vb.net barcode reader code Part II Designing Types in .net C#

Make pdf417 2d barcode in .net C# Part II Designing Types

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You get error 4936, stating that the computed column is not deterministic . Although the property RealInt is both deterministic and precise, you have to inform SQL Server of this . You do so by using the SqlMethod attribute for the get method of the RealInt property:

When a method that uses generic type parameters is JIT-compiled, the CLR takes the method s IL, substitutes the specified type arguments, and then creates native code that is specific to that method operating on the specified data types . This is exactly what you want and is one of the main features of generics . However, there is a downside to this: the CLR keeps generating native code for every method/type combination . This is referred to as code explosion . This can end up increasing the application s working set substantially, thereby hurting performance . Fortunately, the CLR has some optimizations built into it to reduce code explosion . First, if a method is called for a particular type argument, and later, the method is called again using the same type argument, the CLR will compile the code for this method/type combination just once . So if one assembly uses List<DateTime>, and a completely different assembly

our personal computer is a curious combination of digital data and temperamental machinery. To keep your system running smoothly, it pays to perform some regular maintenance tasks. In particular, it s wise to do the following on a regular basis:

AppendCacheExtension SetCacheability SetETag SetExpires SetLastModified SetMaxAge SetRevalidation SetValidUntilExpires SetVaryByCustom VaryByHeaders VaryByParam

In this chapter, you visit the most important topics while examining both rendered controls and composite controls . Although the Page class is sizable, it uses straightforward logic and unfolds nicely in practice . The easiest way to start is to jump into building a custom control .

Given two sets with the same universe, we may need to consider the single set of elements contained in either set. This is the union of the sets. Similarly, we may wish to consider the set of elements contained in both sets. This is the intersection of the sets.