Try n times

A method to call another method n times or until it returns true (success). Used to talk to wireless devices in a noisy environment where each call has a chance of failure. bool Try(int n, Func func) { do { if (func()) return true; n–; } while (n>0); return false; } Call it this way […]

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Update to SortableBindingList

I’ve been a using this implementation of the SortableBindingList by Tim Van Wassenhove for a few years now but recently I noticed that although making a change to the list updated all bound controls it did not update the backing collection. I switched back to a standard BindingList<T> in an attempt to resolve the issue and […]

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Comparing performance of GDAL and Proj.NET

There are two major free/open source projection libraries available for use under .NET: GDAL and Proj.NET. GDAL has a long history, and is written in C++, so it’s compiled to machine code. The C# bindings are generated by a tool. Calling C++ from C# uses a process called “pinvoke” (Platform Invoke), and a certain amount […]

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QuadTree

Introduction A QuadTree is a spatial partitioning strategy used to make queries on relationships between 2D spatial data such as coordinates in a Geographic Information System (GIS), or the location of objects in a video game. For instance, you may need to know all the objects within a region on a map, test whether objects are visible by […]

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