RE: Reference A var on Master Page from User Control

Hi Michael,

Yes, you should have placed the event wiring during the page.init. (The
other solution of using the handles statement of the function signature that
you got working does the same)
--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com


"Michael" wrote:

Hi Phillip,
Thanks for the reply. Ok, I think I'm almost there. What I did was add the
following to the Page_Load event of the Master Page:
AddHandler LogIn1.Alarm , AddressOf OnCurrentUser

For some reason the event is not kicked off. I stepped through the code, and
after I hit submit (Login) the code in the Login user control works right,
and calls the RaiseEvent procedure. But for some reason the Master Page event
is not kicked off. The Page_Load event of the Master Page is run again after
clicking the Login button so the AddHandler is being called. Does this make
since. Thanks for any help.
Michael


"Phillip Williams" wrote:

Hi Michael,

You are 99% done. You just missed the correct syntax for AddHandler. It
should be like this:

AddHandler NameOfObject.Event, AddressOf MethodHandlingTheEvent
e.g.
AddHandler LoginInfoObject.Alarm, AddressOf OnCurrentUser

You could have also used the handle keyword on your method declaration like
this:

Public sub OnCurrentUser(sender as Object, e as UserInfoEventArgs ) Handles
LoginInfoObject.Alarm
_CurrentUser = e.UserInfo
End Sub

--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com


"Michael" wrote:

Hi Phillip,
Thanks so much for the reply. I've started to look into this and have come
across one issue. It seems that AddHandler is not supported in ASP.NET. Is
this true, if so, what includes do I need to include into the project. Here
is what I have so far.
Just a refresher of what I needed:
1. User enter UserId & password and selects submit.
2. The login User control will check what roles they have and create a User
Object.
3. Set the User Object to a Value stored in the MasterPage.
4. Purchasing screen shown and depending on the Role the user has will
determine what the user sees (Admin/Standard user).
So what I have come up with so far based on the event based noticifaction.
Stand alone Class File:
Public Class UserInfoEventArgs
Inherits EventArgs
Private _User as User

Public sub new(UserInfo as User )
_User = UserInfo
End Sub

Public ReadOnly Property UserInfo() as User
Get
UserInfo = _User
End Get
End Property
End Class

In the Login User Control:
Public Event Alarm as UserInfoEventHandler

Protected OverRidable Sub OnAlarm(e as UserInfoEventArgs )
RaiseEvent Alarm(me, e)
End Sub

Sub AuthenticateUser(userId as string, password as password)
'Do stuff here.......
'Now feed the UserInfo to the MasterPage via a Event
Dim e as New UserInfoEventArgs(lUser)
OnAlarm(e)
'Do more stuff....
end sub

In the MasterPage:
AddHandler Alarm, AddressOf OnCurrentUser

Public sub OnCurrentUser(sender as Object, e as UserInfoEventArgs )
_CurrentUser = e.UserInfo
End Sub
Note: I get a syntax error on the AddHandler line.

Do I have this setup correctly for an ASP.NET page? Thanks again for any
suggestions.
Michael




"Phillip Williams" wrote:

Michael,

If I understood your scenario correctly, then you have a master page (which
is a control on the page) that has a child user control that needs to
communicate data (users information that is generated perhaps after some user
input) to the parent control (the master page).

In such scenarios (of communicating data between 2 controls on a web form)
you need to look at using events. When the child user control finishes
collecting the user info, then you raise an event, that would be consumed by
the parent control (the master page), which in turn would display the data on
its control (or do whatever other processing required).

To understand how to raise an event from the child control and how to
consume it by the master page, review these articles on the MSDN:
http://msdn2.microsoft.com/en-us/library/17sde2xt.aspx

--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com


"Michael" wrote:

I have setup a public variable in the Master Page "code-behind-file". Now I
would like to set that value from the UserControl, but I can't seem to find a
way to do this. Does anyone have any ideas? I'm basically trying to set it up
so that I can keep the User infor (userid, ect) in the Masterpage so that
other pages can access it. Thanks for any ideas.
Michael

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