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{ RemoveAt(index); break; } } IsReadOnly = true; } The Add() method is pretty straightforward. To avoid possible duplicate object issues, it first ensures that the broken rule isn t already in the list by calling the Remove() method. Then it changes the collection to be read-write, adds the rule to the collection, and sets the collection back to be read-only. While it could just see if the collection contains the broken rule, removing and re-adding the rule is better, because it ensures that the human-readable description for the rule is current. The rule method could have changed the description over time. The Remove() method is a bit more complex. It has to scan through the collection to find a rule with the same rule name. Notice that no exception is thrown if the item isn t in the collection. If it isn t there, that s fine then there s just no need to remove it. There are two other methods in BrokenRulesCollection worth mentioning. Both provide information about the contents of the collection. The GetFirstBrokenRule() method scans the list and returns the first broken rule (if any) for a specified property. You may recall that this method was used in Csla.Core.BusinessBase to implement the IDataErrorInfo interface. The second is an overridden ToString() method that concatenates the human-readable descriptions of all broken rules into a single string value. This too is used in the IDataErrorInfo implementation to return all the errors for the entire object. vb.net code 39 reader VB . NET Image: Example to Read Code 39 Barcode with VB . NET Codes in ...
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Free to download .NET, C#, VB . NET barcode reader app for Code 39 ; C# Code 39 recognition SDK; VB . NET Code 39 recognition SDK. On principal the database takes care of indexes for you and you shouldn t care; however, with time indexes become fragmented and lose efficiency, so it s really a matter of defragmenting them The timing depends on when the fragmentation of your tables reaches a level where your database system recommends defragmenting them; however, there is no way to find that out from Axapta, so you will have to use the tools provided for that purpose by your database system The advantage of having Axapta do it for you is that in MS SQL Server and Oracle you will either have to script it or manually drop every index and re-create it, a tedious process. code 128 auto font word, word ean 13, upc-a word font, word pdf 417, birt upc-a, birt qr code vb.net code 39 reader read code 39 barcode with vb . net - Stack Overflow
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NET Code 39 Barcode Reader , Reading Code - 39 barcode images in .NET, C#, VB . NET , ASP.NET applications. The ValidationException class allows CSLA .NET to throw a custom exception to indicate that a validation problem has been found. This exception is thrown by the Save() method in BusinessBase. This exception class doesn t add any new information to the base Exception class from the .NET Framework. Thus its code is very simple, since it merely declares a set of constructors, each of which delegates to the Exception base class. You can look at the code from the code download for the book. The reason ValidationException exists is to allow UI code to easily catch a ValidationException as being separate from other exceptions that might be thrown by the Save() method. For instance, UI code might look like this: try { customer = customer.Save(); } catch (ValidationException ex) { // handle validation exceptions } catch (Exception ex) { // handle other exceptions } Custom exceptions, even if they offer no extra information, are often very valuable in this way. At this point, the Csla.Validation namespace is complete, except for CommonRules, which will be discussed in 5. The framework now supports validation rules and broken rule tracking. Axapta offers great utilities for tracing database statements, and although that s beyond the scope of this book, we would like to call the attention of all DBAs and developers to their importance in debugging database errors and in performance tuning The heart of this functionality is the Options form (see Figure 19-4), which you can access from the menu bar path of Tools Options.. If a proxy type and assembly is specified for the channel adapter, then it is returned; otherwise, the default value of Local is returned. Other settings that are encapsulated as properties on ApplicationContext are DataPortalUrl and AuthenticationType. Table 5-4 and Figure 5-3 show the results of comparing elapsed times taken when I inserted 10,000 records for the cases of standard update batching and Oracle update batching. For no batching, it took an average of 13,201 milliseconds to insert 10,000 records. vb.net code 39 reader Visual Studio . NET Barcode Scanner Library API for . NET Barcode ...
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