C# NSObject类代码示例

partial         void earnButtonClicked(NSObject sender)
        {
            decimal amt = 0;
            try
            {
                amt = Convert.ToDecimal(this.amount.Text);
            }
            catch
            {
                amt = 0;
            }

            var subscription = Observable.Start(
                () =>
                 {
                    var cmd = this.context.NewCommandExecutor<MinionAggregate>();
                    cmd.Execute(new EarnAllowanceCommand
                    {
                        AggregateId = this.minionId,
                        Date = this.dateField.Date,
                        Amount = amt,
                        Description = this.description.Text
                    });
                }).Subscribe();

            this.DismissModalViewControllerAnimated(true);
        }

		partial void GetPosition (NSObject sender)
		{
			Setup();
			
			this.cancelSource = new CancellationTokenSource();
			
			PositionStatus.Text = String.Empty;
			PositionLatitude.Text = String.Empty;
			PositionLongitude.Text = String.Empty;
			
			this.geolocator.GetPositionAsync (timeout: 10000, cancelToken: this.cancelSource.Token, includeHeading: true)
				.ContinueWith (t =>
				{
					if (t.IsFaulted)
						PositionStatus.Text = ((GeolocationException)t.Exception.InnerException).Error.ToString();
					else if (t.IsCanceled)
						PositionStatus.Text = "Canceled";
					else
					{
						PositionStatus.Text = t.Result.Timestamp.ToString("G");
						PositionLatitude.Text = "La: " + t.Result.Latitude.ToString("N4");
						PositionLongitude.Text = "Lo: " + t.Result.Longitude.ToString("N4");
					}
					
				}, scheduler);
		}

		const int buttonSpace = 45; //24;
		
		public SessionCell (UITableViewCellStyle style, NSString ident, Session showSession, string big, string small) : base (style, ident)
		{
			SelectionStyle = UITableViewCellSelectionStyle.Blue;
			
			titleLabel = new UILabel () {
				TextAlignment = UITextAlignment.Left,
				BackgroundColor = UIColor.FromWhiteAlpha (0f, 0f)
			};
			speakerLabel = new UILabel () {
				TextAlignment = UITextAlignment.Left,
				Font = smallFont,
				TextColor = UIColor.DarkGray,
				BackgroundColor = UIColor.FromWhiteAlpha (0f, 0f)
			};
			locationImageView = new UIImageView();
			locationImageView.Image = building;

			button = UIButton.FromType (UIButtonType.Custom);
			button.TouchDown += delegate {
				UpdateImage (ToggleFavorite ());
				if (AppDelegate.IsPad) {
					NSObject o = new NSObject();
					NSDictionary progInfo = NSDictionary.FromObjectAndKey(o, new NSString("FavUpdate"));

					NSNotificationCenter.DefaultCenter.PostNotificationName(
						"NotificationFavoriteUpdated", o, progInfo);
				}
			};
			UpdateCell (showSession, big, small);
			
			ContentView.Add (titleLabel);
			ContentView.Add (speakerLabel);
			ContentView.Add (button);
			ContentView.Add (locationImageView);
		}

 async partial void btnShare_Activated (UIBarButtonItem sender)
 {
     var text = viewModel.SharingMessage;
     var items = new NSObject[] { new NSString (text) };
     var activityController = new UIActivityViewController (items, null);
     await PresentViewControllerAsync (activityController, true);
 }

 public override void DidUpdateBeaconRanges(NSObject[] rangedBeacons)
 {
     if (BeaconsUpdated != null)
     {
         var list = new List<BeaconStatus> ();
         foreach (var b in rangedBeacons) {
             var bStatus = new BeaconStatus ();
             var ndict = b as NSDictionary;
             foreach (var p in ndict) {
                 if (p.Key.ToString() == "beacon_id")
                     bStatus.Id = p.Value.ToString();
                 if (p.Key.ToString() == "beacon_tags")
                     bStatus.Tags = p.Value.ToString();
                 if (p.Key.ToString() == "proximity_value")
                     bStatus.ProximityValue = p.Value.ToString();
                 if (p.Key.ToString() == "beacon_name")
                     bStatus.Name = p.Value.ToString();
                 if (p.Key.ToString() == "proximity_string")
                     bStatus.ProximityString = p.Value.ToString();
             }
             list.Add (bStatus);
         }
         InvokeOnMainThread(() => BeaconsUpdated (this, list));
     }
 }

		public override void PrepareForSegue (UIStoryboardSegue segue, NSObject sender)
		{
			base.PrepareForSegue (segue, sender);

			if (segue.Identifier == "showDetail")
				PrepareForSegue ((DetailViewController)segue.DestinationViewController);
		}

partial         void btnGrayscaleClicked(NSObject sender)
        {
            UIImage imageOriginal = UIImage.FromFile( @"Images/sample.png" );
            UIImage imageSource = UIImage.FromImage( imageOriginal.CGImage );

            Stopwatch watch = new Stopwatch();

            watch.Start();

            UIImage imageProcessed = ConvertToGrayScale( imageSource );

            watch.Stop();

            long tick = watch.ElapsedTicks;

            long milliSeconds = watch.ElapsedMilliseconds;

            watch.Reset();

            imageViewDiplay.Image = imageProcessed;

            string message = string.Format(@"tick:{0};duration:{1}", tick, milliSeconds);

            lbTime.Text = message;
        }

		async partial void OnPress (NSObject sender)
		{
			HandlerType = null;
			TheButton.Enabled = false;
			switch (TheTable.SelectedRow) {
			case 0:
				new DotNet (this).HttpSample ();
				break;
			case 1:
				new DotNet (this).HttpSecureSample ();
				break;
			case 2:
				new Cocoa (this).HttpSample ();
				break;
			case 3:
				await new NetHttp (this).HttpSample (false);
				break;
			case 4:
				await new NetHttp (this).HttpSample (true);
				break;
			case 5:
				RunTls12Request ();
				break;
			}
		}

		partial void ShowSimpleForm (NSObject sender)
		{
			var alertController = UIAlertController.Create (title, message, UIAlertControllerStyle.Alert);

			alertController.AddTextField (textField => {
				textField.Placeholder = "Name";
				textField.InputAccessoryView = new CustomInputAccessoryView ("Enter your name");
			});
				
			alertController.AddTextField (textField => {
				textField.KeyboardType = UIKeyboardType.EmailAddress;
				textField.Placeholder = "[email protected]";
				textField.InputAccessoryView = new CustomInputAccessoryView ("Enter your email address");
			});

			var acceptAction = UIAlertAction.Create (acceptButtonTitle, UIAlertActionStyle.Default, _ => {
				Console.WriteLine ("The \"Text Entry\" alert's other action occured.");
				string enteredText = alertController.TextFields?.First ()?.Text;

				if (string.IsNullOrEmpty (enteredText))
					Console.WriteLine ("The text entered into the \"Text Entry\" alert's text field was \"{0}\"", enteredText);
			});

			var cancelAction = UIAlertAction.Create (cancelButtonTitle, UIAlertActionStyle.Cancel, _ =>
				Console.WriteLine ("The \"Text Entry\" alert's cancel action occured.")
			);

			// Add the actions.
			alertController.AddAction (acceptAction);
			alertController.AddAction (cancelAction);

			PresentViewController (alertController, true, null);
		}

		partial void ShowSecureEntry (NSObject sender)
		{
			var alertController = UIAlertController.Create (title, message, UIAlertControllerStyle.Alert);
			alertController.AddTextField (textField => {
				textField.Placeholder = "Password";
				textField.SecureTextEntry = true;
				textField.InputAccessoryView = new CustomInputAccessoryView ("Enter at least 5 characters");
				textField.EditingChanged += HandleTextFieldTextDidChangeNotification;
			});

			var acceptAction = UIAlertAction.Create (acceptButtonTitle, UIAlertActionStyle.Default, _ =>
				Console.WriteLine ("The \"Secure Text Entry\" alert's other action occured.")
			);

			var cancelAction = UIAlertAction.Create (cancelButtonTitle, UIAlertActionStyle.Cancel, _ =>
				Console.WriteLine ("The \"Text Entry\" alert's cancel action occured.")
			);

			acceptAction.Enabled = false;
			secureTextAlertAction = acceptAction;

			// Add the actions.
			alertController.AddAction (acceptAction);
			alertController.AddAction (cancelAction);

			PresentViewController (alertController, true, null);
		}

		public override void PrepareForSegue (UIStoryboardSegue segue, NSObject sender)
		{
			base.PrepareForSegue (segue, sender);

			var nxtVC =	segue.DestinationViewController as SecondViewController;
			nxtVC.Data = "Hello from Root View";
		}

		partial void Done (NSObject sender)
		{
			var model = _priceTileModel;
			if (model != null) {
				model.Done();
			}
		}

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
                    _urlTextField.ShouldReturn = doReturn;
                    _browser.Delegate = new customWebViewDelegate(this);

                    var webDocumentView = new NSObject(
                        Messaging.IntPtr_objc_msgSend(_browser.Handle, (new Selector("_documentView").Handle)));
                    var webView = webDocumentView.GetNativeField("_webView");
                    Messaging.void_objc_msgSend_IntPtr(webView.Handle, (new Selector("setCustomUserAgent:")).Handle,
                        (new NSString(@"Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.38 Safari/532.0")).Handle);
                     /*
                      *
                      * /* http://d.hatena.ne.jp/KishikawaKatsumi/20090217/1234818025
                      NSString *userAgent =
                            @"Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20";

                        id webDocumentView;
                        id webView;
                        webDocumentView = objc_msgSend(myWebView, @selector(_documentView));
                        object_getInstanceVariable(webDocumentView, "_webView", (void**)&webView);
                        objc_msgSend(webView, @selector(setCustomUserAgent:), userAgent); */

                    loadURL(_startURL);
        }

		public override void PrepareForSegue (UIStoryboardSegue segue, NSObject sender)
		{
			if (!(segue.DestinationViewController is AssetGridViewController) || !(sender is UITableViewCell))
				return;

			var assetGridViewController = (AssetGridViewController)segue.DestinationViewController;
			var cell = (UITableViewCell)sender;

			// Set the title of the AssetGridViewController.
			assetGridViewController.Title = cell.TextLabel.Text;

			// Get the PHFetchResult for the selected section.
			NSIndexPath indexPath = TableView.IndexPathForCell (cell);
			PHFetchResult fetchResult = sectionFetchResults [indexPath.Section];

			if (segue.Identifier == allPhotosSegue) {
				assetGridViewController.AssetsFetchResults = fetchResult;
			} else if (segue.Identifier == collectionSegue) {
				// Get the PHAssetCollection for the selected row.
				var collection = fetchResult [indexPath.Row] as PHAssetCollection;
				if (collection == null)
					return;
				var assetsFetchResult = PHAsset.FetchAssets (collection, null);

				assetGridViewController.AssetsFetchResults = assetsFetchResult;
				assetGridViewController.AssetCollection = collection;
			}
		}

			UIButton detailButton; // need class-level ref to avoid GC

			/// <summary>
			/// This is very much like the GetCell method on the table delegate
			/// </summary>
			public override MKAnnotationView GetViewForAnnotation (MKMapView mapView, NSObject annotation)
			{
				// try and dequeue the annotation view
				MKAnnotationView annotationView = mapView.DequeueReusableAnnotation(annotationIdentifier);
				
				// if we couldn't dequeue one, create a new one
				if (annotationView == null)
					annotationView = new MKPinAnnotationView(annotation, annotationIdentifier);
				else // if we did dequeue one for reuse, assign the annotation to it
					annotationView.Annotation = annotation;
		     
				// configure our annotation view properties
				annotationView.CanShowCallout = true;
				(annotationView as MKPinAnnotationView).AnimatesDrop = true;
				(annotationView as MKPinAnnotationView).PinColor = MKPinAnnotationColor.Green;
				annotationView.Selected = true;
				
				// you can add an accessory view, in this case, we'll add a button on the right, and an image on the left
				detailButton = UIButton.FromType(UIButtonType.DetailDisclosure);
				detailButton.TouchUpInside += (s, e) => { 
					var c = (annotation as MKAnnotation).Coordinate;
					new UIAlertView("Annotation Clicked", "You clicked on " +
					c.Latitude.ToString() + ", " +
					c.Longitude.ToString() , null, "OK", null).Show(); 
				};
				annotationView.RightCalloutAccessoryView = detailButton;
				annotationView.LeftCalloutAccessoryView = new UIImageView(UIImage.FromBundle("Images/Icon/29_icon.png"));
				//annotationView.Image = UIImage.FromBundle("Images/Apress-29x29.png");
				
				return annotationView;
			}