【036】◀▶ 自己写的程序源代码

●·● 目录：

A1 ………… ESRI_01.zip
A2 ………… 实现：新建shapefile文件
A3 ………… 实现：只显示筛选的要素（IFeatureLayerDefinition）
A4 ………… 实现：高亮显示筛选的要素（IFeatureSelection）
A5 ………… 实现：类似 ArcMap 中 Identify 工具的效果（IIdentify、IArray、IIdentifyObj）
A6 ………… 实现：在 MapControl 上绘制几何图形

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Visual Studio 2008 + ArcGIS Engine 9.3

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╠════╣   返回目录   ╠══════════════════════════════════════════════════╣
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① 点击下载： >->-> ESRI_01.zip <-<-<  标注：实现了基本 GIS 功能，部分截图如下！

 

全局：

鹰眼：

自定义工具对话框：

面符号：

线符号：

点符号：

右键菜单：

图层属性表：

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Visual Studio 2010 + ArcGIS Engine 10.0

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            ╔════════╗
╠════╣   返回目录   ╠══════════════════════════════════════════════════╣
            ╚════════╝

② 点击下载： >->-> NewPoints.zip <-<-<  标注：实现新建shapefile文件，部分截图如下！

 

属性截图如下：

实现步骤：

• 新建工作空间工厂 IWorkspaceFactory！（矢量数据）
• 新建要素工作空间 IFeatureWorkspace！　　<IWorkspaceFactory.OpenFromFile()>
• 若指定的文件名存在了，则将其内部的数据删除！　　<IDataset.Delete()>
• 为要素集新建字段 IFields！
• 新建要素集 IFeatureClass！　　<IFeatureWorkspace.CreateFeatureClass()>
• 新建要素 IFeature！　　<IFeatureClass.CreateFeature()>

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using System.IO;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.Geometry;

namespace NewPoints
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 保存文件的完整路径
        /// </summary>
        string saveFullPath = string.Empty;

        private void button1_Click(object sender, EventArgs e)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.InitialDirectory = Directory.GetCurrentDirectory();
            sfd.Filter = "Shp文件(*.shp)|*.shp";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                saveFullPath = sfd.FileName;
            }
            textBox1.Text = saveFullPath;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            IFeatureLayer pFeatureLayer = CreateShpFromPoint(saveFullPath);
            pFeatureLayer.Name = "Point";
            axMapControl1.Map.AddLayer(pFeatureLayer);
        }

        private IFeatureLayer CreateShpFromPoint(string outfileNamePath)
        {
            string folder = System.IO.Path.GetDirectoryName(outfileNamePath);
            string file = System.IO.Path.GetFileName(outfileNamePath);

            IWorkspaceFactory pWSF = new ShapefileWorkspaceFactoryClass();
            IFeatureWorkspace pFWS = pWSF.OpenFromFile(folder, 0) as IFeatureWorkspace;

            if (File.Exists(outfileNamePath))
            {
                IFeatureClass featureClass = pFWS.OpenFeatureClass(file);
                IDataset pDataset = featureClass as IDataset;
                pDataset.Delete();
            }

            IFields pFields = new FieldsClass();
            IFieldsEdit pFieldsEdit = pFields as IFieldsEdit;

            IField pField = new FieldClass();
            IFieldEdit pFieldEdit = pField as IFieldEdit;
            pFieldEdit.Name_2 = "Shape";
            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
            IGeometryDef pGeometryDef = new GeometryDefClass();
            IGeometryDefEdit pGeometryDefEdit = pGeometryDef as IGeometryDefEdit;
            pGeometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
            pFieldEdit.GeometryDef_2 = pGeometryDef;
            pFieldsEdit.AddField(pField);

            pField = new FieldClass();
            pFieldEdit = pField as IFieldEdit;
            pFieldEdit.Name_2 = "X";
            pFieldEdit.Length_2 = 20;
            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;
            pFieldsEdit.AddField(pField);

            pField = new FieldClass();
            pFieldEdit = pField as IFieldEdit;
            pFieldEdit.Name_2 = "Y";
            pFieldEdit.Length_2 = 20;
            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;
            pFieldsEdit.AddField(pField);

            IFeatureClass pFeatureClass = pFWS.CreateFeatureClass(file, pFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
            
            for (int i = 0; i < 100;i+=10 )
            {
                for (int j = 0; j < 100;j+=10 )
                {
                    IPoint pPoint = new PointClass();
                    pPoint.PutCoords(i, j);
                    IFeature pFeature = pFeatureClass.CreateFeature();
                    pFeature.Shape = pPoint as IPoint;
                    pFeature.set_Value(pFeature.Fields.FindField("X"), i.ToString());
                    pFeature.set_Value(pFeature.Fields.FindField("Y"), j.ToString());
                    pFeature.Store();
                }
            }

            IFeatureLayer pFeatureLayer = new FeatureLayerClass();
            pFeatureLayer.FeatureClass = pFeatureClass;
            return pFeatureLayer;
        }
    }
}