INPUT FORMS

1
INPUT FORMS
2
BOOK DEFINITIONS

• WEB PAGE
• A PAGE MARKED UP WITH HTML ONLY
• HTML FORM
• INPUT FORM TO SEND DATA TO SERVER
• CAN BE DONE USING ONLY HTML (AS IN ASP)
• WEB FORM
• TWO SEGMENTS
• HTML TEMPLATE
• PAGE LAYOUT
• ASP.NET SERVER CONTROLS
• ASP.NET CODE
• INCLUDES PROCESSING LOGIC
• GENERATES DYNAMIC CONTENT
• DISPLAY THROUGH ASP CONTROLS IN HTML TEMPLATE

3
DIFFERENCE

• HTML
• ONLY HTML TAGS WERE PROCESSED
• IF IT DID NOT RECOGNISE A TAG, IT IGNORED
• ASP.NET FORM
• SERVER CONTROLS INCLUDED BETWEEN ltHTMLgt TAGS

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ltformgt TAG

• OLD HTML (RENDERED)
• ltFORM METHODPOST ACTIONRECEIVE.ASPgt
• .
• .
• . lt/FORMgt
• NEW ASP.NET (DYNAMICALLY CREATED)
• ltFORM IDMYFORM RUNATSERVERgt
• lt/FORMgt

5
REASONS

• MAINTAIN STATE
• NEW CONTROLS
• CALENDARS
• GRIDS
• SOME STANDARD DATA VALIDATION

6
ASP.NET SERVER CONTROLS (P. 75)

• DISPLAY TEXT
• ltASPLABELgt
• CHOOSE FROM LIST OF ITEMS
• ltASPLISTBOXgt
• DROPDOWN LIST
• ltASPDROPDOWNLISTgt
• TYPED INPUT
• ltASPTEXTBOXgt

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MORE SERVER CONTROLS

• RADIO BUTTONS
• ltASPRADIOBUTTONgt
• ltASPRADIOBUTTONLISTgt
• CHECKBOX
• ltASPCHECKBOXgt
• ltASPCHECKBOXLISTgt
• SUBMIT
• ltASPBUTTONgt

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ltASPLABELgt

• ltHTMLgt
• ltASPLABEL IDMSG RUNATSERVER TEXT JOE
  /gt
• ltHTMLgt
• JOE
• __________________________________________________
  _______
• ltSCRIPTgt
• SUB PAGE_LOAD( )
• MSG.TEXT SINCLAIR LEWIS
• END SUB
• lt/SCRIPTgt
• ltHTMLgt
• ltASPLABEL IDMSG RUNATSERVER TEXT JOE
  /gt
• ltHTMLgt
• SINCLAIR LEWIS

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ltASPDROPDOWNLISTgt

• ltFORM RUNATSERVERgt
• CHOOSE CITY ltbrgt
• ltaspdropdownlist idcity runatservergt
• ltasplistitemgtNewYork lt/asplistitemgt
• ltasplistitemgtNewBoston lt/asplistitemgt
• ltasplistitemgtNewDallas lt/asplistitemgt
• lt/aspdropdownlistgt

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VIEW SOURCE

• ltFORM NAME CTR10
• METHOD POST
• ACTION DROPDOWNLIST_X.ASPX
• IDCTR10gt
• ltINPUT TYPE HIDDEN
• NAME _VIEWSTATE
• VALUE . /gt

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ltasplistboxgt

• ltasplistbox
• runat server
• idcity
• selectionmodemultiplegt
• ltasplistitemgtLondonlt/asplistitemgt
• ltasplistitemgtMoscowlt/asplistitemgt
• lt/asplistboxgt
• Question can we use selectionmode multiple
  in ltaspdropdownlistgt

12
ltasptextboxgt

13
ltasptextboxgt

• ltasptextbox idtxtName runatserver /gt
• ltasptextbox idtxtMore runat server
  textmode multiline rows 5 /gt
• ltasptextbox runatserver idtxtPW textmode
  password /gt

14
ltASPTEXTBOXgt

• DEFAULT VALUES
• (WHY ARE WE NOT ABLE TO PUT DEFAULT VALUES IN
  MULTILINE TEXTBOX?)

15
ltASPRADIOBUTTONgt

• (FOR A SINGLE BUTTON
• SORT OF LIKE CHECKBOX?)

16
ltASPRADIOBUTTONLISTgt

• CAN SELECT ONLY ONE

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ltASPCHECKBOXgt

• ltASPCHECKBOX IDCHK_QUICKSHIP RUNAT
  SERVERgt
• WHAT IS THE VALUE THAT IS TRANSMITTED?
• HOW DO WE MAKE SELECTED A DEFAULT?

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ltASPCHECKBOXLISTgt
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• www.w3schools.com/aspnet/aspnet_examples.asp