ASP.NET PDF Viewer using C#, VB/NET

<identity/> <machineKey/> <pages/> <processModel/> <securityPolicy/> <serviceDescriptionFormatExtensionTypes/> <sessionState/> <trace/> <trust/> <webServices/> </system.web> </configuration>

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As discussed in 9, .NET and F# programming frequently uses reflective techniques to analyze the types of objects, create objects at run time, and use type information to drive generic functions in general ways. For example, in 9 you saw an example of a technique called schema compilation, which was based on .NET attributes, F# data types, and a compiler to take these and use reflective techniques to generate an efficient text file reader and translator. The combination of reflective techniques and .NET generics allows programs to operate at the boundary between statically typed code and dynamically typed data.

Performance Impact of Bulk Collect Let s see how bulk collect can improve your code s performance. Recall how in the section Using PL/SQL When a SQL Solution Exists, the PL/SQL solution involved selecting each row one by one and inserting the rows one by one into the table. The correct solution in that case, as you learned, was to use a single SQL statement. But what if the results have to be output to a file instead of a table In such a scenario, a SQL statement based solution isn t feasible; you can use bulk collect to improve performance. Let s compare two cases: We select 500,000 numbers from table t1 (created and populated as discussed in the section Using PL/SQL When a SQL Solution Exists ) and output them to a file. We bulk collect 500,000 numbers, 500 at a time (the number 500 is passed as a parameter), and output them to a file. We will use the PL/SQL-supplied package UTL_FILE to write the contents into a file (see the section Alternatives to BFILEs for File Operations in 12 for more details on the UTL_FILE package). To use UTL_FILE, we first need to create a directory object that points to a real operating system directory: benchmark@ORA92I> create or replace directory temp_dir as 'C:\TEMP'; Directory created.

There are a number of facets to reflective programming with .NET. One simple kind of reflective programming is when a whole range of data structures are accessed in a general way. For example, .NET includes a type System.Array that is a parent type of all array types. The existence of this type allows you to write code that is generic over all array types, even one-dimensional

Note The purpose of this chapter is not to detail each and every option within a web.config file (that would require a small book on its own). Rather we focus on select security-specific elements. If you wish to see each and every option, look up the ASP.NET Settings Schema topic using the .NET 2.0 Framework SDK Documentation.

Next, we create a procedure called no_bulk_collect that will insert 500,000 numbers selected from t1 without using bulk collect into a file called no_bulk_collect.txt in the directory C:\TEMP. Inside the procedure, we first declare a file handle: benchmark@ ORA92I> create or replace procedure no_bulk_collect 2 as 3 l_file_handle utl_file.file_type; 4 begin Then we open the file, retrieving the file handle into our variable l_file_handle: 5 l_file_handle := utl_file.fopen( 'TEMP_DIR', 'no_bulk_collect.txt', 'W' );

and multidimensional arrays. This is occasionally useful, such as when writing a generic array printer. Table 10-14 summarizes the primary general types defined in the .NET Framework.

We loop through the records, outputting the value of the x column into the file. At the end, we close the file handle: 6 7 8 9 10 11 12 for i in( select x from t1 ) loop utl_file.put_line( l_file_handle, i.x ); end loop; utl_file.fclose( l_file_handle ); end; /

While it s not mandatory to include a web.config file as far as the ASP .NET runtime is concerned, they are downright mandatory when securing an ASP .NET web application. So much so that it s not uncommon for a single ASP .NET web application to make use of multiple web.config files. By doing so, you re able to leverage configuration inheritance.

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