AE中Add-In插件开发实例

布满荆棘的人生 2022-05-24 03:11 213阅读 0赞

作为一个小白，在做Add-In开发时，网上资源比较少，最好的学习Add-In开发方法就是多看实例，在此分享我自己查找资料拼凑而成的一个实例，话不多说，精品如下：

该插件实现的功能是计算省会城市的空间可达性，计算公式为:

![70][]

具体参数的意义如下：

Ai为节点i的可达性水平，Ai的值越小，节点的可达性越好，反之越差。

Tij节点i通过某种交通方式到达节点j 的最短旅行时间;

Mj为节点城市的某种社会经济要素流的流量，表示该经济中心对周围地区的辐射和吸引力的高低，可采用人口规模、GDP总量等指标，文中采用各节点区域的GDP总量;

n为交通网络中除i点以外的节点总数。

窗口设计为：

![70 1][]

具体实现代码（只分享核心部分）：

using System;
    using System.IO;
    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.Geodatabase;
    using ESRI.ArcGIS.esriSystem;
    using ESRI.ArcGIS.Editor;
    using ESRI.ArcGIS.ArcMapUI;
    using ESRI.ArcGIS.Desktop;
    using ESRI.ArcGIS.Framework;
    using ESRI.ArcGIS.Controls;
    using ESRI.ArcGIS.Catalog;
    using ESRI.ArcGIS.DataManagementTools;
    using ESRI.ArcGIS.DataSourcesFile;
    using ESRI.ArcGIS.Display;
    using ESRI.ArcGIS.Search;
    using ESRI.ArcGIS.Maplex;
    using ESRI.ArcGIS.Carto;
    namespace space_accessiblity
    {
        public partial class Form1 : Form
        {
            private IApplication m_application;
            public Form1()
            {
                InitializeComponent();
            }
            //打开form2对话框，显示关于按钮的内容
            private void button4_Click(object sender, EventArgs e)
            {
                Form2 fm = new Form2();                                         
                fm.ShowDialog();
    
            }
            //帮助按钮
            private void button3_Click(object sender, EventArgs e)
            {
        
               System.Diagnostics.Process.Start(@"G:\kaifa\space_accessiblity\space_accessiblity\使用说明.docx");
               
               //System.Diagnostics.Process.Start("text1.txt", path1);
                /*string path1 = Application.StartupPath + "\\text1.txt";
                string content;
                using (FileStream stream = File.OpenRead(path1))
                {
                    using (StreamReader reader = new StreamReader(stream))
                    {
                        content = reader.ReadToEnd();
                    }
                }
                MessageBox.Show(content);*/
    
            }
            //实现单个城市空间可达性计算
            private void button1_Click(object sender, EventArgs e)
            {
                double sum = 0;
                double t = 0;
                double m = 0;
                double tm = 0;
                double access = 0;
    
                try
                {
                    
                    //设置地图对象
                    m_application = ArcMap.Application;
                    IDocument document = m_application.Document;
                    IMxDocument mapDocument = document as IMxDocument;
                    IMap map = mapDocument.FocusMap;
                    //选择图层
                    IFeatureLayer pFeatureLayer = map.get_Layer(1) as IFeatureLayer;
                    IFeatureClass FeatureClass = pFeatureLayer.FeatureClass;
                    //获取表中要素个数
                    //要素层转为要素选择
                    IFeatureSelection pFeatureSelection = (IFeatureSelection)pFeatureLayer;
                    //新建查询过滤器
                    IQueryFilter pQueryFilter = new QueryFilterClass();
                    //设置查询条件
                    pQueryFilter.WhereClause = "start='" + comboBox1.Text + "'";
                    pFeatureSelection.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);
                    //获取查询结果
                    ISelectionSet pSelectionSet = pFeatureSelection.SelectionSet;
                    //MessageBox.Show("一共查询到"+pSelectionSet.Count.ToString()+"个要素");
                    ICursor pCursor;
                    pSelectionSet.Search(null, false, out pCursor);
                    IFeatureCursor pFeatureCursor = (IFeatureCursor)pCursor;
                    IFeature ft = pFeatureCursor.NextFeature();
                    sum = Double.Parse(ft.get_Value(ft.Fields.FindField("GDP")).ToString());
                     t = Double.Parse(ft.get_Value(ft.Fields.FindField("time")).ToString());
                     m = Double.Parse(ft.get_Value(ft.Fields.FindField("GDP")).ToString());
                     tm = t * m;
                    //MessageBox.Show(ft.get_Value(ft.Fields.FindField("GDP")).ToString());
                    while (ft != null)
                    {
                        t = 0;
                        m = 0;
                        IFeature ft1 = pFeatureCursor.NextFeature();
                        sum = sum + Double.Parse(ft1.get_Value(ft1.Fields.FindField("GDP")).ToString());
                         t = Double.Parse(ft1.get_Value(ft1.Fields.FindField("time")).ToString());
                         m = Double.Parse(ft1.get_Value(ft1.Fields.FindField("GDP")).ToString());
                        tm = tm + t * m;
    
                    }
    
                }
                catch 
                {
                    access = tm / sum;
                    textBox1.Text = comboBox1.Text+"的交通可达性为"+Convert.ToString(access);
                    return;
                }
            }
    
            private void button2_Click(object sender, EventArgs e)
            {
                double sum2 = 0;
                double t2 = 0;
                double m2 = 0;
                double tm2 = 0;
                double access2 = 0;
                double sum3 = 0;
                double t3 = 0;
                double m3 = 0;
                double tm3 = 0;
                double access3 = 0;
                m_application = ArcMap.Application;
                    IDocument document = m_application.Document;
                    IMxDocument mapDocument = document as IMxDocument;
                    IMap map = mapDocument.FocusMap;
                    //选择图层
                    IFeatureLayer pFeatureLayer = map.get_Layer(1) as IFeatureLayer;
                    IFeatureClass FeatureClass = pFeatureLayer.FeatureClass;
                //comboBox2空间可达性
                
                try
                {
                    //要素层转为要素选择
                    IFeatureSelection pFeatureSelection = (IFeatureSelection)pFeatureLayer;
                    //新建查询过滤器
                    IQueryFilter pQueryFilter = new QueryFilterClass();
                    //设置查询条件
                    pQueryFilter.WhereClause = "start='" + comboBox2.Text + "'";
                    pFeatureSelection.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);
                    //获取查询结果
                    ISelectionSet pSelectionSet = pFeatureSelection.SelectionSet;
                    ICursor pCursor;
                    pSelectionSet.Search(null, false, out pCursor);
                    IFeatureCursor pFeatureCursor = (IFeatureCursor)pCursor;
                    IFeature ft = pFeatureCursor.NextFeature();
                     sum2 = Double.Parse(ft.get_Value(ft.Fields.FindField("GDP")).ToString());
                    t2 = Double.Parse(ft.get_Value(ft.Fields.FindField("time")).ToString());
                    m2 = Double.Parse(ft.get_Value(ft.Fields.FindField("GDP")).ToString());
                   tm2 = t2 * m2;
                    while (ft != null )
                    {
                        IFeature ft1 = pFeatureCursor.NextFeature();
                        sum2 = sum2 + Double.Parse(ft1.get_Value(ft1.Fields.FindField("GDP")).ToString());
                        t2 = Double.Parse(ft1.get_Value(ft1.Fields.FindField("time")).ToString());
                        m2 = Double.Parse(ft1.get_Value(ft1.Fields.FindField("GDP")).ToString());
                        tm2 = tm2 + t2 * m2;
                    }
                }
                catch 
                {
                    access2 = tm2 / sum2;          
                    return;
                }
                finally
                {
                    try
                    {
                        IFeatureSelection pFeatureSelection3 = (IFeatureSelection)pFeatureLayer;
                        IQueryFilter pQueryFilter3 = new QueryFilterClass();
                    //设置查询条件
                    pQueryFilter3.WhereClause = "start='" + comboBox3.Text + "'";
                    pFeatureSelection3.SelectFeatures(pQueryFilter3, esriSelectionResultEnum.esriSelectionResultNew, false);
                    //获取查询结果
                    ISelectionSet pSelectionSet3 = pFeatureSelection3.SelectionSet;
                    //MessageBox.Show("一共查询到"+pSelectionSet.Count.ToString()+"个要素");
                    ICursor pCursor3;
                    pSelectionSet3.Search(null, false, out pCursor3);
                    IFeatureCursor pFeatureCursor3 = (IFeatureCursor)pCursor3;
                    IFeature ft3 = pFeatureCursor3.NextFeature();
                    sum3 = Double.Parse(ft3.get_Value(ft3.Fields.FindField("GDP")).ToString());
                    // MessageBox.Show(sum3.ToString());
                    t3 = Double.Parse(ft3.get_Value(ft3.Fields.FindField("time")).ToString());
                    m3 = Double.Parse(ft3.get_Value(ft3.Fields.FindField("GDP")).ToString());
                    tm3 = t3 * m3;
                    while (ft3 != null)
                    {
                        t3 = 0;
                        m3 = 0;
                        IFeature ft4 = pFeatureCursor3.NextFeature();
                        sum3 = sum3 + Double.Parse(ft4.get_Value(ft4.Fields.FindField("GDP")).ToString());
                        t3 = Double.Parse(ft4.get_Value(ft4.Fields.FindField("time")).ToString());
                        m3 = Double.Parse(ft4.get_Value(ft4.Fields.FindField("GDP")).ToString());
                        tm3 = tm3 + t3 * m3;
                    }
                    }
                    catch
                    {
                    access3 = tm3 / sum3;
                    if (access2 > access3)
                    {
                        textBox1.Text = comboBox2.Text + "的交通可达性为" + Convert.ToString(access2) + "\r\n\n" + comboBox3.Text + "的交通可达性为" + Convert.ToString(access3) + "\r\n" + comboBox3.Text + "的交通可达性比" + comboBox2.Text + "大";
    
                    }
                    else
                    {
                        textBox1.Text = comboBox2.Text + "的交通可达性为" + Convert.ToString(access2) + "\r\n\n" + comboBox3.Text + "的交通可达性为" + Convert.ToString(access3) + "\r\n" + comboBox3.Text + "的交通可达性比" + comboBox2.Text + "小";
                    }
                        
                    
                    }   
    
                }
                
    
            }
        }
    }

[70]: /images/20220524/08b65f585ff44a6aa238c0449620c133.png
[70 1]: /images/20220524/1d241140594b4fe8a464ed1ac725b702.png