adding keys and values to query string

Question

I am trying to do :

foreach (JProperty o in obj.Properties())
{
   string ke = o.Name.ToString();
   string va = o.Value.ToString();
   HttpContext.Current.Request.QueryString.Add(ke,va);
}

but it gives me the error "collection is read-only"

HOW can I add values to querystring then ?

Thanks

It shows "read-only", means you can't add. You have to create a new one and assign the query from the beginning. — Ian
– Ian, Commented Mar 3, 2016 at 10:12

misha130 · Accepted Answer · 2016-03-03 10:15:01Z

1

Request.QueryString is the url you recieve from the server. You cant change it. What you can do is execute a response redirect with the query string like so:

string qs = "?";
foreach (JProperty o in obj.Properties())
{
   qs += o.Name.ToString();
   qs += "=" + o.Value.ToString() + "&";
}
Response.Redirect("url/index" + qs);

answered Mar 3, 2016 at 10:15

misha130

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4 Comments

lol Over a year ago

so in fact with redirect it will recall the handler?

misha130 Over a year ago

Not recall but call. It will create/add a querystring and call a new handler.

lol Over a year ago

in my solution I can not call again. so in this case there is no way to add values to QueryString , am I right?

misha130 Over a year ago

Yes, cant change it unless you call again. If you REALLY REALLY insist on changing the querystring, something that is BAD PRACTICE then check out stackoverflow.com/questions/15450505/… which gives you an option to change it BEFORE you recieve it

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