VB.NET

Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string.

Note: The ToQueryString method was added in Chilkat v9.5.0.92.

VB.NET

Dim success As Boolean = False

Dim ht As New Chilkat.Hashtable

' Add name/value pairs from an existing query param string where the values are already URL encoded.
Dim qp As String = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges"
success = ht.AddQueryParams(qp)

' Add some additional name/value pairs.
ht.AddStr("name","Jack Sparrow")
ht.AddStr("movie","Pirates of the Carribean")

' Iterate over the hash table to show what we have..

Dim keys As New Chilkat.StringTable
ht.GetKeys(keys)
Dim numKeys As Integer = keys.Count
Dim key As String
Dim val As String
Dim i As Integer = 0
While i < numKeys
    key = keys.StringAt(i)
    val = ht.LookupStr(key)
    Debug.WriteLine(key & " = " & val)
    i = i + 1
End While

' Output for the above loop:

' color = blue
' name = Jack Sparrow
' fruits = apples&oranges
' txt = this is a test
' movie = Pirates of the Carribean

' Get all name/value pairs as a query parm string with values URL encoded
qp = ht.ToQueryString()
Debug.WriteLine(qp)

' Result:
' color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean