ASP I

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ASP I

• Topics
• --What is ASP???? http//searchwin2000.techtarget.
  com/sDefinition/0,,sid1_gci213787,00.html
• --VBScript
• --OBJECTS RESPONSE WRITE
• --Variables

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ASP- All Inclusive Tutorial

• General ASP Tutorial
• http//www.aspronline.com/learn
• An ASP Tutorial Specific to Assignments
• http//webwizguide.com/asp/tutorials/connecting_to
  _a_database.asp

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• Money for ASP

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Static Dynamic(ASP)
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ASP

• Server-side scripting language, lets you choose
  the syntax you wish to use for development.
• Two most popular scripting languages for ASP are
  VBScript and Jscript
• PerlScript is another less popular option

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ASP

• To set what scripting language you want to use,
  at the top of your ASP programs, you need to add
  a single line of code
• lt_at_ LANGUAGEVBSCRIPT gt
• VBScript is more widely used
• JScripts syntax is much like JavaScripts.

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ASP OBJECTSWhat is an object???

• Response Object
• One of the most important objects in ASP.
• It is the object which communicates between the
  server and the output which is sent to the
  client.
• To write an ASP page, all you need to do is write
  a standard HTML page, putting in the Active
  Server Pages script where needed.
• Active Server Pages script is denoted by the text
  between lts and gts.

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Response Object

• To send ASP to the client, you need to use the
  Response Object.
• The method of the Response Object which sends
  data to the client is the Write method.
• Unlike an HTML page which is sent directly to the
  client, the ASP page passes through the servers
  ASP.DLL.
• What is DLL???? http//searchwin2000.techtarget.co
  m/sDefinition/0,,sid1_gci213902,00.html

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The Response Object

• Example
• lt_at_ LANGUAGEVBSCRIPT gt
• ltHTMLgt
• ltBODYgt
• lt Response.Write (Hello, World!) gt
• lt/BODYgt
• lt/HTMLgt

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Variables in ASP

• All variables are of type Variant. You dont
  have to declare if your variable is an integer,
  string, or object.

lt_at_ LANGUAGEVBSCRIPT gt lt
Declare a variable. A single tick denotes a
comment in VBSscript Dim MyName
To declare a variable, you just put the
word Dim in front of the variable name. Lets
assign something to MyName MyName Scott
Mitchell
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Variables in ASP

• Lets create some more variables
• Dim Age, Pi
• Age 20
• Pi 3.14159

Since all variables are variants, we
can Reassign values. (Bad coding,
though!) MyName 45 Pi Age Age Yellow
Schoolbus!
gt
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Variables in ASP

• To print out the variables, you could simply do a
  Response.Write.

• Example
• lt_at_ LANGUAGEVBSCRIPT gt
• lt

Declare a variable. A single tick denotes a
comment in VBScript Dim MyName MyName Scott
Mitchell
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Variables in ASP

• Print out MyName
• Response.Write (MyName)

To concatonate strings in VBScript, use
the ampersand Response.Write(My name is
MyName) gt
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Variables in ASP

• You can explicitly cast the type of a variable
  when you assign to it.(This is good programming
  technique)

• Example of CStr Cint)
• gt_at_ LANGUAGEVBSCRIPT gt
• gt
• Declare the variable MyName.
• Dim MyName
• Explicitly make MyName a string
• MyName CStr(Scott Mitchell)

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Variables in ASP

• Dim Age, Pi
• Explicitly make Age an integer
• Age Cint (20)
• Explicitly make Pi a floating point
• value
• Pi CDbl (3.14159)
• gt

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ADO WEB SITE

• ADO
• http//www.w3schools.com/ado/default.asp

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ASP SCRIPT
lthtmlgt ltbodygt ltform action"demo_simpleform.asp"
method"post"gt Your name ltinput type"text"
name"fname" size"20"gt ltinput type"submit"
value"Submit"gt lt/formgt lt dim fname fnameRequest
.Form("fname") If fnameltgt"" Then
Response.Write("Hello " fname "!ltbr /gt")
Response.Write("How are you today?") End
If gt lt/bodygt lt/htmlgt