By using this site, you agree to our updated Privacy Policy and our Terms of Use. Manage your Cookies Settings.
428,839 Members | 2,270 Online
Bytes IT Community
+ Ask a Question
Need help? Post your question and get tips & solutions from a community of 428,839 IT Pros & Developers. It's quick & easy.

HowTo: get request.form[i].name

P: n/a
Hello,

HowTo: catch name/value pairs from request.form?

My viewstate shows:
"__VIEWSTATE=..&111=5.."
I want to get this pairs of IDs/names [111] and values [5].
But because the DropDownList ist dynamically created I don't know the
name/ID of the created list. I can parse the viewState string to get the
related name/value pairs, but I think there will be a more simple way
provided by the request-object??

wkr: Wilhelm Pieper
Nov 17 '05 #1
Share this Question
Share on Google+
5 Replies


P: n/a
Hi,

I donít know how you get the data from __viewstate field. This data is
handling by the LosFormatter class. This class serializes the values of
the controls into string presentation. The data format in the
__viewstate isnít in key=value format.

Anyway you can get data from the Form Collection:
string x = Request.form["myTextControl"];

Natty Gur, CTO
Dao2Com Ltd.
28th Baruch Hirsch st. Bnei-Brak
Israel , 51114

Phone Numbers:
Office: +972-(0)3-5786668
Fax: +972-(0)3-5703475
Mobile: +972-(0)58-888377

Know the overall picture
*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!
Nov 17 '05 #2

P: n/a

"Natty Gur" <na***@dao2com.com> schrieb im Newsbeitrag
news:eh**************@tk2msftngp13.phx.gbl...

I don't know how you get the data from __viewstate field. .. Debugger :-)
Anyway you can get data from the Form Collection:
string x = Request.form["myTextControl"];

But I don't know the name "myTextControl".
When getting the request.forms string I loop through this string and get
the values I'm looking for but not the names related to this items:
for (int i=0;i<Request.Form.Count;i++)

Double dTmp = Convert.ToDouble(Request.Form[i].ToString());
if (dTmp > 0) ..

Nov 17 '05 #3

P: n/a
OK,

1)using debugger nice :-).

2)What you really after? viewstate will return the last state of the
control on the server while Form collection holds the values that sends
from the client.

Any way if you want you can:
1) Use the LosFormatter class to get the cached data from the
__viewstate field.
2) Loop through the form elements (as you already did) to get the data
Send from the client
3) Loop through the WebForm controls to get their current values (the
cached data and the one that changed by the user).

Natty Gur, CTO
Dao2Com Ltd.
28th Baruch Hirsch st. Bnei-Brak
Israel , 51114

Phone Numbers:
Office: +972-(0)3-5786668
Fax: +972-(0)3-5703475
Mobile: +972-(0)58-888377

Know the overall picture
*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!
Nov 17 '05 #4

P: n/a
Hello Natty,

thanks to your reply.
Because your solution looks a little bit more code I tried
string[] strRequest = Request.Form.ToString().Split('&');

This returns all pairs I'm interested in in an easy to parse array like:
"112=5", "113=4" and so on.
"Natty Gur" <na***@dao2com.com> schrieb im Newsbeitrag
news:#e**************@TK2MSFTNGP10.phx.gbl...
...
1) Use the LosFormatter class to get the cached data from the
__viewstate field. Isn't this the same like Request.Form.ToString()??
2) Loop through the form elements (as you already did) to get the data
Send from the client
3) Loop through the WebForm controls to get their current values (the
cached data and the one that changed by the user).

I could (probably) do, but I'm not shure with this because my controls are
added on the fly.
So they may be not part of the controls collection.

wkr: Wilhelm Pieper
Nov 17 '05 #5

P: n/a
I think you have a fundimental misunderstanding of .Net

you DON"T need access to viewstate. The value of your control is
automatically restored in your application on post-back. You query it's
value then.

These three properties should give you what you want

"DropDownControl.SelectedValue"
"DropDownControl.SelectedIndex"
"DropDownControl.SelectedItem"

..Net removes you from dealing with the behind the scene plumbing of the
web - GONE are the days of splitting on "&" etc etc etc.
(unless you are a PHP pup (doh!))
"Wilhelm Pieper" <w_******@web.de> wrote in message
news:ez**************@TK2MSFTNGP12.phx.gbl...
Hello,

HowTo: catch name/value pairs from request.form?

My viewstate shows:
"__VIEWSTATE=..&111=5.."
I want to get this pairs of IDs/names [111] and values [5].
But because the DropDownList ist dynamically created I don't know the
name/ID of the created list. I can parse the viewState string to get the
related name/value pairs, but I think there will be a more simple way
provided by the request-object??

wkr: Wilhelm Pieper

Nov 17 '05 #6

This discussion thread is closed

Replies have been disabled for this discussion.