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Asp objects
An ASP object is something that typically has methods, properties, and collections. The main ASP objects are the Request, Response, Session, Server, and Application objects. The Request object collects data sent from the client to the server, including form data and query strings. Form data is collected using either the GET method, where data is appended to the URL, or the POST method, where data is sent as a separate bit stream. The Request.Form collection retrieves values of form elements submitted via a POST request. It can be used to display captured form values on subsequent pages.
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Asp objects
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- 2. AN ASP OBJECTIS SOMETHING THAT TYPICALLY HAS METHODS(determine the things one can do with objects) PROPERTIES(attribute that describes the object) COLLECTIONS(constitutes different sets of key value pairs)
- 3. WORKING OF ASPOBJECTS client request server Request object Response object Session object response Server object Asp error object Application object
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- 6. BEFORE LEARNING ABOUT RESPONSE OBJECTLET’S UNDERSTAND THE GET & POST METHOD
- 7. These two methods areused to send data captured by various form elements
- 8. GET METHOD The browsersubmits the form data as the part of the url. The data captured is in the form elements is appended in the URL.
- 9. POST METHOD Send datacaptured by form elements back to the server as a separate bit stream
- 10. IF METHOD ISNOT SPECIFIED IN YOUR FORM THEN BY DEFAULT METHOD USED BY THE BROWSER IS A GET METHOD
- 11. REQUEST OBJECT: Collection: 1.The formcollection 2.Query String(important)
- 12. FORM COLLECTION: Syntax: Request.form(element)[(index)|.count) Nameof the form element Used for selecting one of the Multiple values. Eg.radiobutton Elements or listbox elements IT RETRIVES THE VALUES OF THE FORM ELEMENTS POSTED TO HTTP REQUEST BODY,WITH A FORM USING POST METHOD
- 13. <body> <form action="nextpage.asp" method="post"> <p>ENTERYOUR NAME:<input name="USERNAME" size="20" type="text"></p> <p>CHOOSE YOUR CITY:<select name="CITY"> <option>DELHI</option> <option>BANGALORE</option> <option>KOLKATTA</option> </select> <input type="submit"></p> </form> </body> Elements TextBox & Dropdown list that contain values
- 14. WHEN SUBMITBUTTON IS CLICKED THE FORM IS POSTED TO ASP PAGE nextpage.asp The following form data is sent back to server(Remember post method) USERNAME=Anamika&CITY=DELHI These are the values which are entered in the text box and selected from the dropdown list
- 15. NOW TO SHOWTHESE VALUES IN THE NEXT PAGE WE USE: <body> Welcome <%=Request.Form(“USERNAME”)%> City Selected<%=Request.Form(“CITY”)%> </body> These are just the values captured from the form elements of previous page USERNAME=Anamika&CITY=DELHI