gistfile1.cs

//This example uses functions in the MightyLittleGeodesy library by Björn Sållarp (C), licensed under the MIT License. 

using MightyLittleGeodesy.Positions;

[...]

//Assign WGS84 values 
WGS84Position wgs84_lat_lon_start = new WGS84Position(59.30,15.30);
WGS84Position wgs84_lat_lon_end = new WGS84Position(59.80,16.90);

//Convert WGS84 values to SWEREF99
SWEREF99Position sweref99_lat_lon_start = new SWEREF99Position(wgs84_lat_lon_start, SWEREF99Position.SWEREFProjection.sweref_99_tm);
SWEREF99Position sweref99_lat_lon_end = new SWEREF99Position(wgs84_lat_lon_end, SWEREF99Position.SWEREFProjection.sweref_99_tm);

//Extract lat_start, lat_end, lon_start and _lat_end for SWEREF99 search
double sweref99_lat_start = sweref99_lat_lon_start.Latitude;
double sweref99_lat_end = sweref99_lat_lon_end.Latitude;
double sweref99_lon_start = sweref99_lat_lon_start.Longitude;
double sweref99_lon_end = sweref99_lat_lon_end.Longitude;