Hello, All,
I just want to know that generally how to get the HtmlForm element in an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu
14  8140 
You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor http://staff.develop.com/ballen Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Hello Brock, Thank you!!:) You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
However, is there any alternative approach which needs not to do hard coding?
I mean how to get the Form element at runtime without the declaration of
HtmlForm member? You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Try:
Page_Load
'vb.net
dim form as HtmlForm = ctype(FindControl("form1"), HtmlForm)
//c#
HtmlForm form = (HtmlForm)FindControl("form1");
end
where "form1" is the id you've given to your form tag (ie, <form id="form1"
runat="server" > )
If that's still to "hard-coded" for you...you'll need to loop through the
page controls and look for the control
public function GetPageForm(byval parentControl as Control) as HtmlForm
for each child as Control in parentControl.Controls
if typeof child is HtmlForm
return ctype(child, htmlForm)
end if
next
return nothing
end function
you might need to make the above code recursive though...if the htmlform is
embedded (unlikely)..
anyways...seems like overkill...Brock's suggestion should be the right way
to go unless there are very special circumstances..
Karl
P.S. - Hi Brock :)
--
MY ASP.Net tutorials http://www.openmymind.net/ - New and Improved (yes, the popup is annoying) http://www.openmymind.net/faq.aspx - unofficial newsgroup FAQ (more to
come!)
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com... However, is there any alternative approach which needs not to do hard
coding?
I mean how to get the Form element at runtime without the declaration of
HtmlForm member? You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Hello Karl,
Nice approach;) It seems that I have to use the GetPageForm function provided
by you, as the form's id is not deterministic at run time.
Thank you! Try:
Page_Load
'vb.net
dim form as HtmlForm = ctype(FindControl("form1"), HtmlForm)
//c#
HtmlForm form = (HtmlForm)FindControl("form1");
end
where "form1" is the id you've given to your form tag (ie, <form
id="form1" runat="server" > )
If that's still to "hard-coded" for you...you'll need to loop through
the page controls and look for the control
public function GetPageForm(byval parentControl as Control) as
HtmlForm
for each child as Control in parentControl.Controls
if typeof child is HtmlForm
return ctype(child, htmlForm)
end if
next
return nothing
end function
you might need to make the above code recursive though...if the
htmlform is embedded (unlikely)..
anyways...seems like overkill...Brock's suggestion should be the right
way to go unless there are very special circumstances..
Karl
P.S. - Hi Brock :)
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
However, is there any alternative approach which needs not to do hard
coding?
I mean how to get the Form element at runtime without the declaration
of
HtmlForm member? You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen
Hello, All,
I just want to know that generally how to get the HtmlForm element
in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
I was puzzled that why not the System.Web.UI.Control / Page class provide
such a method like FindForm() which is provided in System.Windows.Forms.Control
class, as the Form element is specific and unlackable to all ASP.NET Web
Forms. It's indeed a little bit unconvenient without such a method or property
when writing some ASP.NET code:( Hello Karl,
Nice approach;) It seems that I have to use the GetPageForm function
provided
by you, as the form's id is not deterministic at run time.
Thank you! Try:
Page_Load
'vb.net
dim form as HtmlForm = ctype(FindControl("form1"), HtmlForm)
//c#
HtmlForm form = (HtmlForm)FindControl("form1");
end
where "form1" is the id you've given to your form tag (ie, <form
id="form1" runat="server" > )
If that's still to "hard-coded" for you...you'll need to loop through
the page controls and look for the control
public function GetPageForm(byval parentControl as Control) as
HtmlForm
for each child as Control in parentControl.Controls
if typeof child is HtmlForm
return ctype(child, htmlForm)
end if
next
return nothing
end function
you might need to make the above code recursive though...if the
htmlform is embedded (unlikely)..
anyways...seems like overkill...Brock's suggestion should be the
right way to go unless there are very special circumstances..
Karl
P.S. - Hi Brock :)
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
However, is there any alternative approach which needs not to do
hard
coding?
I mean how to get the Form element at runtime without the
declaration
of
HtmlForm member?
You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen
> Hello, All,
>
> I just want to know that generally how to get the HtmlForm element
> in
> an
> ASP.NET Page?
> Can anybody help? Please:)
> Best regards,
> Laser Lu.
Laser:
HtmlForm isn't 100% necessary...you can easily have an ASP:Label in a page
without a form...there are other controls which don't require a form also,
though most functionality does require it.
by the way, in the future youshould try to avoid cross-posting to so many
newsgroups...
Karl
--
MY ASP.Net tutorials http://www.openmymind.net/ - New and Improved (yes, the popup is annoying) http://www.openmymind.net/faq.aspx - unofficial newsgroup FAQ (more to
come!)
"Laser Lu" <la******@hotmail.com> wrote in message
news:72********************@news.microsoft.com... I was puzzled that why not the System.Web.UI.Control / Page class provide
such a method like FindForm() which is provided in
System.Windows.Forms.Control class, as the Form element is specific and
unlackable to all ASP.NET Web Forms. It's indeed a little bit unconvenient
without such a method or property when writing some ASP.NET code:(
Hello Karl,
Nice approach;) It seems that I have to use the GetPageForm function
provided
by you, as the form's id is not deterministic at run time.
Thank you! Try:
Page_Load
'vb.net
dim form as HtmlForm = ctype(FindControl("form1"), HtmlForm)
//c#
HtmlForm form = (HtmlForm)FindControl("form1");
end
where "form1" is the id you've given to your form tag (ie, <form
id="form1" runat="server" > )
If that's still to "hard-coded" for you...you'll need to loop through
the page controls and look for the control
public function GetPageForm(byval parentControl as Control) as
HtmlForm
for each child as Control in parentControl.Controls
if typeof child is HtmlForm
return ctype(child, htmlForm)
end if
next
return nothing
end function
you might need to make the above code recursive though...if the
htmlform is embedded (unlikely)..
anyways...seems like overkill...Brock's suggestion should be the
right way to go unless there are very special circumstances..
Karl
P.S. - Hi Brock :)
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
However, is there any alternative approach which needs not to do
hard
coding?
I mean how to get the Form element at runtime without the
declaration
of
HtmlForm member?
> You need to declare a field in your code behind for the form:
>
> protected System.Web.UI.HtmlControls.HtmlForm Form1;
>
> Use Form1 or whatever ID you've assigned to it in the ASPX.
>
> -Brock
> DevelopMentor
> http://staff.develop.com/ballen
>> Hello, All,
>>
>> I just want to know that generally how to get the HtmlForm element
>> in
>> an
>> ASP.NET Page?
>> Can anybody help? Please:)
>> Best regards,
>> Laser Lu.
you can use the Page.FindControl method, e.g.
System.Web.UI.HtmlControls.HtmlForm form = Page.FindControl("Form1") as
System.Web.UI.HtmlControls.HtmlForm;
--
HTH
Ollie Riches http://www.phoneanalyser.net
Disclaimer: Opinions expressed in this forum are my own, and not
representative of my employer.
I do not answer questions on behalf of my employer. I'm just a programmer
helping programmers.
"Laser Lu" <la******@hotmail.com> wrote in message
news:49********************@news.microsoft.com... Hello, All,
I just want to know that generally how to get the HtmlForm element in an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Ok, Karl, thank you:)
I'll remember not to cross-posting to too many newsgroups from now on:) Laser:
HtmlForm isn't 100% necessary...you can easily have an ASP:Label in a
page
without a form...there are other controls which don't require a form
also,
though most functionality does require it.
by the way, in the future youshould try to avoid cross-posting to so
many newsgroups...
Karl
"Laser Lu" <la******@hotmail.com> wrote in message
news:72********************@news.microsoft.com...
I was puzzled that why not the System.Web.UI.Control / Page class
provide such a method like FindForm() which is provided in
System.Windows.Forms.Control class, as the Form element is specific
and unlackable to all ASP.NET Web Forms. It's indeed a little bit
unconvenient without such a method or property when writing some
ASP.NET code:(
Hello Karl,
Nice approach;) It seems that I have to use the GetPageForm function
provided
by you, as the form's id is not deterministic at run time.
Thank you!
Try:
Page_Load
'vb.net
dim form as HtmlForm = ctype(FindControl("form1"), HtmlForm)
//c#
HtmlForm form = (HtmlForm)FindControl("form1");
end
where "form1" is the id you've given to your form tag (ie, <form
id="form1" runat="server" > )
If that's still to "hard-coded" for you...you'll need to loop
through
the page controls and look for the control
public function GetPageForm(byval parentControl as Control) as
HtmlForm
for each child as Control in parentControl.Controls
if typeof child is HtmlForm
return ctype(child, htmlForm)
end if
next
return nothing
end function
you might need to make the above code recursive though...if the
htmlform is embedded (unlikely)..
anyways...seems like overkill...Brock's suggestion should be the
right way to go unless there are very special circumstances..
Karl
P.S. - Hi Brock :)
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
> However, is there any alternative approach which needs not to do
> hard
> coding?
> I mean how to get the Form element at runtime without the
> declaration
> of
> HtmlForm member?
>> You need to declare a field in your code behind for the form:
>>
>> protected System.Web.UI.HtmlControls.HtmlForm Form1;
>>
>> Use Form1 or whatever ID you've assigned to it in the ASPX.
>>
>> -Brock
>> DevelopMentor
>> http://staff.develop.com/ballen
>>> Hello, All,
>>>
>>> I just want to know that generally how to get the HtmlForm
>>> element
>>> in
>>> an
>>> ASP.NET Page?
>>> Can anybody help? Please:)
>>> Best regards,
>>> Laser Lu.
You can iterate the controls on the page to return the form control. This
is a recusive call to step through each Control in the ControlCollection
looking for the HtmlForm.
public static HtmlForm GetForm( ControlCollection controls )
{
HtmlForm form = null;
for( int i = 0 ; i < controls.Count ; i++ )
{
if ( controls[i] is HtmlForm ) return controls[i] as HtmlForm;
if ( controls[i].HasControls() )
{
form = GetForm( controls[i].Controls );
if ( form != null ) return form;
}
return null;
}
Since the HtmlForm is typically a top level control, performance isn't too
terribly bad. I didn't actually test this code, but it should work similiar
to this.
HtmlForm myForm = GetForm( Page.Controls );
HTH,
bill
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com... However, is there any alternative approach which needs not to do hard
coding? I mean how to get the Form element at runtime without the declaration of
HtmlForm member?
You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
In your code behind, it is "this" or "Me".
--
2004 and 2005 Microsoft MVP C#
Robbe Morris http://www.robbemorris.com http://www.masterado.net/home/listings.aspx
"Laser Lu" <la******@hotmail.com> wrote in message
news:49********************@news.microsoft.com... Hello, All,
I just want to know that generally how to get the HtmlForm element in an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Hello Robbe Morris,
Maybe I didn't say it clearly. The object I want to get is of type HtmlForm,
which is exactly refer to the HTML <FORM> element in the Web Page, but not
the Page object itself. So here, I suppose, it is not 'this' or 'me' in the
code behind:) However, thanks for your reply:) In your code behind, it is "this" or "Me".
"Laser Lu" <la******@hotmail.com> wrote in message
news:49********************@news.microsoft.com...
Hello, All,
I just want to know that generally how to get the HtmlForm element in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Hello William, thank you:)
As you said, since the HtmlForm element is typically a top level control,
or not-too-deep level control, the algorithm taken for finding the Form element
should search horizontally through a topper level first and then its child
levels, not deeply search the children first using function recursion. Do
you know what I mean? Am I right? :) You can iterate the controls on the page to return the form control.
This is a recusive call to step through each Control in the
ControlCollection looking for the HtmlForm.
public static HtmlForm GetForm( ControlCollection controls )
{
HtmlForm form = null;
for( int i = 0 ; i < controls.Count ; i++ )
{
if ( controls[i] is HtmlForm ) return controls[i] as HtmlForm;
if ( controls[i].HasControls() )
{
form = GetForm( controls[i].Controls );
if ( form != null ) return form;
}
return null;
}
Since the HtmlForm is typically a top level control, performance isn't
too terribly bad. I didn't actually test this code, but it should
work similiar to this.
HtmlForm myForm = GetForm( Page.Controls );
HTH,
bill
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
However, is there any alternative approach which needs not to do hard
coding?
I mean how to get the Form element at runtime without the declaration
of HtmlForm member?
You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen
Hello, All,
I just want to know that generally how to get the HtmlForm element
in
an
ASP.NET Page?
Can anybody help? Please:)
Best regards,
Laser Lu.
Excellent point! I missed that. The algorithm below will do a depth first
search. Normally this doesn't matter as the Page.Controls looks like
LiteralControl
HtmlForm
LiteralControl
The first literal control will have no children, nor will the third control.
So you will take two iterations to find the HtmlForm.
bill
"Laser Lu" <la******@hotmail.com> wrote in message
news:12*********************@news.microsoft.com... Hello William, thank you:)
As you said, since the HtmlForm element is typically a top level control,
or not-too-deep level control, the algorithm taken for finding the Form
element should search horizontally through a topper level first and then its child
levels, not deeply search the children first using function recursion. Do
you know what I mean? Am I right? :)
You can iterate the controls on the page to return the form control.
This is a recusive call to step through each Control in the
ControlCollection looking for the HtmlForm.
public static HtmlForm GetForm( ControlCollection controls )
{
HtmlForm form = null;
for( int i = 0 ; i < controls.Count ; i++ )
{
if ( controls[i] is HtmlForm ) return controls[i] as HtmlForm;
if ( controls[i].HasControls() )
{
form = GetForm( controls[i].Controls );
if ( form != null ) return form;
}
return null;
}
Since the HtmlForm is typically a top level control, performance isn't
too terribly bad. I didn't actually test this code, but it should
work similiar to this.
HtmlForm myForm = GetForm( Page.Controls );
HTH,
bill
"Laser Lu" <la******@hotmail.com> wrote in message
news:68********************@news.microsoft.com...
However, is there any alternative approach which needs not to do hard
coding?
I mean how to get the Form element at runtime without the declaration
of HtmlForm member?
You need to declare a field in your code behind for the form:
protected System.Web.UI.HtmlControls.HtmlForm Form1;
Use Form1 or whatever ID you've assigned to it in the ASPX.
-Brock
DevelopMentor
http://staff.develop.com/ballen
> Hello, All,
>
> I just want to know that generally how to get the HtmlForm element
> in
> an
> ASP.NET Page?
> Can anybody help? Please:)
> Best regards,
> Laser Lu.
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Can anybody help? Please:)
Best regards,
Laser Lu
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