You want to see how to use the QueryString collection in the ASP.NET web development framework. Almost all examples show one way of using this NameValueCollection, but there are faster and more logical ways. This short information sheet has some examples and tips with QueryString, using the C# programming language. Example 1 Here we see an .aspx Web Forms page that executes when the user accesses Default.aspx. The code here is the code-behind part, Default.aspx.cs, and it is written in the C# programming language. To test the above code, run the page in the web browser on the ASP.NET development server. It will be completely blank. Try adding the string "?param=dotnet" at the end of the URL. QueryString example [C#] using System; using System.Web.UI; public partial class _Default : Page { protected void Page_Load(object sender, EventArgs e) { string v = Request. QueryString ["param"]; if (v != null) { Response.Write("param is "); ...