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Channel: GMap.NET - Great Maps for Windows Forms & Presentation
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New Post: {"Object reference not set to an instance of an object."}

July 20, 2014, 10:37 pm
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New Post: OpenStreetMap placemark

July 21, 2014, 10:48 am
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string url = ...
string fileName = ...

WebClient wb = new WebClient();
wb.Headers.Add("User-Agent: Other"); //that is the simple line!
wb.DownloadFile(url, fileName);
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New Post: PostGis and new release

July 21, 2014, 11:50 am
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Hi,

I am impressed with this control. Congratulate!.

My questions are:
1) Is it possible to add a PostGIS layer (using Geoserver?)
2) Runs propertly on Windows 2012?
3) What about the future? Will be new releases or is discontinued?

I think these are important questions to decide for any component.

Thanks a lot!
Alex
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Created Unassigned: Three lines of code to fix Credentials for Nearmap [16102]

July 21, 2014, 7:16 pm
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Hi,

Again, thanks for providing a gread library.

I just want to let you know that I got credentials to work with Nearmap by adding three lines of code described in this post:
http://blog.kowalczyk.info/article/at3/Forcing-basic-http-authentication-for-HttpWebReq.html


regards
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New Post: How to use on android

July 23, 2014, 7:10 am
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Hi every body.
I used GMap.net with C# and it works perfect. Now i need to use it in an android application. I found the apk mentioned above but I could not find the source of an example how to use this library for android application. Can you put the source of the example for download?

thanks.
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New Post: Color of polygons

July 24, 2014, 8:15 am
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Hello, I using your library. When i have created 2 polygons and draw it with different colors but they turned out colored by the same color.
List<PointLatLng> polygonPoints1 = new List<PointLatLng>();
polygonPoints1.Add(new PointLatLng(55.633528, 37.655875));
polygonPoints1.Add(new PointLatLng(55.7955015, 49.073303));
GMapPolygon polygon1 = new GMapPolygon(polygonPoints1, "polygon1");
polygon1.Stroke.Color = Color.Blue;
polygons.Polygons.Add(polygon1);

List<PointLatLng> polygonPoints2 = new List<PointLatLng>();
polygonPoints2.Add(new PointLatLng(55.633528, 37.655875));
polygonPoints2.Add(new PointLatLng(48.6704194, 44.5033339));
GMapPolygon polygon2 = new GMapPolygon(polygonPoints2, "polygon2");
polygon2.Stroke.Color = Color.Green;
polygons.Polygons.Add(polygon2);
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New Post: AltSketch Render

July 26, 2014, 6:57 am
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Hi again from AltSoftLab Team!

In about a year we got many new features in our AltSketch Graphics Library. First of all we get HW Render Backends in many Graphics Platforms and Mobile Platforms (Windows Phone, Android, iOS). Also all AltSketch Extensions are open sourced now. You are welcome!

Unity Game Engine
Windows Phone
Android
iOS
Silverlight / Moonlight
XNA / MonoGame
OGRE 3D Engine
Axiom 3D Engine
NeoAxis 3D Engine
Irrlicht 3D Engine
OpenTK / AltOpenTK
SdlDotNet / AltSdlDotNet
SharpDX
Windows Forms (throw System.Drawing, OpenGL, DirectX, DirectDraw)
WPF (throw System.Windows.Media, OpenGL, DirectX, DirectDraw)
GTK (throw Gtk.Image, OpenGL)
Qt: Qyoto & Qt4Dotnet​ (throw Qt.Image, OpenGL)
wxWidgets (throw wxWidgets.Image)

AltSketch Unity GMap.NET Interactive
Image

AltSketch XNA MonoGame GMap.NET Interactive
Image

AltSketch OGRE GMap.NET Big Map Maker
Image

Johnny,
AltSoftLab Team!
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New Post: GMap.NET for Silverlight or webbased platform

July 28, 2014, 12:21 pm
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Hi guys!
I 've been using radioman's great Desktop tool for a while now, but now the customers and the market is leading everybody to work over a web site.
I have a couple of projects already working with gmaps.net, but now I would like to "Port" them to asp.net.
It would be great If anyone with ASP.NET Skill would post a more complete sample on how to use gmaps.net in a web site.

I keep trying to have something but here I must admit I am a bit lost.

Thank you all in advance.
Regards
HN
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New Post: Alternatives to GreatMaps

July 28, 2014, 12:30 pm
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Hey GreatMaps,

I'm trying to compile a list of mapping software that will fit my requirements for a desktop application I want to build.
I'm trying to build something similar to MissionPlanner: https://code.google.com/p/ardupilot-mega/wiki/Mission

Here is a quick moc-up I did for my application: http://i.imgur.com/52DaJtQ.png

Requirements:
  • I want to be flexible with what I can draw on the map: lines, rectangles, polygons
  • I want to be flexible with icons: they should be able to move, rotate
  • I want flexibility with icon interaction: for example, being able to easily drag a waypoint would be great
  • I want to be able to use my own data for maps: for example an aeronautical chart made from a folder of .tiff images
So far, GreatMaps in the front-runner, but to be fair, I want to weigh all my options.

Can anyone provide me a list of software with similar capability to GreatMaps?

Thanks,
jl
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New Post: New maps

July 28, 2014, 10:14 pm
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Any chances that a new map provider could be added to your great project?

WMS
http://tiles.kartat.kapsi.fi/peruskartta?
http://tiles.kartat.kapsi.fi/taustakartta?
http://tiles.kartat.kapsi.fi/ortokuva?

or

TMS
http://tiles.kartat.kapsi.fi/peruskartta/{zoom}/{x}/{y}.jpg
http://tiles.kartat.kapsi.fi/taustakartta/{zoom}/{x}/{y}.jpg
http://tiles.kartat.kapsi.fi/ortokuva/{zoom}/{x}/{y}.jpg

TMS uses EPSG:900913 and resides on the server in the following folders:
peruskartta_3067-, ortokuva_3067- ja taustakartta_3067

Ps:
I checked out the src code for YandexMapProviderBase class as an implementation example and stumbled upon the Guid object which I don't understand where you get the string id from + other details I felt unsure about ;)

Kind regards, icy
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New Post: New maps

July 29, 2014, 4:33 am
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thanks, i will add it as soon as i get the time to do so...

in the mean time you can make a fork to share the code
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Updated Wiki: Home

July 29, 2014, 4:42 am
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...radioman is currently unresponsive, sorry for that. Cornwall exploration mission is in progress, great maps helps greatly! ;}

GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding, directions and maps from Coogle, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yendux, Mapy.cz, Maps.lt, iKarte.lv, NearMap, OviMap, CloudMade, WikiMapia, MapQuest in Windows Forms & Presentation, supports caching and runs on windows mobile!

 Absolutely Fantastic Piece of Work. - share your projects,say thanks ;} 

Preview:

  • gmap1512.png

The Greatest maps in the world:

Powered by:  
Rule.png
OpenStreetMapbingCoogle mapsyahoo 
Maps.ltMapy.czVisit The Venus ProjectyenduxpergosqliteMySQLmssql server

freedom!CloudMadeOVI mapsArcGISNearMapWikiMapia
Rule.png
explore The Zeitgeist Movement
Support: …journey of I AMcopy me ;}

encourage project support ;}Ohloh profile for radiomanhistory

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New Post: New maps

July 29, 2014, 6:07 am
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Fork: icybridge/Kapsi done.

Some user requirements from the licence holder apply and are:

1. Name of licence holder must show on the map(s) --> Maanmittauslaitos
Instead of the full name the MML abbreviation is in my opinion preferable and is actually used on a testmap from the map provider itself. On that map the "MML" is a link tohttp://www.maanmittauslaitos.fi. Why not link it to the licence file directly and we get rid of req 4...

2. Name of map content.
Should be enough to use --> Peruskarttarasteri, Taustakartta, Ortoilmakuva in the list of providers. For instance:Kapsi_Ortoilmakuva

3. The date of the content has to be viewable somehow. Perhaps could be hard coded to the name above?



Icy


Sent from my iPad

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New Post: How to pan with GMap

August 2, 2014, 4:41 pm
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I know how to zoom, but how can I enable the user to pan up, down, left, right?
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New Post: Gmap Custom Image Marker C#

August 9, 2014, 3:38 am
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First i need to say that
"Radioman We Love You"

Here a class sample for your C# Gmap Project. You can use it for creating markers with specific images.
Just Create a class named GMapCustomImageMarker and copy that code in it. And boom! you're ready.
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using GMap.NET.WindowsForms;
namespace GMap.NET.WindowsForms.Markers
{

    public class GMapCustomImageMarker : GMapMarker
    {
        private Image _image;

        public GMapCustomImageMarker(Image Image, PointLatLng p)
            : base(p)
        {
            _image = Image;
        }

        public override void OnRender(Graphics g)
        {
            g.DrawImage(_image, new Point(LocalPosition.X - _image.Width / 2, LocalPosition.Y - _image.Height / 2));
        }
    }
}
For using marker
public void gmapMarkerWithImage(double lat, double lon)
        {
            Image markerImage = Image.FromFile("C:/Users/volkan/Desktop/Map-Marker-Flag--Left-Azure.png");
            GMapCustomImageMarker marker = new GMapCustomImageMarker(markerImage,new PointLatLng( lat,lon));
            marker.ToolTipMode = MarkerTooltipMode.OnMouseOver;
            marker.ToolTipText = "" + (markersOverlay.Markers.Count + 1);

            if (mapExplorer.Overlays.Contains(markersOverlay))
            {
                markersOverlay.Markers.Add(marker);
            }
            else
            {
                markersOverlay.Markers.Add(marker);
                mapExplorer.Overlays.Add(markersOverlay);
            }

            mapExplorer.Position = new PointLatLng(lat, lon);

        }
Thats it. Good Luck with your project.
Best Regards.
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New Comment on "GMap.NET.WindowsForms"

August 9, 2014, 12:12 pm
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Can you suggest me some other tutorial? great proyect!
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New Post: should I add classes

August 9, 2014, 1:23 pm
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New Post: BingMapProvider Blue Tiles Error 499

August 15, 2014, 7:39 am
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Greetings,

I have recently started working on an application for my team to use to help us proactively monitor some of our customers sites using a map interface.

GMaps has been wonderful and is very easy to use, however, each day I come in to work on my project the map will load a hadnful of times and then stops.

It then fills my GMapControl with blue tiles that read "Exception:The remote server returned an error:(499) Failclose."

I am trying to use BingMaps, and I have obtained a key from bing. However it does this on any MapProvider I try to use.

Not sure if my code is wrong(Followed the demo) or if im having some sort of firewall issue(I have turned off my machines firewall temporarily to no avail)

My Code:
GMap.NET.MapProviders.BingMapProvider.Instance.ClientKey = "my_key_goes_here";
            gmap.MapProvider = GMap.NET.MapProviders.BingMapProvider.Instance;

            GMap.NET.GMaps.Instance.Mode = GMap.NET.AccessMode.ServerOnly;
            
            gmap.Position = new PointLatLng(41.088327, -96.4748517);
Please advise.
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New Post: BingMapProvider Blue Tiles Error 499

August 15, 2014, 7:59 am
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I just rebooted, and ran my app again, and now I get Error (400) bad request.

This is very frustrating, as I can find no information on what these errors mean...
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Commented Issue: Bearing [16044]

August 15, 2014, 12:13 pm
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Bearing was not working at least since 1.6. I'm not sure if I'm doing it correctly but now ti's working for me.

since it's only in 1 file, I'll paste the diff here.

--- C:/Users/JFDionne/Downloads/greatmaps-6ccafda5ce5d/greatmaps_6ccafda5ce5d/GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapControl.cs Mon Jul 16 16:13:00 2012
+++ GMapControl.cs Mon Jul 16 17:58:47 2012
@@ -1112,10 +1112,17 @@
{
if(IsHandleCreated)
{
- // need to fix in rotated mode usinf rotationMatrix
- // ...
- Core.DragOffset(new GPoint(x, y));
+ if (IsRotated)
+ {
+ System.Drawing.Point[] p = new System.Drawing.Point[] { new System.Drawing.Point(x, y) };
+ rotationMatrixInvert.TransformVectors(p);
+ x = (int)p[0].X ;
+ y = (int)p[0].Y ;
+
+ }

+ Core.DragOffset(new GPoint(x, y));
+
ForceUpdateOverlays();
}
}
@@ -1385,6 +1392,8 @@
e.Graphics.TranslateTransform(Core.renderOffset.X, Core.renderOffset.Y);

DrawMap(e.Graphics);
+ e.Graphics.ResetTransform();
+ e.Graphics.TranslateTransform(Core.renderOffset.X, Core.renderOffset.Y);
OnPaintOverlays(e.Graphics);

#endregion
@@ -1451,45 +1460,45 @@
}
set
{
- //if(Core.bearing != value)
- //{
- // bool resize = Core.bearing == 0;
- // Core.bearing = value;
+ if (Core.bearing != value)
+ {
+ bool resize = Core.bearing == 0;
+ Core.bearing = value;

- // //if(VirtualSizeEnabled)
- // //{
- // // c.X += (Width - Core.vWidth) / 2;
- // // c.Y += (Height - Core.vHeight) / 2;
- // //}
+ //if(VirtualSizeEnabled)
+ //{
+ // c.X += (Width - Core.vWidth) / 2;
+ // c.Y += (Height - Core.vHeight) / 2;
+ //}

- // UpdateRotationMatrix();
+ UpdateRotationMatrix();

- // if(value != 0 && value % 360 != 0)
- // {
- // Core.IsRotated = true;
+ if (value != 0 && value % 360 != 0)
+ {
+ Core.IsRotated = true;

- // if(Core.tileRectBearing.Size == Core.tileRect.Size)
- // {
- // Core.tileRectBearing = Core.tileRect;
- // Core.tileRectBearing.Inflate(1, 1);
- // }
- // }
- // else
- // {
- // Core.IsRotated = false;
- // Core.tileRectBearing = Core.tileRect;
- // }
+ if (Core.tileRectBearing.Size == Core.tileRect.Size)
+ {
+ Core.tileRectBearing = Core.tileRect;
+ Core.tileRectBearing.Inflate(1, 1);
+ }
+ }
+ else
+ {
+ Core.IsRotated = false;
+ Core.tileRectBearing = Core.tileRect;
+ }

- // if(resize)
- // {
- // Core.OnMapSizeChanged(Width, Height);
- // }
+ if (resize)
+ {
+ Core.OnMapSizeChanged(Width, Height);
+ }

- // if(!HoldInvalidation && Core.IsStarted)
- // {
- // ForceUpdateOverlays();
- // }
- //}
+ if (!HoldInvalidation && Core.IsStarted)
+ {
+ ForceUpdateOverlays();
+ }
+ }
}
}
#endif
@@ -1954,17 +1963,17 @@
else
{
#if !PocketPC
- Core.mouseCurrent = ApplyRotationInversion(e.X, e.Y);
+ Core.mouseCurrent = ApplyRotationInversion(e.X, e.Y);
#else
Core.mouseCurrent = new GPoint(e.X, e.Y);
#endif
Core.Drag(Core.mouseCurrent);

#if !PocketPC
- if(MobileMode)
- {
+ //if(MobileMode)
+ //{
ForceUpdateOverlays();
- }
+ //}
#else
ForceUpdateOverlays();
#endif


Comments: radioman, I can confirm that this does seem to fix the map rotation issue (as far as I can tell from my tests). I've attached the updated WindowsForms.GMapControl.cs file. You can add it to the existing build or I can send you a fork :)
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