QueryString keys

[Alex]

I have a question about determining if one QueryString keys exists. The idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null, QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no value assigned to it. Any ideas?

Thanks,

Alex

[Mythran]

Private Function KeyInQuery(ByVa l Key As String) As Boolean
Dim keyName As String
Dim val As String

For i As Integer = 0 To Request.QuerySt ring.Count - 1
val = Request.QuerySt ring.Item(i)

If Not val Is Nothing AndAlso val.ToLower() = Key.ToLower()
Return True
End If
Next

Return False
End Function

Try the above function :)

Mythran
"Alex" <al**@nospam.ne t> wrote in message
news:u0******** ******@TK2MSFTN GP10.phx.gbl...
I have a question about determining if one QueryString keys exists. The idea
is, if this key exists, than its presence is enough to indicate that its value is
true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that
client exists, so its value is true. In the code behind, I can tell that client
exists using Request.QuerySt ring.Keys.Count , which equals 1.
QueryString["client"] is null, QueryString.Key s[0] is null,
QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no
value assigned to it. Any ideas?

Thanks,

Alex

[Demetri]

I'm not sure I understand what the dilema is. If you can tell from Keys.Count
= 1 that the querystring has atleast one key and you can reference
QueryString["Client"] and determine if it is null or not then what is the
problem?

Besides, what good is a QueryString key with no value?

I think somehow your approach to produce a solution is flawed. Perhaps, more
information about what it is you are actually trying to accomplish? A little
more of a bigger picture?

-Demetri

"Alex" wrote:

I have a question about determining if one QueryString keys exists. The idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null, QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no value assigned to it. Any ideas?

Thanks,

Alex

[Greg Burns]

> Besides, what good is a QueryString key with no value?

I think he said he wants to use the key as a boolean flag. I've ran into
this myself before. Seems silly to pass a qs like client=true or
client=false, or client=1 and client=0, etc. When just passing client by
itself could represent "true" and no qs could represent "false".

my .02
Greg
"Demetri" <De*****@discus sions.microsoft .com> wrote in message
news:61******** *************** ***********@mic rosoft.com...

I'm not sure I understand what the dilema is. If you can tell from
Keys.Count
= 1 that the querystring has atleast one key and you can reference
QueryString["Client"] and determine if it is null or not then what is the
problem?

Besides, what good is a QueryString key with no value?

I think somehow your approach to produce a solution is flawed. Perhaps,
more
information about what it is you are actually trying to accomplish? A
little
more of a bigger picture?

-Demetri

"Alex" wrote:

I have a question about determining if one QueryString keys exists. The
idea is, if this key exists, than its presence is enough to indicate that
its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me
that client exists, so its value is true. In the code behind, I can tell
that client exists using Request.QuerySt ring.Keys.Count , which equals 1.
QueryString["client"] is null, QueryString.Key s[0] is null,
QueryString.Key s["client"] is null, Request.QuerySt ingText = "client",
ect.

I cannot seem to find a way to determine if a QuerySting exists when it
has no value assigned to it. Any ideas?

Thanks,

Alex

[Demetri]

Won't

if IsNull(Request. QueryString("Cl ient")) then
Return False
end if

Work?
"Mythran" wrote:

Private Function KeyInQuery(ByVa l Key As String) As Boolean
Dim keyName As String
Dim val As String

For i As Integer = 0 To Request.QuerySt ring.Count - 1
val = Request.QuerySt ring.Item(i)

If Not val Is Nothing AndAlso val.ToLower() = Key.ToLower()
Return True
End If
Next

Return False
End Function

Try the above function :)

Mythran
"Alex" <al**@nospam.ne t> wrote in message
news:u0******** ******@TK2MSFTN GP10.phx.gbl...
I have a question about determining if one QueryString keys exists. The idea
is, if this key exists, than its presence is enough to indicate that its value is
true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that
client exists, so its value is true. In the code behind, I can tell that client
exists using Request.QuerySt ring.Keys.Count , which equals 1.
QueryString["client"] is null, QueryString.Key s[0] is null,
QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no
value assigned to it. Any ideas?

Thanks,

Alex

[Alex]

Greg,

That is exactly what my aim is. Thanks for your input.

Akex

--
Alex Mueller
"Greg Burns" <greg_burns@DON T_SPAM_ME_hotma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

Besides, what good is a QueryString key with no value?

I think he said he wants to use the key as a boolean flag. I've ran into
this myself before. Seems silly to pass a qs like client=true or
client=false, or client=1 and client=0, etc. When just passing client by
itself could represent "true" and no qs could represent "false".

my .02
Greg
"Demetri" <De*****@discus sions.microsoft .com> wrote in message
news:61******** *************** ***********@mic rosoft.com...

I'm not sure I understand what the dilema is. If you can tell from
Keys.Count
= 1 that the querystring has atleast one key and you can reference
QueryString["Client"] and determine if it is null or not then what is the problem?

Besides, what good is a QueryString key with no value?

I think somehow your approach to produce a solution is flawed. Perhaps,
more
information about what it is you are actually trying to accomplish? A
little
more of a bigger picture?

-Demetri

"Alex" wrote:

I have a question about determining if one QueryString keys exists. The
idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me
that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null,
QueryString.Key s["client"] is null, Request.QuerySt ingText = "client",
ect.

I cannot seem to find a way to determine if a QuerySting exists when it
has no value assigned to it. Any ideas?

Thanks,

Alex

[Alex]

Ok, just for this scenario, the only QueryString key on the url is client, as in www...com/main.aspx?client. QueryString["client"] will return null. QueryString.Key s.Count will return 1. I have no way of telling that the QS client is present b/c it does not have a value assigned to it. I could write a function to search parts of the url, but I wanted to see if any answers would surface first.

I do not have a QueryString.Ite m in C#. I do have other name value collections, but none of them work for me as I reported in the original post. Any more ideas?

Thanks

Alex
"Mythran" <ki********@hot mail.com> wrote in message news:OM******** ******@TK2MSFTN GP10.phx.gbl...
Private Function KeyInQuery(ByVa l Key As String) As Boolean
Dim keyName As String
Dim val As String

For i As Integer = 0 To Request.QuerySt ring.Count - 1
val = Request.QuerySt ring.Item(i)

If Not val Is Nothing AndAlso val.ToLower() = Key.ToLower()
Return True
End If
Next

Return False
End Function

Try the above function :)

Mythran
"Alex" <al**@nospam.ne t> wrote in message news:u0******** ******@TK2MSFTN GP10.phx.gbl...
I have a question about determining if one QueryString keys exists. The idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null, QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no value assigned to it. Any ideas?

Thanks,

Alex

[Demetri]

Request.QuerySt ring.ToString() will return "Client"

Perhaps, you can split the querystring into a string array variable and do a
foreach on the string array and test for the string "Client" to see if it
exist.

-Demetri

"Alex" wrote:

Greg,

That is exactly what my aim is. Thanks for your input.

Akex

--
Alex Mueller
"Greg Burns" <greg_burns@DON T_SPAM_ME_hotma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

Besides, what good is a QueryString key with no value?

I think he said he wants to use the key as a boolean flag. I've ran into
this myself before. Seems silly to pass a qs like client=true or
client=false, or client=1 and client=0, etc. When just passing client by
itself could represent "true" and no qs could represent "false".

my .02
Greg
"Demetri" <De*****@discus sions.microsoft .com> wrote in message
news:61******** *************** ***********@mic rosoft.com...

I'm not sure I understand what the dilema is. If you can tell from
Keys.Count
= 1 that the querystring has atleast one key and you can reference
QueryString["Client"] and determine if it is null or not then what is the problem?

Besides, what good is a QueryString key with no value?

I think somehow your approach to produce a solution is flawed. Perhaps,
more
information about what it is you are actually trying to accomplish? A
little
more of a bigger picture?

-Demetri

"Alex" wrote:

> I have a question about determining if one QueryString keys exists. The
> idea is, if this key exists, than its presence is enough to indicate that> its value is true. For example ...
>
> www.something.com/main.aspx?client
>
> Client is the QueryString, but no value is given. This would mean to me
> that client exists, so its value is true. In the code behind, I can tell> that client exists using Request.QuerySt ring.Keys.Count , which equals 1.> QueryString["client"] is null, QueryString.Key s[0] is null,
> QueryString.Key s["client"] is null, Request.QuerySt ingText = "client",
> ect.
>
> I cannot seem to find a way to determine if a QuerySting exists when it
> has no value assigned to it. Any ideas?
>
> Thanks,
>
> Alex

[Greg Burns]

QueryString("cl ient") does indeed return a value of Nothing (in VB), so that won't help you. But you can search to see if the key exists in the collection...

This should work. BTW, it is essential the same as Mythran posted previously.

Dim found As Boolean = False
For i As Integer = 0 To Request.QuerySt ring.Count - 1
If Request.QuerySt ring(i).ToLower = "client" Then
found = True
Exit For
End If
Next

Greg

"Alex" <al**@nospam.ne t> wrote in message news:uQ******** ******@TK2MSFTN GP12.phx.gbl...
Ok, just for this scenario, the only QueryString key on the url is client, as in www...com/main.aspx?client. QueryString["client"] will return null. QueryString.Key s.Count will return 1. I have no way of telling that the QS client is present b/c it does not have a value assigned to it. I could write a function to search parts of the url, but I wanted to see if any answers would surface first.

I do not have a QueryString.Ite m in C#. I do have other name value collections, but none of them work for me as I reported in the original post. Any more ideas?

Thanks

Alex
"Mythran" <ki********@hot mail.com> wrote in message news:OM******** ******@TK2MSFTN GP10.phx.gbl...
Private Function KeyInQuery(ByVa l Key As String) As Boolean
Dim keyName As String
Dim val As String

For i As Integer = 0 To Request.QuerySt ring.Count - 1
val = Request.QuerySt ring.Item(i)

If Not val Is Nothing AndAlso val.ToLower() = Key.ToLower()
Return True
End If
Next

Return False
End Function

Try the above function :)

Mythran
"Alex" <al**@nospam.ne t> wrote in message news:u0******** ******@TK2MSFTN GP10.phx.gbl...
I have a question about determining if one QueryString keys exists. The idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null, QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no value assigned to it. Any ideas?

Thanks,

Alex

[bruce barker]

the problem you have is the query string is not well formed, the "=" is required by the w3c standard for it to be a valid url. but all is not lost, try

Page.Request.Se rverVariables["QUERY_STRI NG"]

this will return the raw querystring

-- bruce (sqlwork.com)
"Alex" <al**@nospam.ne t> wrote in message news:u0******** ******@TK2MSFTN GP10.phx.gbl...
I have a question about determining if one QueryString keys exists. The idea is, if this key exists, than its presence is enough to indicate that its value is true. For example ...

www.something.com/main.aspx?client

Client is the QueryString, but no value is given. This would mean to me that client exists, so its value is true. In the code behind, I can tell that client exists using Request.QuerySt ring.Keys.Count , which equals 1. QueryString["client"] is null, QueryString.Key s[0] is null, QueryString.Key s["client"] is null, Request.QuerySt ingText = "client", ect.

I cannot seem to find a way to determine if a QuerySting exists when it has no value assigned to it. Any ideas?

Thanks,

Alex