i place a hyperlink at my master page,and i wish to change the text of the hyperlink when user login into the system.

all my page are running at the content holder.

can someone show me the example for the code in vb.net? including the declaration and everything.

thanks

 Hi enghsiang,

Do you mind that I use a LinkButton instead of an html hyperlink? This is easier to reference etc.

Ok, I have this on my masterpage:

<asp:LinkButton ID="LinkButton1" PostBackUrl="http://www.google.be" runat="server">LinkButton</asp:LinkButton>

Then, when a childpage loads, I will change the url of the linkButton:
The following happens in the load event of a childpage:

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
	Dim dummy As LinkButton
	dummy = CType(Master.FindControl("LinkButton1"), LinkButton)
	dummy.PostBackUrl = "http://www.asp.net"
  End Sub

 
 If you have questions/remarks/comments, please do so!
Kind regards,
Wim
 

deblendewim:

 Hi enghsiang,

Do you mind that I use a LinkButton instead of an html hyperlink? This is easier to reference etc.

 

Ok, I have this on my masterpage:

 

<asp:LinkButton ID="LinkButton1" PostBackUrl="http://www.google.be" runat="server">LinkButton</asp:LinkButton>

 

Then, when a childpage loads, I will change the url of the linkButton:
The following happens in the load event of a childpage:

 

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
	Dim dummy As LinkButton
	dummy = CType(Master.FindControl("LinkButton1"), LinkButton)
	dummy.PostBackUrl = "http://www.asp.net"
  End Sub

 If you have questions/remarks/comments, please do so!
Kind regards,
Wim
 

Wim,thanks for your reply

actually i also manage to change the hyperlink text already.but just i face another problem.

the problem is,as i hav lot of page in my system,once i redirect to other page ( which the page in content holder),the hyperlink at masterpage turn back to normal. any idea?

Hi,

Hmm, let me try to understand what you are trying to accomplish .....

So, you have a HyperLink on the masterpage. A user logs in, and when this happens, the link should have a changed text depending on the user who logged in.

Am I right so far?

Well, the hyperlink's text will get lost on redirection because the text was changed at runtime. Hmmm, viewstate can persist it, but only on the same page I guess (I mean, when a postback occurs).
I would suggest the following (not sure if it's a best practice because I'm no masterpage guru).

1. Your hyperlink is on the masterpage
2. once a user log's in, create a sessionvariable to store the custom text in.
3. in the Load of the masterpage, do the following

If Not Session("mySessionVariable") Is Nothing Then
  Me.hyperLink1.Text = "blabla" & Session("UserInformation") & "whatEverYouWantToCallIt"
End If

 So in words ....

When a user log's in, a sessionVariable is filled. Now, whenever you redirect between content pages, the load of the masterpage will be triggered. Then the code will do: Is there a sessionVariable? If yes, then my hyperlink must change.

Depending on how you wish to change the hyperlink's text you might not need a sessionVariable (which is always better!). For example: Do you want the hyperlinkText to be something like "Logout here" & UserName, then in the load of the masterpage you could do something like: Me.hyperLink1.Text = "Logout here" & User.Identity.Name.

Hope this helps!
Wim
 

deblendewim:

Hi,

Hmm, let me try to understand what you are trying to accomplish .....

So, you have a HyperLink on the masterpage. A user logs in, and when this happens, the link should have a changed text depending on the user who logged in.

Am I right so far?

 

Well, the hyperlink's text will get lost on redirection because the text was changed at runtime. Hmmm, viewstate can persist it, but only on the same page I guess (I mean, when a postback occurs).
I would suggest the following (not sure if it's a best practice because I'm no masterpage guru).

1. Your hyperlink is on the masterpage
2. once a user log's in, create a sessionvariable to store the custom text in.
3. in the Load of the masterpage, do the following

 

If Not Session("mySessionVariable") Is Nothing Then
  Me.hyperLink1.Text = "blabla" & Session("UserInformation") & "whatEverYouWantToCallIt"
End If

 

 So in words ....

When a user log's in, a sessionVariable is filled. Now, whenever you redirect between content pages, the load of the masterpage will be triggered. Then the code will do: Is there a sessionVariable? If yes, then my hyperlink must change.

Depending on how you wish to change the hyperlink's text you might not need a sessionVariable (which is always better!). For example: Do you want the hyperlinkText to be something like "Logout here" & UserName, then in the load of the masterpage you could do something like: Me.hyperLink1.Text = "Logout here" & User.Identity.Name.

 

Hope this helps!
Wim
 

Actually what i wan is something like a mail box system:

1. the system will detect the database whether there are any new mail,then it will change the hyperlink text to maybe like : " 2 New Mail or 0 New Mail ".    and it will link the user to inbox when user click on it.

2. the hyperlink will only be visible when the user login into the system. i accomplish this by the example u giv to me,just some modification on it. thanks for the example.

so now,any idea on 1. ? where should i locate my code to check the database and change the hyperlink text?

hope to get your reply soon and thanks very much for your help.

enghsiang:

1. the system will detect the database whether there are any new mail,then it will change the hyperlink text to maybe like : " 2 New Mail or 0 New Mail ".    and it will link the user to inbox when user click on it.

Hey,

Hmm, that's indeed another problem.

Well, I can't give you an exact answer, but I'll try to give you some possible solutions ...

First you need to know how frequently you want the value to be updated. Do you want it to be real-time, or with intervals of 5 minutes?

I should set up a webservice. That webservice checkes for example the amount of mails for a specific user. So, you give the userName as parameter, (example: Bob) and the service returns the amount of mails (example: 3). Then you add a timer to your masterpage. Every time the timer ticks, you call the webservice, and update the Text-property of the HyperLink.

With this setup you can also call the service on other times. For instance when the user log's in, or when he presses Send/Recieve (or something like that) in the mailBox-system.

That's a way to go .... although I'm not sure it's very performant.

Maybe you should open a new thread with the specific question of how to "Detect database changes & update values on that".

Because I think a dataset is also capable of detecting database changes. Let's say you have a datatable where you inserted the emailAmount values. Then you could perform a check to see if the data is dirty (=changed). That could also be a condition to update the Text of the HyperLink.  But I'm not quite sure how to implement that into your solution. Maybe other know howto, or they can point you in the right direction.

Kind regards,
Wim

Wim, 

your suggestion is good. but i'm trying to reduce to loading process in my system.so currently i not considering the timer method. anyway,still thanks for your idea as it may be an extra option for me.

and also,i already open a new thread regarding the problem.

thanks