In our last post, we created an application that queried the GeoNames webservice and returned the results into a table. A logical next step would be to add the capability to map the results on a world map. So today will be use some of the code we already wrote for the WorldMapper project to add that functionality.
Here is how my final form looked after I added a world map picture and 2 new buttons:
In this demonstration, a simple C# application will be created to search the GeoNames database and display the results in tabular form. Let’s begin by creating a new Windows Application in Visual C# Express.
A simple form can be set up to capture the necessary input parameters: location name, country, and the number of rows returned. At the bottom of the form, add a DataGridView control to display the XML results. My completed form looks like this:
Geonames.org is a great resource for free geographic information. It is a collection of millions of locations that can be searched online or downloaded for offline use. In this project, we will build a simple application to query the Geonames web service and display the results in a table and on a map.
