Microsoft Sharepoint Products and Technologies Resource Kit eBook

Chapter 36: Building Applications for Microsoft Office SharePoint Portal Server 2003 989
7. From the Toolbox, drag a button, text box, tree view, and list box onto Form1
using the default name assigned to them by Visual Studio .NET: button1,
textBox1, treeView1, and listBox1, respectively.
8. Double-click button1 to get to the button1_Click function in the code-behind.
You will be repeatedly replacing code in this function as you explore the
SharePoint Portal Server 2003 Web services.
9. Double-click treeView1 to get the treeView1_AfterSelect function in the codebehind.
You will also place code in this function.
The following C# Windows-based application examples should run locally on
your development PC using your default NTLM credentials accessing the local installation
of SharePoint Portal Server 2003 from the MyComputer zone. Failing that
approach, or to access a SharePoint Portal Server 2003 elsewhere, you will need to
either implement Code Access Security (CAS) as described in Chapter 34, “The
SharePoint Portal Server Object Model Introduction,” Chapter 35, “Building Applications
Using Windows SharePoint Services Data,” and Chapter 37, “Using Visual Studio
.NET to Create Web Parts,” to establish trust for the C# Windows-based application
or to set up anonymous access to your portal site (only recommended for exploring
what can be done with these Web services). You are now ready to begin working
with the SharePoint Portal Server 2003 Web services.
AreaService Web Service
You created a proxy to the SharePoint Portal Server 2003 AreaService Web service
named AreaWebService in the Visual Studio .NET Setup section of this chapter. Let’s
begin our exploration of this Web service by retrieving the characteristics of the
Home area and its subareas in a default installation of SharePoint Portal Server 2003.
Clicking a node in the tree view will populate the list box with the characteristics of
that area. Start by creating two private functions that perform activities that will be
called from multiple places.
Create a getUserCredentials function to simplify the way you authenticate to
the Web services. If SharePoint Portal Server 2003 is installed locally on your PC, you
can use the URL that you use to access your portal (typically http://localhost/) for the
URI as shown in the code; otherwise, use the same URL referenced by your Web
services.
private System.Net.NetworkCredential getUserCredentials()
{
//1. Return a network credential from the credential cache
// for the currently authenticated user.
// This assumes integrated security is in use and that the
// currently authenticated user has sufficient rights.
return
System.Net.CredentialCache.DefaultCredentials.GetCredential(
new Uri("http://localhost/"), "NTLM");
}