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How to check if the web page contains any string queries at the page load?
977
Query string values can be checked using regular expressions. You can select regular expressions from the global White list or enter them manually. For example, if you know that a query string must have a value of ABCD , a regular expression of ^ABCD$ is an exact match test.
A querystring is a set of characters input to a computer or Web browser and sent to a query program to recover specific information from a database .
A query string is a part of a uniform resource locator (URL) that assigns values to specified parameters.
Yes. The entire text of an HTTPS session is secured by SSL. That includes the query and the headers.
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; }
}
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