have an effect. All rule methods at ProcessThroughPriority or smaller will be invoked. Rule methods with priorities greater than ProcessThroughPriority will only be invoked if no previous rule method has returned false with a severity of Error.

They are all getting checked anyway. But when CheckRules() is called to check the rules of a specific property, any dependant property’s rules must also be checked. Count; i++) { string dependantProperty = dependancies[i]; CheckRules(rules, dependantProperty); } } } } } The GetList() method of RulesList is called to retrieve the list of rule methods for the specified property. If that list is not null, the rules are invoked by calling a private overload of CheckRules(). That private overload contains code to implement rule priorities and shortPage 20 circuiting, and I’ll discuss it later.

Within the method, the target and e values are strongly typed, so any properties or methods defined on Customer and MaxCreditRuleArgs are available for use. In either case, notice that you don’t need to write any code in the method to cast the parameter values. The need to cast is avoided through the use of generics. Adding Strongly-typed Rule Methods to your Objects When you have rule methods defined using the generic syntax shown above you need to use generic overloads of AddRule() and AddInstanceRule() when associating those methods with your business object’s properties.

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CSLA dot NET Version 2.1. Handbook C Sharp Edition by Lhotka

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