How to check if the web page contains any string queries at the page load?
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Do you mean QueryString?rahul– rahul2009-07-17 06:44:25 +00:00Commented Jul 17, 2009 at 6:44
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4 Answers
You can determine if there are any values in the QueryString by checking its count:
Request.QueryString.Count > 0;
That said if you are trying to prevent a page from erroring because you don't want to access a value that is not there I recommend wrapping query parms up in page properties and returning safe values from the property.
As an example
// setting this as protected makes it available in markup
protected string TaskName
{
get { return (string)Request.QueryString["VarName"] ?? String.Empty; }
}
Comments
Check for
Request.QueryString["QueryStringName"]
if you know the particular name and it returns null if there isn't any querystring by that name
or if you want to check the count of querystrings then
Request.QueryString.Count
and check against 0. If greater than 0 then there is atleast 1 string appended.
Comments
To check if the page was accessed with any query string, you can check the Count property:
bool expression = Request.QueryString.Count > 0;
To access a defined query string parameter, you can do it like this:
string myParam = Request.QueryString["MyParam"];
myParam will be null if it is not on the URL.
answered Jul 17, 2009 at 6:45
Christian C. Salvadó
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1 Comment
rahul
But there isn't any length property
if(Request.QueryString.Count > 0)
{
//Code here
}
else
{
//Code here
}
