【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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[b]Visual Studio 2008 + ArcGIS Engine 9.3[/b]

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╠════╣ 返回目录 ╠══════════════════════════════════════════════════╣
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[b]①[/b] 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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[b]Visual Studio 2010 + ArcGIS Engine 10.0[/b]

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

[b]②[/b] 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;
}
}
}