C# 加载Shp文件到MapControl控件

加载Shp文件到地图控件MapControl有一般有两种方式。

1、用MapControl控件的AddShapeFile方法可加载Shape格式文件，调用该方法需要传入两个参数，分别是文件路径和不带扩展名的文件名，其调用方法如下：

axMapControl1.AddShapeFile(pathName, fileName);

    利用此方法加载Shape文件时，可能会报未知错误，试试：将LicenseControl控件拖入窗体。

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1.    private void AddShp(object sender, EventArgs e)  
2.    {  
3.        //利用文件对话框选择加载的shp文件路径  
4.        OpenFileDialog OpenFdlg = new OpenFileDialog();  
5.        OpenFdlg.Title = "选择shp文件";  
6.        OpenFdlg.Filter = "Shape格式文件（*.shp）|*.shp";  
7.        OpenFdlg.ShowDialog();  
8.        string strFileName = OpenFdlg.FileName;  
9.        if (strFileName == string.Empty)  
10.        {  
11.            return;  
12.        }  
13. //将Shp文件的路径分割为路径和不带格式后缀的文件名  
14.        string pathName = System.IO.Path.GetDirectoryName(strFileName);  
15.        string fileName = System.IO.Path.GetFileNameWithoutExtension(strFileName);  
16.   
17. ////下面两行为默认指定文件路径和文件名  
18.        //string pathName = @"E:\HiOS\DataSHP";  
19.        //string fileName = "River_X";  
20.        axMapControl1.AddShapeFile(pathName, fileName);  
21.        axMapControl1.Extent = axMapControl1.FullExtent;  
22.    }  

        private void AddShp(object sender, EventArgs e)        {            //利用文件对话框选择加载的shp文件路径            OpenFileDialog OpenFdlg = new OpenFileDialog();            OpenFdlg.Title = "选择shp文件";            OpenFdlg.Filter = "Shape格式文件（*.shp）|*.shp";            OpenFdlg.ShowDialog();            string strFileName = OpenFdlg.FileName;            if (strFileName == string.Empty)            {                return;            }    //将Shp文件的路径分割为路径和不带格式后缀的文件名            string pathName = System.IO.Path.GetDirectoryName(strFileName);            string fileName = System.IO.Path.GetFileNameWithoutExtension(strFileName);    ////下面两行为默认指定文件路径和文件名            //string pathName = @"E:\HiOS\DataSHP";            //string fileName = "River_X";            axMapControl1.AddShapeFile(pathName, fileName);            axMapControl1.Extent = axMapControl1.FullExtent;        }

2、也可以利用工作空间工厂打开Shape格式文件

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1. private void AddShpData(object sender, EventArgs e)  
2. {  
3.     //利用文件对话框选择加载的shp文件路径  
4.     OpenFileDialog OpenFdlg = new OpenFileDialog();  
5.     OpenFdlg.Title = "选择shp文件";  
6.     OpenFdlg.Filter = "Shape格式文件（*.shp）|*.shp";  
7.     OpenFdlg.ShowDialog();  
8.     string strFileName = OpenFdlg.FileName;  
9.     if (strFileName == string.Empty)  
10.     {  
11.         return;  
12.     }  
13.   
14.     string pathName = System.IO.Path.GetDirectoryName(strFileName);  
15.     string fileName = System.IO.Path.GetFileNameWithoutExtension(strFileName);  
16.       
17.     //声明Shape文件工作空间工厂，并获取要素工作空间，加载要素类  
18.     IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();  
19.     IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pathName, 0);  
20.     IFeatureWorkspace pFeatureWorkspace;  
21.     pFeatureWorkspace = pWorkspace as IFeatureWorkspace;  
22.     IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);  
23.     IDataset pDataset = pFeatureClass as IDataset;  
24.   
25.     //声明要素图层，设置相应属性  
26.     IFeatureLayer pFeatureLayer = new FeatureLayerClass();  
27.     pFeatureLayer.FeatureClass = pFeatureClass;  
28.     pFeatureLayer.Name = pDataset.Name;  
29.   
30.     //将要素图层转为图层，Add to MapControl   
31.     ILayer pLayer = pFeatureLayer as ILayer;  
32.     axMapControl1.Map.AddLayer(pLayer);  
33. }  

        private void AddShpData(object sender, EventArgs e)        {            //利用文件对话框选择加载的shp文件路径            OpenFileDialog OpenFdlg = new OpenFileDialog();            OpenFdlg.Title = "选择shp文件";            OpenFdlg.Filter = "Shape格式文件（*.shp）|*.shp";            OpenFdlg.ShowDialog();            string strFileName = OpenFdlg.FileName;            if (strFileName == string.Empty)            {                return;            }            string pathName = System.IO.Path.GetDirectoryName(strFileName);            string fileName = System.IO.Path.GetFileNameWithoutExtension(strFileName);                        //声明Shape文件工作空间工厂，并获取要素工作空间，加载要素类            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();            IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pathName, 0);            IFeatureWorkspace pFeatureWorkspace;            pFeatureWorkspace = pWorkspace as IFeatureWorkspace;            IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);            IDataset pDataset = pFeatureClass as IDataset;            //声明要素图层，设置相应属性            IFeatureLayer pFeatureLayer = new FeatureLayerClass();            pFeatureLayer.FeatureClass = pFeatureClass;            pFeatureLayer.Name = pDataset.Name;            //将要素图层转为图层，Add to MapControl             ILayer pLayer = pFeatureLayer as ILayer;            axMapControl1.Map.AddLayer(pLayer);        }