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asp_web_howto thread: How to use drop-down list to create dynamic frame?


Message #1 by "Brian Zeng" <levin001@h...> on Fri, 22 Feb 2002 03:42:08
Hi,

I am developing a web based database system by using ASP. I want to use 

frame to separate the following three sections: (each section has a 

collection of properties)

-----------------------------------------------

1. top frame:    Project

-----------------------------------------------

2. middle frame: WBS (Project-WBS is one to many relationship)

-----------------------------------------------

3. bottom frame: Task (WBS-Task is one to many relationship)

-----------------------------------------------



the first time user access this page, it will display a select box which 

contains all the existing projects, which are returned from the project 

tables in the database. (the project list is implemented by asp)



I would like user to simplily select a project number, the middle frame 

will automatically display all the associated WBS under the project. If 

there is only one WBS, the middle frame should display all the properties 

assoicated with the WBS. Otherwise, it should display a select box with 

all the WBS under the project. 



This will require the code to take action when you select a project, which 

is to display all WBS under the project -- the middle frame. There must be 

a function in javascript such as onselect(), which fire up the middle 

frame by passing a parameter, which is the project number selected by the 

user. Then the middle frame, which is an asp page, accepts the parameter 

and lookup the database and display all the WBS.



Could you please help me with the following code:

1. What function should I use to fire up the middle frame after the user 

select a project number? And how to pass the project number, which is 

selected by the user to the middle frame? 



2. How does the middle frame asp accept the parameter -- selected project 

number -- and update itself.



I have got the skill to pass parameter from one asp page to another, but 

not between frames. Could you please give me a simply code structure for 

the above scenario?



Thanks heaps



Brian


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