# How Do I Sample for Wpf

### Description

The “How Do I?” samples collection is a comprehensive set containing dozens of interactive samples. Available in C#, these samples are designed to hit all the highlights of Map Suite, from simply adding a layer to a map to performing spatial queries and applying a thematic style. Consider this collection your “encyclopedia” of all the Map Suite basics and a great starting place for new users.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/thinkgeo_desktop_for_wpf) for the details.


### About the Code

Working…

### Getting Help

[ThinkGeo Desktop for Wpf Wiki Resources](http://wiki.thinkgeo.com/wiki/thinkgeo_desktop_for_wpf)

[ThinkGeo Desktop for Wpf Product Description](https://thinkgeo.com/ui-controls#desktop-platforms)

[ThinkGeo Community Site](http://community.thinkgeo.com/)

[ThinkGeo Web Site](http://www.thinkgeo.com)

### About ThinkGeo ThinkGeo is a GIS (Geographic Information Systems) company founded in 2004 and located in Frisco, TX. Our clients are in more than 40 industries including agriculture, energy, transportation, government, engineering, software development, and defense.

The purpose of this WPF sample is to get familiar with the concept of datum and datum shift in UTM and Geographic coordinates. Using local data, you might be required to apply datum transformation to your data to go from an old datum to a more recent datum. Here we are taking the example of Australia, which went to change its datum (from AGD84 to GDA94) for its mapping purposes. We show how to apply the datum transformation in both the longitude/latitude coordinate system and in the local UTM systems (AMG based on AGD84 and MGA based on GD94).

See the code and note the comments in the MouseMove event where all the projection logic is taken place. Notice that the correction is about 200 meters. Once you understand for the case for Australia, you will be able to apply the same principles for your own datums in UTM.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

In today’s Wpf project, we learn more about projection and how to handle a special case where the projection information in the PRJ file of a shapefile is not found as an EPSG or ESRI code in the spatial reference web site (www.spatial-reference.org). The strategy in this case is to build a proj4 string based on the parameters found in the PRJ file. Note that you must pay special attention to the false easting or northing parameters as they are always expressed in meters even if the projection is in another unit such as feet. For this example, we show how to convert from the local projection in Lambert Conformal Conic with regional specific parameters to Geodetic (WGS84) to match the World Map Kit.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

In this Wpf project, we show a new property of Overlay, WrapDatelineMode. This property that allows to continuously pan west or east with world map was already available in the dev branch. This concept was shown in the previous sample “WrapDatelineMode”. Now it is fully supported in Map Suite 5 and you can see in this sample how the behavior for the map in both Decimal Degrees (Lat/Long) and Spherical Mercator (Google Map/Bing map projection). In order to run this sample, you will need the latest release for Wpf with references to MapSuiteCore.dll and WpfDesktopEdition.dll.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

In today’s project, we show how to create your own projection class that allows projecting a layer from any internal projection to any external while doing a rotation at the same time. Having the capability to apply those two operations in one step may come handy if the original layer was created in a different projection with the north at an angle and you want to align it on the base map.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

In this Wpf project, we are showing a trick for getting the current extent of the map with Google Map as an image and displaying it on a map in decimal degrees unit. You may be in a situation where you want the details and accuracy of Google Map, especially the satellite view but want to have it displayed on your map in decimal degrees. In this sample, you will see how to get the Google Map image and create the accompanying world file for decimal degrees. Notice that we are realizing an affine transformation on the image to go to Geodetic as illustrated in the case 3

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

In this Wpf project, we explore more features of the GraticuleAdornmentLayer, which shows meridians and parallels at various intervals based on the zoom level. Being natively in Geodetic, GraticuleAdornmentLayer can be set to any projection. In this project’s example, you have the graticule showing with World Map Kit in Spherical Mercator (Google Map projection). Also, note how easily you can change the appearance with properties such as GraticuleLineStyle and GraticuleTextFont.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github

This WPF sample shows how to take advantage of the projection class WrapDatelineProjection for doing spatial queries when on a “virtual map”. From this spatial query example, the developer should understand how the same principle using the same projection class can be applied for other operations such as Spatial Queries, Identify, etc.

Please refer to [Wiki](http://wiki.thinkgeo.com/wiki/map_suite_desktop_for_wpf) for the details.

View this sample on Github