By Shelley Powers
Microsoft's energetic Server Pages (ASP) know-how has turn into wildly well-liked by internet builders. in spite of the fact that, the recommendations for constructing customized ASP parts, let alone the inevitable snags and pitfalls, should not good documented. what is extra, the profitable ASP part developer has to be a jack-of-all-trades, with a few wisdom of COM and COM+, threading versions, and the ASP item version, in addition to a mastery of 1 or extra language instruments and improvement environments.That's the place Developing ASP Components, second version, is available in. Its first part explores the subjects each person must recognize to increase potent ASP components:
- Configuring the ASP improvement environment.
- ASP parts and the part item version (COM).
- ASP parts and threading models.
- ASP elements and part prone, which offer quite a few providers to ASP components.
- The gadgets, homes, tools, and occasions on hand within the ASP item model.
ASP parts are language autonomous, and builders more and more are inclined to use greater than a unmarried language software. therefore the rest of the ebook makes a speciality of ASP part improvement utilizing one in every of significant improvement tools--Microsoft visible uncomplicated and Microsoft visible C++ (with the ActiveX Template Library)--along with a few different languages, corresponding to Perl and Delphi. every one part makes a speciality of the problems that trouble the ASP part developer utilizing that exact improvement setting. those concerns include:
- gaining access to ASP's intrinsic objects.
- getting access to facts utilizing ADO.
- growing n-tier net functions with VB.
- dealing with endurance utilizing MFC besides visible C++/ATL.
It's this powerful specialise in significant improvement environments, besides a radical grounding in crucial ASP themes, that makesDeveloping ASP Components the definitive source for the ASP software and part developer.
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Additional info for Developing ASP Components
TstAdmin component. The adminScriptLanguage method displays the value of the AspScriptLanguage property for the chap2 virtual directory. Currently, this value should be VBScript, which is the default scripting language used for ASP pages. Example 2-4. asp, to display the name of the default scripting language. Since the AspScriptLanguage property has a datatype of String, the return value for the function is defined to be String—other properties will have other datatypes. The ASP test page uses VBScript, which supports only variants; as a result, the processing to display the return value can be the same regardless of the datatype returned.
You'll need to adjust the examples shown in the following sections to match your environment. The Name property can be accessed from ASP components as well as from an ASP scripting block. Example 2-2 shows a method that accesses the IIS Admin object and returns the object's ADSI Name. Try this by creating the method in the tstAdmin class of the asp0202 project, name the method adminName, and define it to return a String value. Example 2-2. Returning the IlSWebService Object's ADSI Name Property Function adminName() As String Dim myObject Set myObject = GetObject("IIS://localhost/W3SVC") adminName = myObject.
0, administrative information for the web service was stored in the Windows Registry, an online binary database containing name-value pairs accessible via paths. 0, Microsoft added the IIS Metabase, a memory-resident data store that is quickly accessible and contains configuration and administration information for IIS. As with the Registry, Metabase entries are found via paths, or keys, similar to those used with file paths. These key paths, also referred to as ADsPaths, have the same 30 Chapter 2: Setting Up the ASP Development Environment structure as the paths used within ADSI and comply with the following general structure: IIS://machinename/service/service_instance In this line, machinename can be either L o c a l H o s t for the local machine or a specific name, service can be something such as W3SVC (a web service), and service_instance can be a specific instance of that service, such as a web site.
Developing ASP Components by Shelley Powers