代码:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; // using System.IO; using OSGeo.GDAL; using OSGeo.OGR; using OSGeo.OSR; using System.Collections; namespace GdalReadSHP { /// <summary> /// 定义SHP解析类 /// </summary> public class ShpRead { /// 保存SHP属性字段 public OSGeo.OGR.Driver oDerive; public List<string> m_FeildList; private Layer oLayer; public string sCoordiantes; public ShpRead() { m_FeildList = new List<string>(); oLayer = null; sCoordiantes = null; } /// <summary> /// 初始化Gdal /// </summary> public void InitinalGdal() { // 为了支持中文路径 Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "YES"); // 为了使属性表字段支持中文 Gdal.SetConfigOption("SHAPE_ENCODING", ""); Gdal.AllRegister(); Ogr.RegisterAll(); oDerive = Ogr.GetDriverByName("ESRI Shapefile"); if (oDerive == null) { MessageBox.Show("文件不能打开,请检查"); } } /// <summary> /// 获取SHP文件的层 /// </summary> /// <param name="sfilename"></param> /// <param name="oLayer"></param> /// <returns></returns> public bool GetShpLayer(string sfilename) { if (null == sfilename || sfilename.Length <= 3) { oLayer = null; return false; } if (oDerive == null) { MessageBox.Show("文件不能打开,请检查"); } DataSource ds = oDerive.Open(sfilename, 1); if (null == ds) { oLayer = null; return false; } int iPosition = sfilename.LastIndexOf("\"); string sTempName = sfilename.Substring(iPosition + 1, sfilename.Length - iPosition - 4 - 1); oLayer = ds.GetLayerByName(sTempName); if (oLayer == null) { ds.Dispose(); return false; } return true; } /// <summary> /// 获取所有的属性字段 /// </summary> /// <returns></returns> public bool GetFeilds() { if (null == oLayer) { return false; } m_FeildList.Clear(); wkbGeometryType oTempGeometryType = oLayer.GetGeomType(); List<string> TempstringList = new List<string>(); // FeatureDefn oDefn = oLayer.GetLayerDefn(); int iFieldCount = oDefn.GetFieldCount(); for (int iAttr = 0; iAttr < iFieldCount; iAttr++) { FieldDefn oField = oDefn.GetFieldDefn(iAttr); if (null != oField) { m_FeildList.Add(oField.GetNameRef()); } } return true; } /// <summary> /// 获取某条数据的字段内容 /// </summary> /// <param name="iIndex"></param> /// <param name="FeildStringList"></param> /// <returns></returns> public bool GetFeildContent(int iIndex, out List<string> FeildStringList) { FeildStringList = new List<string>(); Feature oFeature = null; if ((oFeature = oLayer.GetFeature(iIndex)) != null) { FeatureDefn oDefn = oLayer.GetLayerDefn(); int iFieldCount = oDefn.GetFieldCount(); // 查找字段属性 for (int iAttr = 0; iAttr < iFieldCount; iAttr++) { FieldDefn oField = oDefn.GetFieldDefn(iAttr); string sFeildName = oField.GetNameRef(); #region 获取属性字段 FieldType Ftype = oFeature.GetFieldType(sFeildName); switch (Ftype) { case FieldType.OFTString: string sFValue = oFeature.GetFieldAsString(sFeildName); string sTempType = "string"; FeildStringList.Add(sFValue); break; case FieldType.OFTReal: double dFValue = oFeature.GetFieldAsDouble(sFeildName); sTempType = "float"; FeildStringList.Add(dFValue.ToString()); break; case FieldType.OFTInteger: int iFValue = oFeature.GetFieldAsInteger(sFeildName); sTempType = "int"; FeildStringList.Add(iFValue.ToString()); break; default: //sFValue = oFeature.GetFieldAsString(ChosenFeildIndex[iFeildIndex]); sTempType = "string"; break; } #endregion } } return true; } /// <summary> /// 获取数据 /// </summary> /// <returns></returns> public bool GetGeometry(int iIndex) { if (null == oLayer) { return false; } int iFeatureCout = oLayer.GetFeatureCount(0); Feature oFeature = null; oFeature = oLayer.GetFeature(iIndex); // Geometry Geometry oGeometry = oFeature.GetGeometryRef(); wkbGeometryType oGeometryType = oGeometry.GetGeometryType(); switch (oGeometryType) { case wkbGeometryType.wkbPoint: oGeometry.ExportToWkt(out sCoordiantes); sCoordiantes = sCoordiantes.ToUpper().Replace("POINT (", "").Replace(")", ""); break; case wkbGeometryType.wkbLineString: case wkbGeometryType.wkbLinearRing: oGeometry.ExportToWkt(out sCoordiantes); sCoordiantes = sCoordiantes.ToUpper().Replace("LINESTRING (", "").Replace(")", ""); break; default: break; } return false; } }//END class }
在program.cs中调用。
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Windows.Forms; using OSGeo.GDAL; using OSGeo.OGR; using OSGeo.OSR; using System.Collections; namespace GdalReadSHP { class Program { static void Main(string[] args) { string sShpFileName = @"D:VRMap6_Dataline92RainMainPipe.shp"; ShpRead m_Shp = new ShpRead(); // 初始化GDAL和OGR m_Shp.InitinalGdal(); // m_Shp.GetShpLayer(sShpFileName); // 获取所有属性字段名称,存放在m_FeildList中 m_Shp.GetFeilds(); List<string> FeildStringList = null; m_Shp.GetFeildContent(0, out FeildStringList); // 获取某条FID的数据 m_Shp.GetGeometry(0); MessageBox.Show(m_Shp.sCoordiantes); } } } 一开始自己疏忽了,总是报错。最后才发现,自己没初始化GDAL和OGR,我类个去!! [csharp] view plain copy 在CODE上查看代码片派生到我的代码片 /// <summary> /// 初始化Gdal /// </summary> public void InitinalGdal() { // 为了支持中文路径 Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO"); // 为了使属性表字段支持中文 Gdal.SetConfigOption("SHAPE_ENCODING", ""); Gdal.AllRegister(); Ogr.RegisterAll(); oDerive = Ogr.GetDriverByName("ESRI Shapefile"); if (oDerive == null) { MessageBox.Show("文件不能打开,请检查"); } }
转载:https://blog.csdn.net/sinat_32349327/article/details/55504954