Question

I have a QS like this:

Request.QueryString = Id=443f0cb9&Num=9232323

Now I want to add 000 in front of Num. Like this: 0009232323

How would I do that?

Answer 1

The QueryString property of the HttpRequest is a NameValueCollection you would need append the “000” to the item in the collection. I’ve used the PedLeft from the question linkedby @Davide Paris

if (Request.QueryString["Num"] != null)
{
    string num = Request.QueryString["Num"];
    Request.QueryString["Num"] = num.PadLeft((num.Length + 3), '0');
}