Add filter parametres to an http web request

See more:

VB

REST

This code, is working perfectly (getting data with web request) :

Dim request As HttpWebRequest = DirectCast(WebRequest.Create(resource_url), HttpWebRequest)
    request.Headers.Add("Authorization", authHeader)
    request.Method = "GET"
    request.ContentType = "application/json"
    request.Accept = "application/json"
    Try
        Dim response As WebResponse = request.GetResponse()
        Dim datastream As Stream = response.GetResponseStream
        Dim reader As StreamReader = New StreamReader(datastream)
        Dim responsefromserver As String = reader.ReadToEnd
        If responsefromserver = Nothing Then
            TextBox1.Text = "No response from server"
        Else
            Dim json As String = responsefromserver
            Dim ser As JObject = JObject.Parse(json)
            Dim data As List(Of JToken) = ser.Children().ToList
            Dim output As String = ""
            Dim successReq As Boolean = False
            Dim avDom As String = ""
            Dim counter As Integer = 0
            For Each item As JProperty In data
                item.CreateReader()
                output += "|-" & item.Name.ToString & " :  " & item.Value.ToString & "-"
                output += Environment.NewLine
                counter += 1
            Next
            TextBox1.Text = output
            TextBox1.Text += Environment.NewLine + counter.ToString
            reader.Close()
            response.Close()
        End If
    Catch ex As Exception
        TextBox1.Text = ex.Message.ToString
    End Try
End Sub

When i try to add some filters, it fails. for example, I try to add the limit filter this way : Dim resource_url = "http://www.inart.com/api/rest/products/store/1?limit=1".
I am sure that the filter is ok because i tried at postman application and it is working!
What should I change or add? Thank you.

What I have tried:

I tried that :

Dim resource_url = "http://www.inart.com/api/rest/products/store/1?limit=1".