push notification helper library

http://windowsteamblog.com/windows_phone/b/wpdev/archive/2011/01/14/windows-push-notification-server-side-helper-library.aspx http://create.msdn.com/en-us/education/catalog/article/pnhelp-wp7
2026-06-29 13:02:05 +03:00 · 2011-03-28 21:22:11 +03:00
parent a4c09735f0
commit 00f97e41d6
130 changed files with 13440 additions and 0 deletions
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+using System;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Windows.Threading;
+using System.Windows;
+
+namespace WindowsPhone.Recipes.Push.Server.ViewModels
+{
+    /// <summary>
+    /// Base class for all ViewModel classes in the application.
+    /// It provides support for property change notifications 
+    /// and has a DisplayName property.  This class is abstract.
+    /// </summary>
+    public abstract class ViewModelBase : INotifyPropertyChanged
+    {
+        #region Properties
+
+        public Dispatcher Dispatcher
+        {
+            get { return Application.Current.Dispatcher; }
+        }
+        
+        #endregion
+
+        #region Constructor
+
+        protected ViewModelBase()
+        {
+        }
+
+        #endregion // Constructor
+
+        #region Debugging
+
+        /// <summary>
+        /// Warns the developer if this object does not have
+        /// a public property with the specified name. This 
+        /// method does not exist in a Release build.
+        /// </summary>
+        [Conditional("DEBUG")]
+        [DebuggerStepThrough]
+        public void VerifyPropertyName(string propertyName)
+        {
+            // Verify that the property name matches a real,  
+            // public, instance property on this object.
+            if (TypeDescriptor.GetProperties(this)[propertyName] == null)
+            {
+                string msg = "Invalid property name: " + propertyName;
+
+                if (this.ThrowOnInvalidPropertyName)
+                    throw new Exception(msg);
+                else
+                    Debug.Fail(msg);
+            }
+        }
+
+        /// <summary>
+        /// Returns whether an exception is thrown, or if a Debug.Fail() is used
+        /// when an invalid property name is passed to the VerifyPropertyName method.
+        /// The default value is false, but subclasses used by unit tests might 
+        /// override this property's getter to return true.
+        /// </summary>
+        protected virtual bool ThrowOnInvalidPropertyName { get; private set; }
+
+        #endregion // Debugging Aides
+
+        #region INotifyPropertyChanged Members
+
+        /// <summary>
+        /// Raised when a property on this object has a new value.
+        /// </summary>
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        /// <summary>
+        /// Raises this object's PropertyChanged event.
+        /// </summary>
+        /// <param name="propertyName">The property that has a new value.</param>
+        protected void NotifyPropertyChanged(string propertyName)
+        {
+            this.VerifyPropertyName(propertyName);
+
+            PropertyChangedEventHandler handler = this.PropertyChanged;
+            if (handler != null)
+            {
+                var e = new PropertyChangedEventArgs(propertyName);
+                handler(this, e);
+            }
+        }
+
+        #endregion // INotifyPropertyChanged Members
+    }
+}