ADO.NET :: WCF For Existing REST Webservice - Consume Like OData
Mar 11, 2011
I have an existing RESTful webservice that I consume (I did not create) from a 3rd party. I currently use WebRequest and WebResponse to create and read the request and response. I access the service by url with query string parameters to pass what type of data I am requesting. I get the results back in XML, then have to load it into a new XmlDocument, create a bunch of DataSets, XmlNodeReaders, DataTables, etc. It's really messy in my opinion.
What I am looking to accomplish is to take advantage of the Entity Framework Model, OData, and WCF. I have never create or used WCF yet. The webservice that I am accessing is some sort of service created from within Apache, it is not .Net. I don't know whether or not I can utilize the new .Net Framework 4.0 services to make the consumption of this service any better, easier, or cleaner.
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Why it is not working?
internal static int AddCatalog(string name, Guid key, string userName) {
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[Code] ......
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[Code]....
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Edit
Here's the code I've written thus far:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Net;
using System.Text;
namespace SeatEater.Web.UI.search
{
public class RazorGatorService
{
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Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, encode);
response.close();
readStream.close();
}
}
I receive the error message:
A field initializer cannot reference the nonstatic field, method, or property 'field'
in the second line of the above codeblock. I'm very new to using HttpWebRequest and HttpWebResponse. Can you advise me as to how to rectify the error message I'm receiving?
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<a href=page1_2.htm>
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<a href=page1_1_b.htm> (this then will have no more links on it - dead end)
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...... <node url="xxx.htm"/>
...... <node url="yyy.htm".>
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[Code]....
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[URL]
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Jan 14, 2011
I'm trying to consume the following web service http://ipinfodb.com/ip_location_api.php
this web service returns an xml response, the code below gets the XML response, but somehow when phasing the values from the XML response it does not work.
What is wrong with my code?
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.IO;
using System.Net;
using System.Xml;
namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
String Xml;
// Create the web request
request = WebRequest.Create("http://api.ipinfodb.com/v2/ip_query.php?key=<yourkey>&ip=74.125.45.100&timezone=true") as HttpWebRequest;
// Get response
using (response = request.GetResponse() as HttpWebResponse)
{
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
Xml = reader.ReadToEnd();
}
// Console xml output
Console.WriteLine(Xml); //see if we get the xml response, (YES we do)
Console.ReadLine();
string _currentField = "";
StringReader _sr = new StringReader(Xml);
XmlTextReader _xtr = new XmlTextReader(_sr);
_xtr.XmlResolver = null;
_xtr.WhitespaceHandling = WhitespaceHandling.None;
// get the root node
_xtr.Read();
if ((_xtr.NodeType == XmlNodeType.Element) && (_xtr.Name == "Response"))
{
while (_xtr.Read())
{
if ((_xtr.NodeType == XmlNodeType.Element) && (!_xtr.IsEmptyElement))
{
_currentField = _xtr.Name;
_xtr.Read();
if (_xtr.NodeType == XmlNodeType.Text)
{
switch (_currentField)
{
case "Status":
Console.WriteLine(_xtr.Value); //we print to console for testing purposes, normally assign it to a variable here!
break;
case "CountryCode":
Console.WriteLine(_xtr.Value);
break;
case "CountryName":
Console.WriteLine(_xtr.Value);
break;
case "RegionCode":
Console.WriteLine(_xtr.Value);
break;
case "RegionName":
Console.WriteLine(_xtr.Value);
break;
case "City":
Console.WriteLine(_xtr.Value);
break;
case "ZipPostalCode":
Console.WriteLine(_xtr.Value);
break;
case "Latitude":
Console.WriteLine(_xtr.Value);
break;
case "Longitude":
Console.WriteLine(_xtr.Value);
break;
case "Gmtoffset":
Console.WriteLine(_xtr.Value);
break;
case "Dstoffset":
Console.WriteLine(_xtr.Value);
break;
case "TimezoneName":
Console.WriteLine(_xtr.Value);
break;
case "Isdst":
Console.WriteLine(_xtr.Value);
break;
case "Ip":
Console.WriteLine(_xtr.Value);
break;
default:
// unknown field
throw new Exception("Unknown field in response.");
}
}
}
}
}
Console.ReadLine();
}
}
}
EDIT: this is the XML response returned
<?xml version="1.0" encoding="UTF-8" ?>
- <Response>
<Status>OK</Status>
<CountryCode>US</CountryCode>
<CountryName>United States</CountryName>
<RegionCode>06</RegionCode>
<RegionName>California</RegionName>
<City>Mountain View</City>
<ZipPostalCode>94043</ZipPostalCode>
<Latitude>37.4192</Latitude>
<Longitude>-122.057</Longitude>
<Gmtoffset>-28800</Gmtoffset>
<Dstoffset>0</Dstoffset>
<TimezoneName>America/Los_Angeles</TimezoneName>
<Isdst>0</Isdst>
<Ip>74.125.45.100</Ip>
</Response>
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