Hello everyone and thanks for your help in advance.  I am working on an 
application that uses a dropdownlist that allows the user to select a 
function.  Once selected, the browser is then redirected to the 
appropriate page.  This works fine in some pages, but in a few where I 
have used >net form validation, the javascript stops the redirection, 
instead requiring the required fields to be filled out before redirection 
can occur.  I am not sure how, or if there is a work-around for this.  
Any help would be greatly appreciated.  Thanks.

Perhaps I'm not fully understanding your question, but this behavior seems
to me to be by design.  The reason for the validation is to make sure that
required fields contain valid data before recording the data and
transferring server execution to the next page in the application.

It seems to me that you want to change the validation routine to consider
empty strings as valid or drop validation altogether if you want to go to
the next page regardless of whether "required" fields contain data or not.

I apologize if I did not understand your issue fully.

-----Original Message-----
From: Hugh McLaughlin [mailto:hugh@k...]
Sent: Thursday, August 22, 2002 8:00 PM
To: ASP+
Subject: [aspx] Form Validation Stops Redirect


Hello everyone and thanks for your help in advance.  I am working on an 
application that uses a dropdownlist that allows the user to select a 
function.  Once selected, the browser is then redirected to the 
appropriate page.  This works fine in some pages, but in a few where I 
have used >net form validation, the javascript stops the redirection, 
instead requiring the required fields to be filled out before redirection 
can occur.  I am not sure how, or if there is a work-around for this.  
Any help would be greatly appreciated.  Thanks.
---

ASP.NET 1.0 Namespace Reference with C#
http://www.wrox.com/acon11.asp?ISBN=1861007442

ASP.NET 1.0 Namespace Reference with VB.NET
http://www.wrox.com/acon11.asp?ISBN=1861007450

These books are a complete reference to the ASP.NET namespaces 
for developers who are already familiar with using ASP.NET. 
There is no trivial introductory material or useless .NET 
hype and the presentation of the namespaces, in an easy-to use 
alphabetical order ensures a user-friendly reference format.
We provide in-depth coverage of all the major ASP.NET classes, 
giving you those real-world tips that the documentation doesn't 
offer, and demonstrating complex techniques with simple 
examples.  

---

Thanks for your response Ron.  I wasn't very clear.  Here is the scenario:

The header for each page contains a dropdownlist with a "Go" button that 
allows the user to select a function and be redirected.  On some of the 
pages, I am using form field validation.  the problem arises when a user 
goes to a page, but then decides to not submit any data, instead 
selecting another page and function.  In this case, they are not trying 
to submit anything.  This could happen if the user simply went to the 
wrong page.  As you mentioned, it is truly "by design" behavior in one 
case, since the form was not filled out.  However, there was no attempt 
to submit the form data.  Instead, the user is simply trying to leave the 
page.  I suspect I will simply have to do server side validation, but was 
wondering if there was another method.
> Perhaps I'm not fully understanding your question, but this behavior 
seems
to me to be by design.  The reason for the validation is to make sure that
required fields contain valid data before recording the data and
transferring server execution to the next page in the application.

It seems to me that you want to change the validation routine to consider
empty strings as valid or drop validation altogether if you want to go to
the next page regardless of whether "required" fields contain data or not.

I apologize if I did not understand your issue fully.

-----Original Message-----
From: Hugh McLaughlin [mailto:hugh@k...]
Sent: Thursday, August 22, 2002 8:00 PM
To: ASP+
Subject: [aspx] Form Validation Stops Redirect


Hello everyone and thanks for your help in advance.  I am working on an 
application that uses a dropdownlist that allows the user to select a 
function.  Once selected, the browser is then redirected to the 
appropriate page.  This works fine in some pages, but in a few where I 
have used >net form validation, the javascript stops the redirection, 
instead requiring the required fields to be filled out before redirection 
can occur.  I am not sure how, or if there is a work-around for this.  
Any help would be greatly appreciated.  Thanks.
---

ASP.NET 1.0 Namespace Reference with C#
http://www.wrox.com/acon11.asp?ISBN=1861007442

ASP.NET 1.0 Namespace Reference with VB.NET
http://www.wrox.com/acon11.asp?ISBN=1861007450

These books are a complete reference to the ASP.NET namespaces 
for developers who are already familiar with using ASP.NET. 
There is no trivial introductory material or useless .NET 
hype and the presentation of the namespaces, in an easy-to use 
alphabetical order ensures a user-friendly reference format.
We provide in-depth coverage of all the major ASP.NET classes, 
giving you those real-world tips that the documentation doesn't 
offer, and demonstrating complex techniques with simple 
examples.  

---

Perhaps it's just the opinion of a humble .NET neophyte, but I think this is
fit for server side validation.  The redirection has to be processed by the
server returning a page anyway, and generally ASP.NET tries to handle
everything with server side processing.

To handle the redirection in the code behind page, you can still use
Response.Redirect("url") just like old school ASP, or you can use
Server.Transfer("url"), which seems to be more .NET savvy than
Response.Redirect.

-----Original Message-----
From: Hugh McLaughlin [mailto:hugh@k...]
Sent: Friday, August 23, 2002 1:15 PM
To: ASP+
Subject: [aspx] RE: Form Validation Stops Redirect


Thanks for your response Ron.  I wasn't very clear.  Here is the scenario:

The header for each page contains a dropdownlist with a "Go" button that 
allows the user to select a function and be redirected.  On some of the 
pages, I am using form field validation.  the problem arises when a user 
goes to a page, but then decides to not submit any data, instead 
selecting another page and function.  In this case, they are not trying 
to submit anything.  This could happen if the user simply went to the 
wrong page.  As you mentioned, it is truly "by design" behavior in one 
case, since the form was not filled out.  However, there was no attempt 
to submit the form data.  Instead, the user is simply trying to leave the 
page.  I suspect I will simply have to do server side validation, but was 
wondering if there was another method.
> Perhaps I'm not fully understanding your question, but this behavior 
seems
to me to be by design.  The reason for the validation is to make sure that
required fields contain valid data before recording the data and
transferring server execution to the next page in the application.

It seems to me that you want to change the validation routine to consider
empty strings as valid or drop validation altogether if you want to go to
the next page regardless of whether "required" fields contain data or not.

I apologize if I did not understand your issue fully.

-----Original Message-----
From: Hugh McLaughlin [mailto:hugh@k...]
Sent: Thursday, August 22, 2002 8:00 PM
To: ASP+
Subject: [aspx] Form Validation Stops Redirect


Hello everyone and thanks for your help in advance.  I am working on an 
application that uses a dropdownlist that allows the user to select a 
function.  Once selected, the browser is then redirected to the 
appropriate page.  This works fine in some pages, but in a few where I 
have used >net form validation, the javascript stops the redirection, 
instead requiring the required fields to be filled out before redirection 
can occur.  I am not sure how, or if there is a work-around for this.  
Any help would be greatly appreciated.  Thanks.
---

ASP.NET 1.0 Namespace Reference with C#
http://www.wrox.com/acon11.asp?ISBN=1861007442

ASP.NET 1.0 Namespace Reference with VB.NET
http://www.wrox.com/acon11.asp?ISBN=1861007450

These books are a complete reference to the ASP.NET namespaces 
for developers who are already familiar with using ASP.NET. 
There is no trivial introductory material or useless .NET 
hype and the presentation of the namespaces, in an easy-to use 
alphabetical order ensures a user-friendly reference format.
We provide in-depth coverage of all the major ASP.NET classes, 
giving you those real-world tips that the documentation doesn't 
offer, and demonstrating complex techniques with simple 
examples.  

---
---

ASP.NET 1.0 Namespace Reference with C#
http://www.wrox.com/acon11.asp?ISBN=1861007442

ASP.NET 1.0 Namespace Reference with VB.NET
http://www.wrox.com/acon11.asp?ISBN=1861007450

These books are a complete reference to the ASP.NET namespaces 
for developers who are already familiar with using ASP.NET. 
There is no trivial introductory material or useless .NET 
hype and the presentation of the namespaces, in an easy-to use 
alphabetical order ensures a user-friendly reference format.
We provide in-depth coverage of all the major ASP.NET classes, 
giving you those real-world tips that the documentation doesn't 
offer, and demonstrating complex techniques with simple 
examples.  

---

'Hugh McLaughlin', I think you can just ignore what 'Lindahl, Ron' have 
said, because I dun think he fully understood your question.

Consider this:
On some webpages, the author uses a DropDownList to redirect the user to 
another page.
Some (not ASP.NET) people just use client-side JavaScript to accomplish 
this, whereas in your case, your webpage do a post-back, and your code on 
the server side do the page redirect.

If I am not wrong, you have a 'Go' Button beside the DropDownList on your 
webpage. After the user have selected a item in the DropDownList, he has 
to click on the 'Go' Button.

Since you are using a 'Go' button, all that is needed to solve your 
problem is to set its 'Cause Validation' property to 'False'.

Correct me if I am wrong.


Previous message:
> Hello everyone and thanks for your help in advance.  I am working on an 
a> pplication that uses a dropdownlist that allows the user to select a 
f> unction.  Once selected, the browser is then redirected to the 
a> ppropriate page.  This works fine in some pages, but in a few where I 
h> ave used >net form validation, the javascript stops the redirection, 
i> nstead requiring the required fields to be filled out before 
redirection 
c> an occur.  I am not sure how, or if there is a work-around for this.  
A> ny help would be greatly appreciated.  Thanks.

Hugh, in case you dun know, you dun even need to have the 'Go' button on 
your webpage just to do a page post-back.

You can just set the DropDownList's property 'AutoPostBack' to 'True'.
So when the user select an item from the DropDownList, the DropDownList 
will cause a page post-back and its SelectedIndexChanged event will be 
triggered.

Here is a sample code:
Private Sub DropDownList1_SelectedIndexChanged(ByVal sender As 
System.Object, ByVal e As System.EventArgs) Handles 
DropDownList1.SelectedIndexChanged
    Response.Redirect("WebForm" & DropDownList1.SelectedItem.Value 
& ".aspx")
End Sub


You can look in the .net Documentation for more info on 'AutoPostBack'.


Previous message:
> Hello everyone and thanks for your help in advance.  I am working on an 
a> pplication that uses a dropdownlist that allows the user to select a 
f> unction.  Once selected, the browser is then redirected to the 
a> ppropriate page.  This works fine in some pages, but in a few where I 
h> ave used >net form validation, the javascript stops the redirection, 
i> nstead requiring the required fields to be filled out before 
redirection 
c> an occur.  I am not sure how, or if there is a work-around for this.  
A> ny help would be greatly appreciated.  Thanks.

Thanks Mingkun.  This is exactly what I was looking for and it worked 
perfectly.  Thanks again.

> 'Hugh McLaughlin', I think you can just ignore what 'Lindahl, Ron' have 
s> aid, because I dun think he fully understood your question.

> Consider this:
O> n some webpages, the author uses a DropDownList to redirect the user 
to 
a> nother page.
S> ome (not ASP.NET) people just use client-side JavaScript to accomplish 
t> his, whereas in your case, your webpage do a post-back, and your code 
on 
t> he server side do the page redirect.

> If I am not wrong, you have a 'Go' Button beside the DropDownList on 
your 
w> ebpage. After the user have selected a item in the DropDownList, he 
has 
t> o click on the 'Go' Button.

> Since you are using a 'Go' button, all that is needed to solve your 
p> roblem is to set its 'Cause Validation' property to 'False'.

> Correct me if I am wrong.

> 
P> revious message:
>>  Hello everyone and thanks for your help in advance.  I am working on 
an 
a> > pplication that uses a dropdownlist that allows the user to select a 
f> > unction.  Once selected, the browser is then redirected to the 
a> > ppropriate page.  This works fine in some pages, but in a few where 
I 
h> > ave used >net form validation, the javascript stops the redirection, 
i> > nstead requiring the required fields to be filled out before 
r> edirection 
c> > an occur.  I am not sure how, or if there is a work-around for 
this.  
A> > ny help would be greatly appreciated.  Thanks.