How can I know the QueryString has a keyword or not?

[ABC]

How can I know the QueryString has a keyword or not?

For our case, the querystring sometime has only a keyword contains not any
value,

for example,

http://mysite.com/iijjkk.aspx?added

I want to know the querystring has 'added' keyword or not.

 

[Klaus H. Probst]

http://mysite.com/iijjkk.aspx?added

I want to know the querystring has 'added' keyword or not.

From within an ASP page, just use Request.QueryString:

string k = Request.QueryString["added"];

If the parameter was there, k will be non-null.

 

[Teemu Keiski]

Hi,

Request.QueryString collection itself isn't probably populated if there
isn't both key abd value (.aspx?key=value) but you should be able to inspect
the qs as normal string.

For example

Dim hasKey As Boolean = (Request.QueryString.ToString().IndexOf("key") > -1)

 

[Riki]

Hi,

Request.QueryString collection itself isn't probably populated if
there isn't both key abd value (.aspx?key=value) but you should be
able to inspect the qs as normal string.

For example

Dim hasKey As Boolean =
(Request.QueryString.ToString().IndexOf("key") > -1)

Most of the time, this will be correct, but you may get false hits with this
method.

For instance, when checking for the key "ID", this querystring will
erroneously satisfy your condition:
www.domain.com/index.aspx?name=didi

 

[OHM \( One Handed Man \)]

or

If Request.Params.GetKey("KeyName") Is Nothing Then

Response.Write("The key 'KeyName' does not exist")

End If


--
( OHM ) - One Handed Man
AKA Terry Burns - http://TrainingOn.net

http://mysite.com/iijjkk.aspx?added

I want to know the querystring has 'added' keyword or not.

From within an ASP page, just use Request.QueryString:

string k = Request.QueryString["added"];

If the parameter was there, k will be non-null.

 

[Teemu Keiski]

Certainly,

just note my response in light of the original question...