Develop Reference

How to add a PushPin item to a map? Windows Phone

I'm trying to draw a pushpin to a map in the map page of my application but when I add the code to overlay a pushpin to the map, I get the following errors:
The type or namespace name PushPin could not be found (are you missing a using directive or an assembly reference?)
and
Microsoft.Phone.Maps.Controls.Map does not contain a definition for Children and no extension method Children accepting a first argument of type Microsoft.Phone.Maps.Controls.Map could be found
I understand from this that I'm missing a reference? I have references for controls.maps and contols.toolkit, so I can't understand why.
Also this is the code I'm using to draw the pushpin:
PushPin myPin = new Pushpin();
myPin.Location = MyGeoPosition;
myPin.Content = "My car";
MyMap.Children.Add(myPin);

Try this.
MapLayer layer1 = new MapLayer();
Pushpin pushpin1 = new Pushpin();
pushpin1.GeoCoordinate = MyGeoPosition;
pushpin1.Content = "My car";
MapOverlay overlay1 = new MapOverlay();
overlay1.Content = pushpin1;
overlay1.GeoCoordinate = MyGeoPosition;
layer1.Add(overlay1);
myMap.Layers.Add(layer1);
You create new overlay for each pushpin, add all overlays to a layer, and add the layer to the map element.

You can try..
BitmapImage myImage1; myImage1 = new BitmapImage(new Uri("/Assets/Images/pushpin-google-hi.png", UriKind.RelativeOrAbsolute));
var image = new Image();
image.Width = 50;
image.Height = 50;
image.Opacity = 100;
image.Source = myImage1;
var mapOverlay = new MapOverlay();
mapOverlay.Content = image;
mapOverlay.GeoCoordinate = new GeoCoordinate(lats, lons);
var mapLayer = new MapLayer();
mapLayer.Add(mapOverlay);
MyMap.Layers.Add(mapLayer);
MyMap.SetView(new GeoCoordinate(lats, lons), 16);

Try this. First I have this in a utils class:
public MapLayer GetCurrentPosition (out MapOverlay myPositionOverlay)
{
MapLayer myPositionLayer = new MapLayer();
myPositionOverlay = new MapOverlay();
Image myPositionImage = new Image();
myPositionImage.Source = new System.Windows.Media.Imaging.BitmapImage(new Uri("/Assets/myImagePin.png", UriKind.RelativeOrAbsolute));
myPositionImage.Height = 70;
myPositionImage.Visibility = Visibility.Visible;
myPositionImage.HorizontalAlignment = HorizontalAlignment.Center;
myPositionOverlay.Content = myPositionImage;
myPositionLayer.Add(myPositionOverlay);
return myPositionLayer;
}
Then this goes on your MapLoaded method:
MapLayer mypositionArrow = placePushPins.GetCurrentPosition(out myPositionOverlay);
MyMap.Layers.Add(mypositionArrow);
Then, if you want your pushpin not to be static, to move according to your position, add this to your watcher:
myPositionOverlay.GeoCoordinate = myCurrentPositionCoordinate;
To make the pushpin move smoothly just implement animation like this: http://blogs.bing.com/maps/2014/09/25/part-2-bring-your-maps-to-life-creating-animations-with-bing-maps-net/

Trying to add overlays to map error

I just cleared layers off my mapping program and when I try to add a new layer I receive this error message.
newSystem.ArgumentException was unhandled by user code
HResult=-2147024809
Message=Value does not fall within the expected range.
Source=System.Windows
InnerException:
If anyone knows why this is I would very much appreciate your assistance
private void loadZoomLevel12Pics()
{
map1.Layers.Clear();
MapLayer pinLayer = new MapLayer();
// Create a new empty Pushpin
// Beny Sur- Mer War Cemetary
MapOverlay pinOverlay = new MapOverlay();
// Add the location of the Pushpin using latitude and longitude.
pinOverlay.GeoCoordinate = new GeoCoordinate(49.33783000, -0.45215600);
//Image pinOverlayImage = new Image();
pinOverlayImage.Source = new BitmapImage(new Uri("images/Hedgehog.png", UriKind.Relative));
pinOverlay.Content = pinOverlayImage;
pinOverlay.PositionOrigin = new Point(0.0, 0.0);
pinOverlayImage.Opacity = 0.8;
pinOverlayImage.Height = 8;
pinOverlayImage.Width = 8;
pinOverlayImage.Tap += pinOverlayImage_Tap;
pinLayer.Add(pinOverlay);
map1.Layers.Add(pinLayer);
Then these pictures are cleared and a new zoom level is loaded
private void loadZoomLevel13Pics()
{
map1.Layers.Clear();
MapLayer pinLayer = new MapLayer();
// Create a new empty Pushpin
// Beny Sur- Mer War Cemetary
MapOverlay pinOverlay = new MapOverlay();
// Add the location of the Pushpin using latitude and longitude.
pinOverlay.GeoCoordinate = new GeoCoordinate(49.33783000, -0.45215600);
//Image pinOverlayImage = new Image();
pinOverlayImage.Source = new BitmapImage(new Uri("images/Hedgehog.png", UriKind.Relative));
pinOverlay.Content = pinOverlayImage;
pinOverlay.PositionOrigin = new Point(0.0, 0.0);
pinOverlayImage.Opacity = 0.8;
pinOverlayImage.Height = 30;
pinOverlayImage.Width = 30;
pinOverlayImage.Tap += pinOverlayImage_Tap;
pinLayer.Add(pinOverlay);
map1.Layers.Add(pinLayer); // THIS IS THE LINE CAUSING THE PROBLEM
All of the images are declared globally because they are used in other functions/methods inside the program.
It seems like its trying to add the same layer that was previously added and is having difficulty doing so, but all of the layers are cleared on the first line of the method.

I had this same issue using a global polygon instead of an image. The issue is that even though you are calling map1.Layers.Clear() this does not get done immediately after it is called therefore you need to create a new image. In general, this can be fixed by not using global/instance variables for the overlay.Content...just declare it each time and assign it to the Content.

How to retrieve the name of a Panorama-Item at runtime?

I am programmatically adding items to my Panorama Control called PanoramaCC.
//function to create the panorama items in our view
private void showPanorama(string panoramaName)
{
//create the panorama item and define it
PanoramaItem genItem = new PanoramaItem();
genItem.Height = 265;
genItem.Width = 440;
genItem.Tap += new EventHandler<System.Windows.Input.GestureEventArgs>(PanoramaItem_Tap);
genItem.Name = panoramaName;
//create the stackpanel for the panoramaitem
StackPanel genStack = new StackPanel();
genStack.Orientation = System.Windows.Controls.Orientation.Horizontal;
//margin to be done
genStack.Margin = new Thickness(0, -20, 0, 20);
//load the image
Image genImg = new Image();
genImg.Height = 220;
genImg.Width = 400;
genImg.Stretch = System.Windows.Media.Stretch.Fill;
genImg.Margin = new Thickness(20, 5, 20, 5);
string path = "Assets/AppGraphics/CreditCards/" + panoramaName.ToString() + "Front.png";
Uri uriR = new Uri(path, UriKind.Relative);
BitmapImage imgSource = new BitmapImage(uriR);
genImg.Source = imgSource;
//add image into stackpanel
genStack.Children.Add(genImg);
//add stackpanel to the panoramaitem
genItem.Content = genStack;
//add the panoramaitem to the panoramaview
this.PanoramaCC.Items.Add(genItem);
}
The issue I have is that during runtime I want to retrieve the name of the panoramaItem I am currently looking at and do something with it. I've managed to retrieve the name through the tap event for navigation purposes, string name = ((PanoramaItem)sender).Name; but this is a diffrent scenario. I want to retrieve the name and then delete the item with the corresponding name. Pressing a button should delete the currently selected panoramaItem, is what I'm trying to achieve.

You can get the current PanoramaItem by using the SelectedItem property. You don't need to get the name to delete it.
PanoramaItem currentItem = myPanorama.SelectedItem as PanoramaItem;
if(currentItem != null)
{
//if you want the name for other reasons
string name = currentItem.Name;
//Items returns an ItemsCollection object
myPanorama.Items.Remove(currentItem);
}

How to Create ImageBrush in C# code

In XAML:
<Rectangle Stroke="Aqua" Opacity="0.7" StrokeThickness="10" Canvas.Left="24" Canvas.Top="22" Height="86" Width="102">
<Rectangle.Fill>
<ImageBrush ImageSource="C:\Users\xiaorui.dong\Pictures\profile.jpeg"></ImageBrush>
</Rectangle.Fill>
</Rectangle>
XAML works fine, but how to create the above ImageBrush in C# code:
C# should be like this:
Rectangle rectangle = new Rectangle();
rectangle.StrokeThickness = 10;
rectangle.Height = 200;
rectangle.Width = 100;
rectangle.SetValue(Canvas.LeftProperty, 100d);
rectangle.SetValue(Canvas.TopProperty, 100d);
rectangle.Fill = new ImageBrush(new BitmapImage(new Uri(#"C:\Users\xiaorui.dong\Pictures\profile.jpeg")));

I'm guessing the problem is with locating the image and that the exception you're getting is because you don't provide the UriKind parameter. Try giving UriKind.Relative as a parameter to the Uri:
rectangle.Fill = new ImageBrush(new BitmapImage(
new Uri(#"C:\Users\xiaorui.dong\Pictures\profile.jpeg", UriKind.Relative)));

In c# you can use it like , first thing is remove the fill from XAML then use the same code in c# as you have used it . It must work.
ImageBrush ib = new ImageBrush();
ib.ImageSource = new BitmapImage(new Uri("your path",UriKind.Relative));
rectangle.Fill = ib;

This code creates ImageBrush using image "Assets/image.png" which is part of the UWP project. Relative paths are unavailable in UWP version of ImageBrush.
var imageBrush = new ImageBrush();
imageBrush.ImageSource = new BitmapImage(new Uri("ms-appx:///Assets/image.png"));

Set Background to canvas

how i can set background on string path?
canvas1.Background = "/path/";
please help!!! thanks :)

I think you are looking for the ImageBrush class:
ImageBrush imageBrush = new ImageBrush();
imageBrush.ImageSource = new BitmapImage(new Uri(#"/path/", UriKind.Relative));
canvas1.Background = imageBrush;

Use this
mycanvas.Background = new ImageBrush()
{ ImageSource = new BitmapImage((new Uri(mypath, UriKind.Absolute))) };