Difference between revisions of "OOP Class9"

Revision as of 14:24, 4 April 2006 (view source) Jeff (talk | contribs) (→‎Persiting Data) ← Older edit		Revision as of 16:54, 19 April 2006 (view source) Jeff (talk | contribs) Newer edit →
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	==HTML Forms==		==HTML Forms==

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Revision as of 16:54, 19 April 2006

HTML Forms

Http is a staless protocol. There is mo mechanism built in to the protocol that allows the server to remeber clients or requests. An http simply responds to http verbs GET, POST, PUT, DEL, TRACE etc. contained in RFC 2068 HTTP/1.1

Old html forms post information using forms in 2 ways with a get or a post http request.

Get

Get send information to the server using the URI. Limited to 1024 character in some browsers and servers.

Example http://iam.colum.edu/oop/classsource/class9/simpleGet.html simpleGet.html - source

The simpleGet.html pages form has the action of 'simpleGet.aspx' this mean that when the form is submitted the browser will request the 'simpleGet.aspx' with whatever parameters are in the form. Since the method = get theese prarmenters will show up are query string parameters

URI and querystring parameters

URI - Universal Resource Identifier http://src.doc.ic.ac.uk/computing/internet/rfc/rfc1630.txt RFC1630

Http URI

Protcol	Host	Port	Path	File	Fragment identifier	Querystring
http://	info.cern.ch	:8000	/imaginary/test/	file.html	#link	?test=yes

Post

Post posts the varibles in the HTTP Header.

Example http://iam.colum.edu/oop/classsource/class9/simplePost.htmlsimplePost.html - source

FirstName:
LastName:
Header Name 	Value HttpMethod 	GET
Connection 	keep-alive
Keep-Alive 	300
Accept 	text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Charset 	ISO-8859-1,utf-8;q=0.7,*;q=0.7
Accept-Encoding 	gzip,deflate
Accept-Language 	en-us,en;q=0.5
Cookie 	ASP.NET_SessionId=ezfgw255ix0zd5yogj3eawej
Host 	imdev
Referer 	http://imdev/infod/jeff/
User-Agent 	Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1

HTML Forms Example HTML Forms

http://iam.colum.edu/oop/classsource/class9/htmlForms.html htmlForms.html - source

Web Forms

Examples of Web Forms

http://iam.colum.edu/oop/classsource/class9/aspForms.aspx aspForms.aspx - Source

todo examples of all the html elements and how they react to form submits

Persiting Data

POST and GET

an asps page posting to itself

Delgates

Events in c#

Event handlers

OnClick

http://iam.colum.edu/oop/classsource/class9/events/events1.aspx events1.aspx - source

OnCommand

http://iam.colum.edu/oop/classsource/class9/events/events2.aspx events2.aspx - source

http://iam.colum.edu/oop/classsource/class9/events/events3.aspx events3.aspx - source

Home Work

Make an post an catch aspx page with a form of your very own that asks questions about one of your objects. Use regular html form and aspx events to demostrate you class.

Use the form values to create a new instance of your class.

Get and read Intro and Chapter 1 of Head Start Design Patterns