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Returning Lists

  • Artigo

This programing task shows how to create a simple Windows Form that uses the GetListCollection method of the Lists Web service to retrieve the collection of lists and display their names.

To create a new Window Application project  

  • Start Microsoft Visual Studio .NET.
  • On the File menu, point to New, and then click Project.
  • In the New Project dialog box, click Visual C# Projects, and then select the Windows Application template.
  • Type "ShowLists" as the name and specify the location for the project files, and then click OK.

To add a reference to the Lists Web Service  

  • In Solution Explorer, right-click Web References, and then click Add Web Reference.
  • In the Add Web Reference dialog box, enter the URL to the Lists Web service on the server running Microsoft Windows SharePoint Services: http://servername/_vti_bin/lists.asmx and then click Add Reference.

To add code to display the collection of lists  

  • Open Form1 in Design view, display the Toolbox, and then drag a Label control and a Button control on to the form.

  • Right-click the Label1 control, and then click Properties and delete the value Label1 from the Text property of the control.

  • Double-click the Button1 control to display the Code Editor, and add the following lines of code to the Click event handler:

    private void button1_Click(object sender, System.EventArgs e)
{
   // Declare and initialize a variable for the Lists Web Service.
   servername.Lists myservice = new servername.Lists();

   // Authenticate the current user by passing their default
   // credentials to the Web Service from the system credential cache.
   myservice.Credentials = System.Net.CredentialCache.DefaultCredentials;

   // Declare an XmlNode object and initialize it with the XML
   // response from the GetListCollection method.
   System.Xml.XmlNode node = myservice.GetListCollection();

   // Loop through XML response and parse out the value of the
   // Title attribute for each list.
   foreach(System.Xml.XmlNode xmlnode in node) {
      label1.Text+=xmlnode.Attributes["Title"].Value + "\n";
   }
}

  • On the Debug menu, click Start to test the form.

  • Click Button1 to display the lists in your SharePoint site.