Please make sure that you have read XML Web Services: Part 1: Overview and database interaction and XML Web Services: Part 2: Consumption through ASP.NET as this example builds on the previous examples and code.
One of the great features of .NET is the ease with which data from a Web Service can be integrated into environments such as mobile devices. Using the Mobile Toolkit and the Web Service from our previous examples, you can easily make your data available to WAP/WML devices.
First, a few notes about the Mobile Toolkit (this example provides only a brief overview of the Mobile Toolkit):
- When using the Mobile Toolkit you must inherit System.Web.UI.MobileControls.MobilePage which identifies the code as a Mobile Page and allows you to use the Mobile Web Form functionality.
- Register a new tag using the namespace System.Web.UI.MobileControls from the assembly System.Web.Mobile. This allows you to "shortcut" your code and reference the Mobile Controls.
- A Mobile Page must have at least one mobile form tag.
- Mobile Controls should be run at the server level.
Below is the code that accesses our XML Web Service and integrates it with our mobile controls.
<%@ Page Inherits="System.Web.UI.MobileControls.MobilePage" Language="C#" %>
<%@ Import Namespace="System.Xml"%>
<%@ Import Namespace="System.Collections" %>
<%@ Register TagPrefix="mobile"
Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %>
<script runat="server">
public void Page_Load(Object sender, EventArgs e){
//create an array to hold values in
ArrayList values = new ArrayList();
//get data from our web service
XmlDataDocument mydata = new XmlDataDocument();
mydata.DataSet.ReadXml("http://www.myservice.com/xmlwebservice_data.asmx/GetData?");
//iterate through specified node list and add to array
XmlNodeList elemList = mydata.GetElementsByTagName("ArticleName");
for (int i=0; i < elemList.Count; i++){
values.Add (elemList[i].InnerXml);
}
//bind to datasource
List1.DataSource = values;
List1.DataBind();
}
</script>
<mobile:Form paginate=true runat="server">
<mobile:Label Alignment="center" runat="server">WML WEB Service Example</mobile:Label>
<br/>
<mobile:List runat="server" id="List1">
</mobile:List>
</mobile:Form>
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First, we're setting our Page directives and registering our tag, and then importing the other namespaces we need to access and manipulate the return XML from our Web Service.
<%@ Page Inherits="System.Web.UI.MobileControls.MobilePage" Language="C#" %>
<%@ Import Namespace="System.Xml"%>
<%@ Import Namespace="System.Collections" %>
<%@ Register TagPrefix="mobile"
Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %>
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