C#用GDAL创建SHP文件，升成的PRJ文件在ARCGIS中不识别的问题_gdal生成的shp文件要素范围不正确-优快云博客

本文链接：https://blog.youkuaiyun.com/xiabin68/article/details/132239464

文章讲述了如何在使用GDAL创建SHP文件时，解决由SpatialReference类创建的坐标系统PRJ文件在不同ARCGIS版本中识别问题，关键在于确保PRJ文件以ASCII编码保存。提供了一段代码示例，说明了在ARCGIS10.6中通过ASCII编码实现文件识别的方法。

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在用GDAL创建SHP文件时，用SpatialReference类创建的坐标系统，在升成时会有一个PRJ文件，但是该文件在用ARCGIS不会被识别，原因为ARCGIS版本不一样所识别的文件也不一样）采用另外一种方法，直接升成PRJ文件，该文件必须要按照ASCII码升成，否则ARCGIS不识别
思路，用坐标取带号，该方法只对带上带号的2000高期吕克坐标系有用。

int dh = Convert.ToInt16(zb[0].X.ToString().Substring(0, 2));
string wkt = 
                                "PROJCS[\"CGCS2000 / 3-degree Gauss-Kruger zone"+dh.ToString() +"\"," +
                                "GEOGCS[\"China Geodetic Coordinate System 2000\"," +
                                "DATUM[\"China_2000\"," +
                                "SPHEROID[\"CGCS2000\",6378137.0,298.257222101]]," + 
                                "PRIMEM[\"Greenwich\",0.0]," +
                                "UNIT[\"Degree\",0.0174532925199433]]," +
                                "PROJECTION[\"Gauss_Kruger\"]," +
                                "PARAMETER[\"False_Easting\","+dh.ToString()+"500000.0]," +
                                "PARAMETER[\"False_Northing\",0.0]," +
                                "PARAMETER[\"Central_Meridian\","+(dh*3).ToString("F1")+"]," +
                                "PARAMETER[\"Scale_Factor\",1.0]," +
                                "PARAMETER[\"Latitude_of_Origin\",0.0]," +
                                "UNIT[\"Metre\",1.0]]";
 string prjPath = zdPath + @"\ZD.prj";
 using (StreamWriter write = new StreamWriter(prjPath, false, Encoding.ASCII))
     {
         write.WriteLine(wkt);
     }