Is there a way to get all querystring name / value pairs in a collection?

Question

Is there a way to get all querystring name / value pairs in a collection?

I am looking for a built-in way in .net, if not, I can just split into and and load the collection.

Answer 1

Yes, use the HttpRequest.QueryString collection:

Gets the set of HTTP request string variables.

You can use it as follows:

 foreach (String key in Request.QueryString.AllKeys) { Response.Write("Key: " + key + " Value: " + Request.QueryString[key]); } 

Answer 2

Well, Request.QueryString already has a collection. In particular, this is a NameValueCollection . If your code works in ASP.NET, that’s all you need.

So, to answer your question: Yes, there is.

Answer 3

If you have a query ONLY presented as a string, use HttpUtility.ParseQueryString to parse it into a NameValueCollection.

However, if this is part of the HttpRequest, use the already processed QueryString property of your HttpRequest.

Answer 4

You can use LINQ to create a list of anonymous objects that you can access in an array:

 var qsArray = Request.QueryString.AllKeys .Select(key => new { Name=key.ToString(), Value=Request.QueryString[key.ToString()]}) .ToArray(); 

Answer 5

QueryString property in the HttpRequest actually the NameValueCollection class. All you have to do is

NameValueCollection col = Request.QueryString;