Hey
asp.net 2.0 (C#)
Retriving value:
In my webpage, I need to retrieve a value from the URL, this is a parameter
stored in the url, like this: www.helloworld.com?testid=34
what C# code shall I use to retrive this testid value?
Setting value:
Another thing I'm wondering about is what C# code shall I use to set the
testid value to the URL, lets say I want to add the testid parameter to the
URL, what C# code shall I use to do that?
Jeff 3 1180
This is a QueryString variable so you will access it through the QueryString
collection
You'll need to test for a null value to start with before assigning it
if(Request.Quer yString["testid"] != null)
something =
Convert.ToInt32 (Request.QueryS tring["testid"].ToString());
The value of the testid is probably a number, so you'll need to convert
it from a string into something else. I tend to add the ToString() onto a
lot of collection operations simply to be sure. You never know when you'll
have a collection that will be a collection of objects instead of strings
and will throw an error. Also, this code doesn't test to ensure that it's a
valid integer varable before it tries the convert function.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP - FrontPage
"Jeff" <it_consultant1 @NO_SPAM.hotmai l.comwrote in message
news:%2******** ********@TK2MSF TNGP05.phx.gbl. ..
Hey
asp.net 2.0 (C#)
Retriving value:
In my webpage, I need to retrieve a value from the URL, this is a
parameter stored in the url, like this: www.helloworld.com?testid=34
what C# code shall I use to retrive this testid value?
Setting value:
Another thing I'm wondering about is what C# code shall I use to set the
testid value to the URL, lets say I want to add the testid parameter to
the URL, what C# code shall I use to do that?
Jeff
thanks, just another thing I'm wondering about :
How can I set a value in the URL, lets say I want to set the testid in this
URL: www.helloworld.com?testid=34 to another value?
I tryed using Request.QuerySt ring.Set, but get an error saying the
collection is readonly... maybe it can't be done?.. Maybe I instead should
use the session object. I'm trying to send value from 1 user control to a
group of other user control (how many isn't known before runtime)
"Mark Fitzpatrick" <ma******@fitzm e.comwrote in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..
This is a QueryString variable so you will access it through the
QueryString collection
You'll need to test for a null value to start with before assigning it
if(Request.Quer yString["testid"] != null)
something =
Convert.ToInt32 (Request.QueryS tring["testid"].ToString());
The value of the testid is probably a number, so you'll need to convert
it from a string into something else. I tend to add the ToString() onto a
lot of collection operations simply to be sure. You never know when you'll
have a collection that will be a collection of objects instead of strings
and will throw an error. Also, this code doesn't test to ensure that it's
a valid integer varable before it tries the convert function.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP - FrontPage
"Jeff" <it_consultant1 @NO_SPAM.hotmai l.comwrote in message
news:%2******** ********@TK2MSF TNGP05.phx.gbl. ..
>Hey
asp.net 2.0 (C#)
Retriving value: In my webpage, I need to retrieve a value from the URL, this is a parameter stored in the url, like this: www.helloworld.com?testid=34 what C# code shall I use to retrive this testid value?
Setting value: Another thing I'm wondering about is what C# code shall I use to set the testid value to the URL, lets say I want to add the testid parameter to the URL, what C# code shall I use to do that?
Jeff
Unfortunately it's not possible to alter the querystring variables. You
can't change the variable since you would have to change the hyperlink
itself. The only thing you can do is to create a new link with the new id.
The session object does have a bit of a performance hit so that's something
to keep in mind.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP - FrontPage
"Jeff" <it_consultant1 @NO_SPAM.hotmai l.comwrote in message
news:u6******** ********@TK2MSF TNGP06.phx.gbl. ..
thanks, just another thing I'm wondering about:
How can I set a value in the URL, lets say I want to set the testid in
this URL: www.helloworld.com?testid=34 to another value?
I tryed using Request.QuerySt ring.Set, but get an error saying the
collection is readonly... maybe it can't be done?.. Maybe I instead should
use the session object. I'm trying to send value from 1 user control to a
group of other user control (how many isn't known before runtime)
"Mark Fitzpatrick" <ma******@fitzm e.comwrote in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..
>This is a QueryString variable so you will access it through the QueryString collection
You'll need to test for a null value to start with before assigning it
if(Request.Quer yString["testid"] != null) something = Convert.ToInt3 2(Request.Query String["testid"].ToString());
The value of the testid is probably a number, so you'll need to convert it from a string into something else. I tend to add the ToString() onto a lot of collection operations simply to be sure. You never know when you'll have a collection that will be a collection of objects instead of strings and will throw an error. Also, this code doesn't test to ensure that it's a valid integer varable before it tries the convert function.
Hope this helps, Mark Fitzpatrick Microsoft MVP - FrontPage
"Jeff" <it_consultant1 @NO_SPAM.hotmai l.comwrote in message news:%2******* *********@TK2MS FTNGP05.phx.gbl ...
>>Hey
asp.net 2.0 (C#)
Retriving value: In my webpage, I need to retrieve a value from the URL, this is a parameter stored in the url, like this: www.helloworld.com?testid=34 what C# code shall I use to retrive this testid value?
Setting value: Another thing I'm wondering about is what C# code shall I use to set the testid value to the URL, lets say I want to add the testid parameter to the URL, what C# code shall I use to do that?
Jeff This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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