I am a total beginner at C#, but I have used Java a lot. I am trying to use the following code in my app to get location data. I am making a Windows 8 desktop app to use the GPS sensor in my device:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Devices.Sensors;
using Windows.Devices.Geolocation;
using Windows.Devices.Geolocation.Geoposition;
using Windows.Foundation;
namespace Hello_Location
{
public partial class Form1 :
{
public Form1()
{
InitializeComponent();
}
async private void Form1_Load(object sender, EventArgs e)
{
Geolocator loc = new Geolocator();
try
{
loc.DesiredAccuracy = PositionAccuracy.High;
Geoposition pos = await loc.GetGeopositionAsync();
var lat = pos.Coordinate.Latitude;
var lang = pos.Coordinate.Longitude;
Console.WriteLine(lat+ " " +lang);
}
catch (System.UnauthorizedAccessException)
{
// handle error
}
}
private void button1_Click(object sender, EventArgs e)
{
}
}
}
I get this error:
'await' requires that the type
'Windows.Foundation.IAsyncOperation'
have a suitable GetAwaiter method. Are you missing a using directive
for 'System'? C:\Users\clidy\documents\visual studio
2012\Projects\Hello-Location\Hello-Location\Form1.cs
How can I fix this?
Also it will be very useful if you can point me to some resources for C# location and the sensor API for windows desktop apps. Upon googling, I am only getting Windows RT APIs.
To fix your error you have to reference to the link that Bart gave in one of the question's comments.
You might need to add a reference to System.Runtime.WindowsRuntime.dll
as well if you are using mapped types like Windows Runtime event
handlers:
...
That assembly resides in C:\Program Files (x86)\Reference
Assemblies\Microsoft\Framework.NETCore\v4.5
I recently found a "solution" for a similar question: C# desktop application doesn't share my physical location. Maybe you might be interested by my approach: https://stackoverflow.com/a/14645837/674700.
It's more like a workaround and it's not targeting Windows 8, but it works in the end.
alex's solution works!
add that reference and geolocation api starts working like a charm! so do async methods for other sensors!
here is a function i just got working using it.
async public void UseGeoLocation()
{
Geolocator _GeoLocator = new Geolocator();
Geoposition _GeoPosition =
await _GeoLocator.GetGeopositionAsync();
Clipboard.Clear();
Clipboard.SetText("latitude," +
_GeoPosition.Coordinate.Latitude.ToString() +
"," + "longitude," + _GeoPosition.Coordinate.Longitude.ToString() +
"," + "heading," + _GeoPosition.Coordinate.Heading.ToString() +
"," + "speed," + _GeoPosition.Coordinate.Speed.ToString());
Application.Exit();
}
Related
I want to run the Skeinforge slicer program written in Python inside my Windows Phone 8 C# application. I have determined that I should probably use IronPython to do this, I have already determined that I can run Skeinforge inside the ipy.exe terminal I got when I installed IronPython. My problem though is that I am struggling to figure out how to host and run a Python script with IronPython inside Windows Phone 8. I have also already managed to get a simple hello world script running inside a Desktop Windows Forms application that transfers the applications console output to the Debug console with the following code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using IronPython.Hosting;
using Microsoft.Scripting.Hosting;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
DebugWriter debugW = new DebugWriter();
Console.SetOut(debugW);
}
private void button1_Click(object sender, EventArgs e)
{
TextWriter tw = new StreamWriter("Test.py");
tw.Write(scriptBox.Text);
tw.Close();
try
{
var ipy = Python.CreateRuntime();
dynamic test = ipy.UseFile("Test.py");
}
catch (Exception ex)
{
Debug.WriteLine("Error: " + ex.Message);
}
}
}
}
And this is the DebugWriter:
class DebugWriter : TextWriter
{
private StringBuilder content = new StringBuilder();
public DebugWriter()
{
Debug.WriteLine("Writing console to debug");
}
public override void Write(char value)
{
base.Write(value);
if (value == '\n')
{
Debug.WriteLine(content.ToString());
content = new StringBuilder();
}
else
{
content.Append(value);
}
}
public override Encoding Encoding
{
get { return System.Text.Encoding.UTF8; }
}
}
I have no idea how to even add the IronPython libraries to my Windows Phone 8 application though as the standard libraries won't import. I have though tried compiling the apparently now defunct Windows Phone 7 libraries with the master source code and I can import these libraries, but I get absolutely no response on the debug terminal when I try to run my hello world script.
Do any of you have any idea how to get this woring in Windows Phone 8, if you know how to do this in Windows 8/Metro/RT then that would also probably work for WP8.
UPDATE:
I have looked at the debug output again and I seem to get this error when trying to use the WP7 libraries to run a hello world script:
A first chance exception of type 'System.NotImplementedException' occurred in Microsoft.Scripting.DLL
Error: The method or operation is not implemented.
I managed to get Skeinforge running on a modified version of IPY. You can get the source for my application here: http://skeinforgewp8.codeplex.com/
I am trying to connect to R from c# using the following code. It looks like C# is not reading the R dll files. My R installation directory is this:
C:\Users\R-2-13\R-2.13.0\bin\i386
and I also downloaded and put the R.NET.dll in the same directory. In Visual Studio, I set the reference to R.NET.dll file. When I run the following code, the code goes the the catch section "unable to find the R Installation". Any ideas? Has anybody got this working?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using RDotNet;
namespace RNet_Calculator
{
public partial class Form1 : Form
{
// set up basics and create RDotNet instance
// if anticipated install of R is not found, ask the user to find it.
public Form1()
{
InitializeComponent();
bool r_located = false;
while (r_located == false)
{
try
{
REngine.SetDllDirectory(#"C:\Users\R-2-13\R-2.13.0\bin\i386");
REngine.CreateInstance("RDotNet");
r_located = true;
}
catch { MessageBox.Show(#"Unable to find R installation's \bin\i386 folder. Press OK to attempt to locate it.");
MessageBox.Show("error");
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
This is http://rdotnet.codeplex.com/ (RDotNet) to develop Winform applications. While I know Shiny and all the other Web-like R-tools quite well, the combination of c# and R still is my preferred end-user combinations. Try simple things like disabling buttons with Shiny...
Too bad rdotnet is quite buggy; in the current version, it crashes on R exeptions, even in try-catched ones.
This said: please make absolutely sure that you use version 1.5, not the stupidly called "stable" (=early beta) version on the page. Best download it via NuGet. Also check if you did not mix 32bit R with 64 bit c#.
Using the Helper-functions of 1.5, initialization is:
Helper.SetEnvironmentVariables();
engine = REngine.CreateInstance(EngineName);
engine.Initialize();
# Assuming you want to catch the graphic window, use my RGraphAppHook
# on the rdotnet site http://rdotnet.codeplex.com/workitem/7
cbt = new RGraphAppHook { GraphControl = GraphPanelControl };
Im trying to get my notefunction to post the current city you are in by using your gps coordinates when saving a note. Right now it's only showing "unknown location". Im kinda lost right now and i have worked so long with this code to try and get it to work so please could anyone tell me what i have done wrong?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using System.Device.Location;
using System.Text;
using System.IO.IsolatedStorage;
using System.IO;
using Secret.myTerraService;
namespace Secret
{
public partial class AddNotePage : PhoneApplicationPage
{
private IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
private string location = "";
#region Hämtar din geografiska position
public AddNotePage()
{
InitializeComponent();
GeoCoordinateWatcher watcher;
watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.Default)
{
MovementThreshold = 20
};
watcher.PositionChanged += this.watcher_PositionChanged;
watcher.StatusChanged += this.watcher_StatusChanged;
watcher.Start();
}
private void watcher_StatusChanged(object sender, GeoPositionStatusChangedEventArgs e)
{
switch (e.Status)
{
case GeoPositionStatus.Disabled:
// location is unsupported on this device
break;
case GeoPositionStatus.NoData:
// data unavailable
break;
}
}
private void watcher_PositionChanged(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)
{
var epl = e.Position.Location;
// Access the position information thusly:
epl.Latitude.ToString("0.000");
epl.Longitude.ToString("0.000");
epl.Altitude.ToString();
epl.HorizontalAccuracy.ToString();
epl.VerticalAccuracy.ToString();
epl.Course.ToString();
epl.Speed.ToString();
e.Position.Timestamp.LocalDateTime.ToString();
}
void client_ConvertLonLatPtToNearestPlaceCompleted(object sender, myTerraService.ConvertLonLatPtToNearestPlaceCompletedEventArgs e)
{
location = e.Result;
//throw new NotImplementedException();
}
#endregion
#region Knappfunktioner
private void AppBar_Cancel_Click(object sender, EventArgs e)
{
navigateBack();
}
private void AppBar_Save_Click(object sender, EventArgs e)
{ // spara en ny anteckning
if (location.Trim().Length == 0)
{
location = "Okänd Plats";
}
// skapa namnet på filen
StringBuilder sb = new StringBuilder();
sb.Append(DateTime.Now.Year);
sb.Append("_");
sb.Append(String.Format("{0:00}", DateTime.Now.Month));
sb.Append("_");
sb.Append(String.Format("{0:00}", DateTime.Now.Day));
sb.Append("_");
sb.Append(String.Format("{0:00}", DateTime.Now.Hour));
sb.Append("_");
sb.Append(String.Format("{0:00}", DateTime.Now.Minute));
sb.Append("_");
sb.Append(String.Format("{0:00}", DateTime.Now.Second));
sb.Append("_");
location = location.Replace(" ", "-");
location = location.Replace(", ", "_");
sb.Append(location);
sb.Append(".txt");
//spara filen i Isolated Storage
var appStorage = IsolatedStorageFile.GetUserStoreForApplication();
try
{
using (var fileStream = appStorage.OpenFile(sb.ToString(), System.IO.FileMode.Create))
{
using (StreamWriter sw = new StreamWriter(fileStream))
{
sw.WriteLine(editTextBox.Text);
}
}
}
catch
{
// åtgärda vid senare tillfälle..
}
//Klart Navigera tillbaka till NoteMainPage
navigateBack();
}
When testing this, I can see a few points where your code could break. You should debug with breakpoints to actually confirm that your app is getting GPS location data. If not, use the Windows Phone emulator and run a GPS simulation (and then confirm again).
Next, once you know that your GPS data is coming in and formatted correctly for your Terra Web Service, confirm that the data is actually being sent to the Terra Web Service and that data is being returned from the web service call. If your Terra Web Service is returning "Unknown Location" still, try again but this time plot the GPS location near a major city to increase the odds of the web service knowing what city you are close to. If you are still returning "Unknown Location" then you can be fairly certain that the issue resides with the web service provider.
In my experience with the Windows Phone location services (I've only used dev phones with WiFi access (i.e. no sim)), location data sometimes takes a few seconds or minutes to pickup. If you're testing this on a physical dev phone in a basement or an area with limited access for the GPS to find you, odds are the data isn't being generated. Also, because the Windows Phone location data isn't necessarily instant, you can't always call it on the fly and expect it to have location data ready. In my experience I have had the user opt in to location services (per the Windows Phone Marketplace submission requirements) and then have a background agent pull location data while the user is using the app. That way location data is likely to be ready by the time user would need it (like your example when the user saves the note).
Here's a working example I made for you in C# that will work for your Windows Phone app. The sample is a console app for the sake of simplicity and time. If you can't figure it out still, I'll code it up for Windows Phone. With this though you really have everything you need to make it work, just plug in the lat and long variables. Download Working Source Code (Visual Studio 2010)
C# Source code snippet
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using TerraServiceExample.com.msrmaps; // add the service using statement
// http://msrmaps.com/terraservice2.asmx
namespace TerraServiceExample
{
class Program
{
/// <summary> The main entry point for the application. </summary>
static void Main(string[] args)
{
// Create the GPS point from your location services data
LonLatPt location = new LonLatPt();
// Modify Lat and Lon based on your needs
// This example uses the GPS Coordinates for "Eau Claire, Wisconsin, United States"
location.Lat = 44.811349;
location.Lon = -91.498494;
// Create a new TerraService object
TerraService ts = new TerraService();
// Output the nearest location from the TerraService
Console.WriteLine(ts.ConvertLonLatPtToNearestPlace(location));
// For console app to stay open/close easily
Console.WriteLine("Press any key to close window...");
Console.ReadKey();
// Lastly, appreciate the Microsoft folks that made this available for free
// They are all interesting individuals but you should read about Jim Gray via Wikipedia to
// understand some history behind this cool web service.
}
}
}
I added as reference 3 dll's: Google.Apis , Google.Apis.Translate.v2 , System.Runtime.Serialization
In Form1 i have one line:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Translator.translate(new TranslateInput());
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
Now the error the exception is on the first line in the class Translator:
The line that throw the error is: var service = new TranslateService { Key = GetApiKey() };
The class code is:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.Web;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using Google.Apis.Util;
using Google.Apis.Translate.v2;
using Google.Apis.Translate.v2.Data;
using TranslationsResource = Google.Apis.Translate.v2.Data.TranslationsResource;
public class Translator
{
public static string translate(TranslateInput input)
{
// Create the service.
var service = new TranslateService { Key = GetApiKey() };
string translationResult = "";
// Execute the first translation request.
Console.WriteLine("Translating to '" + input.TargetLanguage + "' ...");
TranslationsListResponse response = service.Translations.List(input.SourceText, input.TargetLanguage).Fetch();
var translations = new List<string>();
foreach (TranslationsResource translation in response.Translations)
{
translationResult = translation.TranslatedText;
}
return translationResult;
}
private static string GetApiKey()
{
return "AIzaSyCjxMe6RKHZzd7xSfSh2pEsBqUdXYm5tA8"; // Enter Your Key
}
}
/// <summary>
/// User input for this example.
/// </summary>
[Description("input")]
public class TranslateInput
{
[Description("text to translate")]
public string SourceText = "Who ate my candy?";
[Description("target language")]
public string TargetLanguage = "fr";
}
The error is:
Could not load type 'Google.Apis.Discovery.FactoryParameterV1_0' from assembly 'Google.Apis, Version=1.1.4497.35846, Culture=neutral, PublicKeyToken=null'.
Tried to google for help and also tried to change the project type to x64 platform but it didnt help. So i put it back on x86
I have windows 7 64bit visual studio c# 2010 pro .net 4.0 profile client.
Cant figure out what is the error ?
This error as reported in the above-posted messages is due to a local copy in the bin\Debug folder of your solution or project. Even though you attempt to clean your solution, such copies will persist to exist.
In order to avoid this to happen, you have to force Visual Studio to refer to the correct DLL by adding reference paths within a project properties. Unfortunately, if you got several projects within your solutions, you will have to set the reference paths for the projects one after another until completed.
Should you wish to know how to setup reference paths follow these simple instructions:
1.Select your project, right-click, then click "Properties";
2.In the project properties, click "Reference Paths";
3.Folder, type or browse to the right location of your DLL, click [Add Folder].
You will need to perform these steps for as many different locations you may have for each of your DLLs. Consider setting an output path under the Build tab of the same project properties, so that you may output your DLLs in the same directory for each of them, thus assuring you to find all the latest builds under the same location, simplifying forward your referencing.
Note this can only be one reason for this error. But it is sure that is has to do something with a wrong copy of the mentioned assembly.
I've made a simple C# WinForms app, which makes a screen-capture
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using SlimDX.Direct3D9;
using SlimDX;
namespace KMPP
{
public class DxScreenCapture
{
Device d;
public DxScreenCapture()
{
PresentParameters present_params = new PresentParameters();
present_params.Windowed = true;
present_params.SwapEffect = SwapEffect.Discard;
d = new Device(new Direct3D(), 0, DeviceType.Hardware, IntPtr.Zero, CreateFlags.SoftwareVertexProcessing, present_params);
}
public Surface CaptureScreen()
{
Surface s = Surface.CreateOffscreenPlain(d, Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, Format.A8R8G8B8, Pool.Scratch);
d.GetFrontBufferData(0, s);
return s;
}
}
}
now to call it:
using System;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.IO;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using SlimDX.Direct3D9;
using SlimDX;
using KMPP;
using System.Diagnostics;
using System.Threading;
namespace dxcapture
{
public partial class Form1 : Form
{
DxScreenCapture sc = new DxScreenCapture();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Stopwatch stopwatch = new Stopwatch();
DateTime current = DateTime.Now;
string n = string.Format(#"text-{0:yyyy-MM-dd_hh-mm-ss-tt}.bmp",DateTime.Now);
string directory = (#"C:\temp\");
string name = (".bmp");
string filename = String.Format("{0:hh-mm-ss}{1}", DateTime.Now, name);
string path = Path.Combine(directory, filename);
stopwatch.Start();
Thread.Sleep(1000);
Surface s = sc.CaptureScreen();
Surface.ToFile(s, path, ImageFileFormat.Bmp);
stopwatch.Stop();
s.Dispose();
textBox1.Text = ("Elapsed:" + stopwatch.Elapsed.TotalMilliseconds);
}
private void button2_Click(object sender, EventArgs e)
{
}
}
}
Everything works fine when I run this app on Windows 7 x64 (it was compiled here)
Unfortunately, when I try to run this app on Windows XP x86 machine - I'm getting following error:
How I tried to fix it?
installed latest DX on WinXP
installed latest SlimDX on WinXP (btw this step solved my previous problem)
installed latest .Net Framework v.4 on WinXP
compiled this app as x86 and used SlimDX.dll x86 for the same reason
I also put slimdx.dll into the same folder where dxcapture.exe (app name) is located
What might be the problem? Does WinXP support Directx9 screen capture?
edit: I've tried to comment-out different code-lines and it seems like "device creation" is the problem.. I mean this line:
d = new Device(new Direct3D(), 0, DeviceType.Hardware, IntPtr.Zero, CreateFlags.SoftwareVertexProcessing, present_params);
WinXP machine has integrated ATI graphics, so, I don't know.. maybe that's the problem, maybe not, but I can't check my program on some other pc.
As mentioned in the bug report you filed, the problem appears to be with your system, whether it be missing DirectX components or your graphics adapter not supporting Direct3D 9. If your card doesn't at least support D3D9, you won't be able to use SlimDX (or any of the other DirectX wrappers) for any kind of rendering.