How to detect a querystring like `?info`

[HavocSquad]

I saw a web page that uses \[code\]page.aspx?info\[/code\] or \[code\]page.aspx?download\[/code\]. I tried this but it doesn't work:\[code\]if (Request.QueryString["info"] != null){ Label1.Text = "info";}\[/code\]Is there anyway to check if user entered \[code\]?info\[/code\] after the url?