C#ArcEngine二次开发引入类似Arcmap内属性表内容的操作
请教 C#ArcEngine二次开发引入类似ArcMap对属性表内容操作的方法
通过其他博主的帮助，已经实现了属性表的生成
但是想要增加类似ArcMap对属性表内容的操作，比如缩放至所选项、增删改查等操作。最好可以基于下列代码进行功能添加
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
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;
namespace AutoPolyLine
{
public partial class AttributeTable : Form
{
ILayer mLayer; //**
private IFeatureLayer currentFeatureLayer;
public IFeatureLayer CurrentFeatureLayer
{
get { return currentFeatureLayer; }
set { currentFeatureLayer = value; }
}
//获取主窗体传入的地图
private IMap currentMap;
public IMap CurrentMap
{
get { return currentMap; }
set { currentMap = value; }
}
public AttributeTable(ILayer pLayerT) //**
{
InitializeComponent();
mLayer = pLayerT; //**
OpenAttributeTable();
}
private void AttributeTable_Load(object sender, EventArgs e)
{
OpenAttributeTable(); //自定义方法
}
public void OpenAttributeTable()
{
IFeatureLayer pFeatureLayer = mLayer as IFeatureLayer; //**
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass; //** using ESRI.ArcGIS.Geodatabase;
DataTable dt = new DataTable();
if (pFeatureClass != null)
{
DataColumn dc;
for (int i = 0; i < pFeatureClass.Fields.FieldCount; i++)
{
dc = new DataColumn(pFeatureClass.Fields.get_Field(i).Name);
dt.Columns.Add(dc);//获取所有列的属性值
}
IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);
IFeature pFeature = pFeatureCursor.NextFeature();
DataRow dr;
while (pFeature != null)
{
dr = dt.NewRow();
for (int j = 0; j < pFeatureClass.Fields.FieldCount; j++)
{
//判断feature的形状
if (pFeature.Fields.get_Field(j).Name == "Shape")
{
if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint)
{
dr[j] = "点";
}
if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline)
{
dr[j] = "线";
}
if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon)
{
dr[j] = "面";
}
}
else
{
dr[j] = pFeature.get_Value(j).ToString();//增加行
}
}
dt.Rows.Add(dr);
pFeature = pFeatureCursor.NextFeature();
}
}
this.dataGridView1.DataSource = dt;
}
}
}
基于最新版ChatGPT4的回答，望采纳!!!有其他问题也可以询问我哦、”(最新版更智能，功能更加强大)
为了实现缩放至所选项、增删改查等操作，您可以根据以下代码进行功能添加：
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
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;
namespace AutoPolyLine
{
public partial class AttributeTable : Form
{
ILayer mLayer;
private IFeatureLayer currentFeatureLayer;
private IMap currentMap;
private IActiveView activeView;
private DataTable dataTable;
public IFeatureLayer CurrentFeatureLayer
{
get { return currentFeatureLayer; }
set { currentFeatureLayer = value; }
}
public IMap CurrentMap
{
get { return currentMap; }
set { currentMap = value; }
}
public AttributeTable(ILayer pLayerT, IMap pMap)
{
InitializeComponent();
mLayer = pLayerT;
currentMap = pMap;
activeView = currentMap as IActiveView;
OpenAttributeTable();
}
private void AttributeTable_Load(object sender, EventArgs e)
{
OpenAttributeTable();
}
public void OpenAttributeTable()
{
// ... 保留原有代码 ...
this.dataGridView1.DataSource= dt;
dataTable = dt;
}
private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
ZoomToSelectedFeatures();
}
private void ZoomToSelectedFeatures()
{
DataGridViewSelectedRowCollection selectedRows = dataGridView1.SelectedRows;
if (selectedRows.Count > 0)
{
IFeatureLayer pFeatureLayer = mLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
IEnvelope envelope = new EnvelopeClass();
envelope.SetEmpty();
foreach (DataGridViewRow row in selectedRows)
{
int objectId = Convert.ToInt32(row.Cells["OBJECTID"].Value);
IFeature feature = pFeatureClass.GetFeature(objectId);
envelope.Union(feature.Shape.Envelope);
}
if (!envelope.IsEmpty)
{
envelope.Expand(1.2, 1.2, true);
activeView.Extent = envelope;
activeView.Refresh();
}
}
}
// 在此添加增删改查的相关操作方法
}
}
这段代码中，我添加了一个ZoomToSelectedFeatures方法，用于缩放至所选项。同时，我修改了AttributeTable构造函数，使其接收IMap参数，并在ZoomToSelectedFeatures方法中使用此参数进行缩放操作。
此外，您还可以根据需要添加增删改查的相关操作方法。在dataGridView1的事件处理程序中调用这些方法，以便在用户与属性表交互时执行相应操作。
要实现类似ArcMap对属性表内容的操作，可以在AttributeTable类中添加相应的方法。以下是一些常见的操作及其实现方法：
1. 缩放至所选项
在DataGridView中选中某一行时，可以通过获取该行对应的Feature的Geometry，然后调用IMap接口的ZoomTo方法实现缩放至该Feature。
具体实现方法如下：
csharp
private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
IFeature feature = GetSelectedFeature();
if (feature != null)
{
IEnvelope envelope = feature.Shape.Envelope;
envelope.Expand(1.2, 1.2, true);
IActiveView activeView = currentMap as IActiveView;
activeView.Extent = envelope;
activeView.Refresh();
}
}
}
private IFeature GetSelectedFeature()
{
int rowIndex = dataGridView1.SelectedRows[0].Index;
IFeature feature = null;
if (rowIndex >= 0 && rowIndex < currentFeatureLayer.FeatureClass.FeatureCount(null))
{
IFeatureCursor featureCursor = currentFeatureLayer.Search(null, false);
featureCursor.Skip(rowIndex);
feature = featureCursor.NextFeature();
}
return feature;
}
2. 增加行
在DataGridView中添加一行时，可以通过IFeatureClass接口的CreateFeature方法创建一个新的Feature，并将其添加到FeatureClass中。
具体实现方法如下：
csharp
private void btnAddRow_Click(object sender, EventArgs e)
{
IFeatureClass featureClass = currentFeatureLayer.FeatureClass;
IFeature feature = featureClass.CreateFeature();
for (int i = 0; i < featureClass.Fields.FieldCount; i++)
{
if (featureClass.Fields.get_Field(i).Editable)
{
feature.set_Value(i, "");
}
}
feature.Store();
OpenAttributeTable();
}
3. 删除行
在DataGridView中删除一行时，可以通过IFeatureClass接口的DeleteFeature方法删除对应的Feature。
具体实现方法如下：
csharp
private void btnDeleteRow_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
int rowIndex = dataGridView1.SelectedRows[0].Index;
IFeature feature = GetSelectedFeature();
if (feature != null)
{
IFeatureClass featureClass = currentFeatureLayer.FeatureClass;
featureClass.DeleteFeature(feature.OID);
OpenAttributeTable();
}
}
}
4. 修改行
在DataGridView中修改一行时，可以通过IFeature接口的set_Value方法修改对应的Feature的属性值。
具体实现方法如下：
csharp
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex >= 0 && e.ColumnIndex >= 0)
{
IFeature feature = GetSelectedFeature();
if (feature != null)
{
feature.set_Value(e.ColumnIndex, dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value);
feature.Store();
}
}
}
通过以上方法的实现，即可在AttributeTable中实现类似ArcMap对属性表内容的操作。
如果你想用代码来添加、删除或修改字段，你可以使用ArcPy模块，它是ArcGIS的Python接口。根据搜索结果1，你可以按照以下步骤用代码来操作字段：
导入arcpy模块，例如 import arcpy
指定要操作的表或要素类的路径，例如 table = r"C:\data\test.gdb\test_table"
要添加新字段，使用 arcpy.AddField_management 函数，指定字段名称、数据类型和其他属性，例如 arcpy.AddField_management(table, "A", "LONG", alias="Field A")
要删除字段，使用 arcpy.DeleteField_management 函数，指定要删除的字段名称，例如 arcpy.DeleteField_management(table, "B")
要修改字段属性，如名称、数据类型、别名等，使用 arcpy.AlterField_management 函数，指定要修改的字段名称和新的属性值，例如 arcpy.AlterField_management(table, "C", new_field_name="D", new_field_alias="Field D")
注意：要进行这些操作，你需要具有对数据的写入权限，并且当前未在 ArcMap 中编辑数据。另外，不同的数据源可能有不同的字段命名原则和限制。你可以参考这篇文档2了解更多细节。