/// <summary>
 /// Create a data context object using the SharePoint web services to connect to SharePoint.
 /// </summary>
 /// <param name="wsUri">URI to the SharePoint site.</param>
 public SharePointDataContext(Uri wsUri)
 {
     _dataProvider = new WebServicesSharePointDataProvider(wsUri);
 }
 /// <summary>
 /// Create a data context object using the specified SharePoint data provider.
 /// </summary>
 /// <param name="provider">SharePoint data provider.</param>
 public SharePointDataContext(ISharePointDataProvider provider)
 {
     _dataProvider = provider;
 }
 public SharePointDataContext(SPSite site)
 {
     _dataProvider = new ObjectModelSharePointDataProvider(site);
 }