GDAL------加载Shapefile文件

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 <= )
            {
                oLayer = null;
                return false;
            }
            if (oDerive == null)
            {
                MessageBox.Show("文件不能打开，请检查");
            }
            DataSource ds = oDerive.Open(sfilename, );
            if (null == ds)
            {
                oLayer = null;
                return false;
            }
            int iPosition = sfilename.LastIndexOf("\\");
            string sTempName = sfilename.Substring(iPosition + , sfilename.Length - iPosition -  - );
            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 = ; 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 = ; 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();
            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_Data\line92\RainMainPipe.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(, out FeildStringList);  

            // 获取某条FID的数据
            m_Shp.GetGeometry();
            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