I have tried the Javascript delay suggestion with the stack, but the
problem still lies with the Javascript being such a large process that
IE still sends out the "do you want to continue running this script"
dialog.
So instead, I've been trying to use the HttpWebRequest functions in VB
to retrieve the Xml files from google. (See Code Below). There are a
few issues I'm having though that I can't seem to get past. Is there
any examples out there of someone doing exactly what I'm trying to do
in C# or VB? I can't seem to find much on this.
1 - I only seem to be able to retrieve a route for the first element
in my For Each Loop
2 - Some directions return this error
"System.Net.WebException: The remote server returned an error: (414)
Request-URI Too Large. at System.Net.HttpWebRequest.GetResponse()"
My VB Code:
For Each row As DataRow In dtFindNearestFacilities.Rows
Try
Dim wRequest As HttpWebRequest
Dim wResponse As HttpWebResponse
Dim reader As StreamReader
Dim result As String
Dim xmlRequest As New StringBuilder()
xmlRequest.Append("origin=" & RDABranchAddress)
xmlRequest.Append("&destination=" & row.Item("af_Address") & " " &
row.Item("af_City") & ", " & row.Item("af_State") & " " +
row.Item("af_ZipCode"))
xmlRequest.Append("&sensor=false")
GoogleMapsLink = GoogleMapsLink + xmlRequest.ToString()
wRequest = DirectCast(WebRequest.Create(GoogleMapsLink),
HttpWebRequest)
wResponse = DirectCast(wRequest.GetResponse(), HttpWebResponse)
reader = New StreamReader(wResponse.GetResponseStream())
Dim xmlDoc As New XmlDocument
xmlDoc.PreserveWhitespace = True
xmlDoc.LoadXml(reader.ReadToEnd)
Dim xmlNodeList As XmlNodeList =
xmlDoc.GetElementsByTagName("step")
Dim totalDistance As Decimal = 0
For Each node As XmlNode In xmlNodeList
Dim routeDistance As Decimal =
node.Item("distance").Item("value").InnerText
totalDistance = totalDistance + routeDistance
Next
totalDistance = Math.Round(((totalDistance / 1000) * 0.6214), 1)
> instead of using javascript, at this stage you could write server code
> on your aspx page to use the Directions Web service, do the
> calculations on the server, and return the branches and distances to
> the client.
>
> see the following
> documentation:http://code.google.com/apis/maps/documentation/directions/
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