|
Link:http://output.to/sideway/default.asp?qno=120100023 Request Object
Request Object
Request object of ASP is related to
retrieving data by the server from the
client.
Methods
|
Method |
Description |
|
BinaryRead |
Retrieve the data part of a POST
request by the server from the client |
Properties
|
Property |
Description |
| ClientCertificate (collection) |
Retrieve the field values of the client certificate which is sent in the HTTP
request. |
|
Cookies (collection) |
Retrieve the values of cookies which is sent in the HTTP request. |
|
Form (collection) |
Retrieve the element values of a form which is sent in the body of HTTP request
with a form using the POST method. |
|
QueryString (collection) |
Retrieve the variable values of query string which is sent in the HTTP
request. |
|
ServerVariables(collection) |
Retrieve the values of predetermined environment variable. |
|
TotalBytes |
A read only property to specify the total number of bytes sent by the client in
the body of the HTTP request |
Remarks
- For an unknown variable of collection of a Request, The Request object returens
EMPTY
- The collection name can be omitted by directly calling the variable as the
variable of the function. i.e. Request(variable)
- If no collection name is specified, the web server searches the variable name in
the collections in the order of: QueryString, Form, Cookies, ClientCertificate
and ServerVariables and only the value of first instance will be returned
- The methods and properties of ASP request object can be grouped into
- ReadOnly property: TotalBytes;
- Data Stream: BinaryRead;
- Data Field/Collection: QueryString; Form; Cookies; ClientCertificate;
ServerVariables.
Link:http://output.to/sideway/default.asp?qno=120100024 Server Object
Server Object
Server object of ASP is related to the manipulation of utility functions or
server tasks on the server.
Methods
|
Method |
Description |
|
CreateObject |
Create an instance of an object from a component on the server. |
|
Execute |
Execute an ASP file
similar to a procedure call |
|
GetLastError |
Get the last error from the ASPError that describes the error condition of
processing the script in an ASP file |
|
HTMLEncode |
Encode and convert the specified string according to the HTML encoding rules |
|
MapPath |
Map and Convert the specified path including virtual path on the
server, or relative path relative to the page into the corresponding physical
path. |
|
Transfer |
Transfer all current state information to another ASP file for continue
processing by the new ASP file according to all transferred state information
similar to Response.Redirect method. |
|
URLEncode |
Encode and convert the specified string according to the URL encoding rules
including escape characters . |
Properties
|
Property |
Description |
| ScriptTimeout |
Set the length of time out period that allowed the script to run on the server. |
Remarks
The methods and properties of ASP response object can be grouped into
- File Processing:
- Execute a file:
Execute;
- Execute a file with state information: Transfer;
- Object: CreateObject
- Utility Function
- Error detection: GetLastError;
- Code Conversion: HTMLEncode; URLEncode;
- File system: MapPath.
- File execution: ScriptTimeout
Link:http://output.to/sideway/default.asp?qno=120100025 Application Object
Application Object
Application object of ASP is related to the manipulation of information about
entire web application for all clients on the server.
Methods
|
Method |
Description |
|
Contents.Remove |
Remove
or delete an item from the Contents collection of Application object. |
|
Contents.RemoveAll |
Remove
or delete all items from the Contents collection of Application object. |
|
Lock |
Lock the properties of Application object by only one client at a time for
preventing other clients from modification. |
|
Unlock |
Unlock or release the properties of Application object by the only one client at
a time for allowing other clients to modify |
Properties
|
Property |
Description |
| Contents (Collection) |
Add or set the value of an item of the Contents collection of Application object
through script commands. |
| StaticObjects (Collection) |
Collection of all objects added to the session through the <OBJECT> tag
within the Application scope. |
Events
|
Event |
Description |
| Application_OnEnd |
Event occurs on the end of the Application after all the Session_OnEnd event.
Available objects are Application Object and Server Object built-in objects. |
| Application_OnStart |
Event occurs on the
start of the Application before the first Session_OnStart
event. Available objects are Application Object and Server Object built-in
objects. |
Remarks
All items in the collections of Application object is available within the scope
of application.
-
An object instance of a component can be assigned to an item of a Contents
Collection through the Server.CreateObject method with the Set keyword.
-
And an embedded object can also be assigned to an item of a StaticObjects
Collection through the <OBJECT> tag
-
When store an object instance in an Application object, the threading model of
objects should be considered because the threading model of objects have a
significan impact on the performance and security context of the object.
-
But all built-in objects cannot be assigned to neither a Content Collection nor
a StaticObjects Collection.
-
Besides, an array can also be assigned to an item of a Contents Collection in
the form of a collection, but the elements of the stored array in the Contents
Collection cannot be manipulated as an ordinary array directly because the array
is stored as a collection.
-
The methods and properties of ASP application object can be grouped into
- Setup/Event: Application_OnEnd; Application_OnStart
- Variable Control: Lock; Unlock
- Object: StaticObjects
- Variable:
- Add/Set: Contents;
- Remove:
Contents.Remove;
Contents.RemoveAll
|
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