/// <summary>
/// Takes an array of simple polygons and combines them into one multi-part shape.
/// </summary>
/// <param name="parts">The array of polygons.</param>
/// <param name="resultShp">The resulting multi-part shape.</param>
public static void CombineParts(ref IFeature[] parts, ref IFeature resultShp)
{
int numParts = parts.Length;
Polygon po = new Polygon(parts[0].Coordinates);
Polygon poly;
for (int i = 0; i <= numParts - 1; i++)
{
poly = new Polygon(parts[i].Coordinates);
po = poly.Union(po) as Polygon;
}
resultShp = new Feature(po);
}
