ArcEngine二次开发之投影变换

 using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.Geodatabase;  namespace CHN.gzGISer.ArcEngine {     public class CoordinateTransformation     {         public CoordinateTransformation()         {          }         /// <summary>         /// 投影坐标系转WGS84地理坐标系         /// </summary>         /// <param name="point"></param>         /// <returns></returns>         public static IPoint ProjectToWGS84(IPoint point)         {             ISpatialReferenceFactory pSpatialReferenceFactory = new SpatialReferenceEnvironmentClass();             ISpatialReference pSpatialReference = pSpatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);             point.Project(pSpatialReference);             return point;         }          /// <summary>         /// 投影坐标系转2000坐标系         /// </summary>         /// <param name="point"></param>         /// <param name="path">2000坐标prj文件</param>         /// <returns></returns>         public static IPoint ProjectToCGCS2000(IPoint point, string path)         {             ISpatialReferenceFactory pSpatialReferenceFactory = new SpatialReferenceEnvironmentClass();             ISpatialReference pSpatialReference = pSpatialReferenceFactory.CreateESRISpatialReferenceFromPRJFile(path);             point.Project(pSpatialReference);             return point;         }          /// <summary>         /// WGS84投影至其他         /// </summary>         /// <param name="point"></param>         /// <param name="pSpatialReference"></param>         /// <returns></returns>         public static IPoint Geo_WGS84ToOtherProject(IPoint point, ISpatialReference pSpatialReference)         {             point.Project(pSpatialReference);             return point;         }     } }  

文章来源: https://blog.csdn.net/RicardoMTan/article/details/91433198