Hi guys,
On my aspx page I use google maps. On dragend event I want to load latlng points from my sql database. I am trying to find some code examples but no luck. I will write down what Ive done so far and please feel free to guide me on any solution you might have, or on any correction on my current code.
I read as much I could at these days and I decided to go on ashx control which wil return an xml file. At my first attempt I will kepp it as simple as I can, to realize how I will go through this.
a) Do I have to return the xmlreader or xmldocument? I want as I described to catch the xml in javascript on the dragend event of google maps.
b) How am I gonna read the result xml in javascript?
Thank you
On my aspx page I use google maps. On dragend event I want to load latlng points from my sql database. I am trying to find some code examples but no luck. I will write down what Ive done so far and please feel free to guide me on any solution you might have, or on any correction on my current code.
I read as much I could at these days and I decided to go on ashx control which wil return an xml file. At my first attempt I will kepp it as simple as I can, to realize how I will go through this.
Code:
Imports System.Web
Imports System.Web.Services
Public Class getLocs
Implements System.Web.IHttpHandler
Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim App As New myApp
context.Response.Clear()
context.Response.ContentType = "text/xml"
context.Response.ContentEncoding = System.Text.Encoding.UTF8
context.Response.Write(getXml())
context.Response.End()
End Sub
ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
Get
Return False
End Get
End Property
Public Function getXml() As System.Xml.XmlDocument
Dim xmlr As System.Xml.XmlReader = Nothing
Dim xmlrDoc As New System.Xml.XmlDocument
Dim cn As New System.Data.SqlClient.SqlConnection()
cn.ConnectionString = _
"data source=.\SQLEXPRESS;initial catalog=glxxx;" & _
"User ID=xxx;Password=xxxx"
cn.Open()
Dim cmd As New System.Data.SqlClient.SqlCommand()
cmd.Connection = cn
cmd.CommandText = "SELECT * FROM leta_loc FOR XML RAW('marker'),ROOT('markers')"
xmlr = cmd.ExecuteXmlReader()
xmlr.ReadOuterXml()
xmlrDoc.Load(xmlr)
MsgBox(xmlrDoc.OuterXml.ToString)
Return xmlrDoc
End Function
End Classa) Do I have to return the xmlreader or xmldocument? I want as I described to catch the xml in javascript on the dragend event of google maps.
b) How am I gonna read the result xml in javascript?
Thank you