The Geometry has no Z values 解决办法

from:http://dufan20086.blog.163.com/blog/static/6616452320145269343675/

我们在创建要素时，简单的IFeatureClass.CreateFeature之后，然后把IGeometry对象赋给Feature.shape，会引发“The Geometry has no Z values”的错误提示。类似的错误在做地图标注过程中也会出现。

本文所采用的解决办法参考了网上的一些资料：

http://blog.sina.com.cn/s/blog_6faf711d010138vq.html

http://hi.baidu.com/luoyuonline/item/2994bafc08e10f0dd99e7256

基本思路就是在CreateFeature之后，设置Z值（顺带将M值也一并设置）。

/// <summary>

        /// 设置Z值和M值，解决The Geometry has no Z values错误

        /// </summary>

        /// <param name="pF">要素</param>

        /// <param name="pGeo">几何</param>

        public static void SetZValue(IFeature pF, IGeometry pGeo)

        {

            int index;

            index = pF.Fields.FindField("Shape");

            IGeometryDef pGeometryDef;

            pGeometryDef = pF.Fields.get_Field(index).GeometryDef as IGeometryDef;

            if (pGeometryDef.HasZ)

            {

                IZAware pZAware = (IZAware)pGeo;

                pZAware.ZAware = true;

                //IZ iz1 = (IZ)pGeo;

                //iz1.SetConstantZ(0);  //将Z值设置为0

//在ArcEngine10.2中用下面的两行代码来设置

                IPoint point = (IPoint)pGeo;

                point.Z = 0;

            }

            else

            {

                IZAware pZAware = (IZAware)pGeo;

                pZAware.ZAware = false;

            }

            //M值

            if (pGeometryDef.HasM)

            {

                IMAware pMAware = (IMAware)pGeo;

                pMAware.MAware = true;

            }

            else

            {

                IMAware pMAware = (IMAware)pGeo;

                pMAware.MAware = false;

            }

        }//function