今天给大家分享一个AE属性表操作的程序源码,希望对有需要的筒子一定的帮助,小弟倍感荣幸!
好了,废话少说!首先说说实现了哪些操作吧……
实现的操作包括:1、打开属性表;2、编辑属性表;3、增加属性列;4、数据排序;5、字段计算……
嗯,实现的功能目前就这些吧,后续还会继续跟进,还望大家多多关注……下面就分功能说说我的实现方式吧……
1、打开属性表
属性表的打开是在TOC的右键菜单中打开的,首先新建一个类OpenAttribute,继承BaseCommand,OpenAttribute类的源码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.Controls;
namespace MapDemo
{
public sealed class OpenAttribute : BaseCommand
{
IMapControl3 m_mapControl;
AxMapControl _MapControl;
public OpenAttribute(AxMapControl pMapControl)
{
base.m_caption = "查看属性表";
_MapControl = pMapControl;
}
public override void OnClick()
{
formTable formtable = new formTable(_MapControl, m_mapControl);
formtable.Show();
}
public override void OnCreate(object hook)
{
m_mapControl = (IMapControl3)hook;
}
}
}
解释一下,AxMapControl参数是为了后面属性表操作时刷新视图的。接着在toc右键事件中添加代码:
//查看属性表
m_menuLayer.AddItem(new OpenAttribute(mapMain), -1, 2, false, esriCommandStyles.esriCommandStyleIconAndText);
如此这般,这般如此,我们期待的属性表就出现了,效果呢比较丑陋,莫怪莫怪……
属性表打开之后呢,大家就看到了有关属性表操作的一些功能了,不过呢,属性表的大开的工作还尚未完成。接下来呢,添加如下引用:
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Geodatabase;
完了之后,定义一下变量:
AxMapControl _MapControl;
IMapControl3 m_mapControl;
public DataTable dt2;
ITableSort pTs;//处理排序
bool up = true;
int row_index = 0;
int col_index = 0;
public string strAddField = "";
RowAndCol[] pRowAndCol = new RowAndCol[10000];
int count = 0;
这个窗口的参数为:
ublic formTable(AxMapControl pMapControl,IMapControl3 pMapCtrl)
{
InitializeComponent();
_MapControl = pMapControl;
m_mapControl = pMapCtrl;
}
这样,下面就可以显示属性了,在form_load事件中写如下代码:
private void formTable_Load(object sender, EventArgs e)
{
TableShow();
}
此处,调用了TableShow方法,TableShow的代码如下:
public void TableShow()
{
ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFLayer.FeatureClass;
if (pFeatureClass == null) return;
DataTable dt = new DataTable();
DataColumn dc = null;
for (int i = 0; i < pFeatureClass.Fields.FieldCount; i++)
{
dc = new DataColumn(pFeatureClass.Fields.get_Field(i).Name);
dt.Columns.Add(dc);
}
IFeatureCursor pFeatureCuror = pFeatureClass.Search(null, false);
IFeature pFeature = pFeatureCuror.NextFeature();
DataRow dr = null;
while (pFeature != null)
{
dr = dt.NewRow();
for (int j = 0; j < pFeatureClass.Fields.FieldCount; j++)
{
if (pFeatureClass.FindField(pFeatureClass.ShapeFieldName) == j)
{
dr[j] = pFeatureClass.ShapeType.ToString();
}
else
{
dr[j] = pFeature.get_Value(j).ToString();
}
}
dt.Rows.Add(dr);
pFeature = pFeatureCuror.NextFeature();
}
gdvAttribute.DataSource = dt;
dt2 = dt;
}
这样呢,属性表的显示就完成了。
2、新增字段
先看看那个“新增字段”按钮的事件吧……
ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
formAddField formaddfield = new formAddField(pFLayer, gdvAttribute);
formaddfield.Show();
此处,调用了窗体formAddField ,传递的参数是IFeatureLayer pFLayer 和DataGridView gdvAttribute,那么,下面看看formAddField的设计以及实现
界面呢也是比较简单,看看formAddField 的代码:
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 ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Controls;
namespace MapDemo
{
public partial class formAddField : Form
{
private IFeatureLayer _FeatureLayer = null;
private DataGridView _dgv;
public formAddField(IFeatureLayer pFeatureLayer, DataGridView dgv)
{
InitializeComponent();
_FeatureLayer = pFeatureLayer;
_dgv = dgv;
}
private void formAddField_Load(object sender, EventArgs e)
{
this.cmbFieldType.Items.Add("长整型");
this.cmbFieldType.Items.Add("短整型");
this.cmbFieldType.Items.Add("浮点型");
this.cmbFieldType.Items.Add("双精度");
this.cmbFieldType.Items.Add("文本型");
this.cmbFieldType.Items.Add("日期型");
this.cmbFieldType.SelectedIndex = 0;
}
/// <summary>
/// 改变事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cmbFieldType_SelectedIndexChanged(object sender, EventArgs e)
{
string strFieldType = cmbFieldType.Text;
switch (strFieldType)
{
case "长整型":
{
panelPrecision.Visible = true;
panelScale.Visible = false;
break;
}
case "短整型":
{
panelPrecision.Visible = true;
panelScale.Visible = false;
break;
}
case "浮点型":
{
panelPrecision.Visible = true;
panelScale.Visible = true;
break;
}
case "双精度":
{
panelPrecision.Visible = true;
panelScale.Visible = true;
break;
}
case "文本型":
{
panelPrecision.Visible = true;
panelScale.Visible = false;
lblPrecision.Text = "长度";
break;
}
default://日期型0
{
panelPrecision.Visible = false;
panelScale.Visible = false;
break;
}
}
}
private void btnOK_Click(object sender, EventArgs e)
{
string strFieldName = txtFieldName.Text;
string strFieldType = cmbFieldType.Text;
try
{
IFeatureLayer editAttributeLayer = _FeatureLayer;
//Field collection
IFieldsEdit pFieldsEdit;
//获取FeatureLayer
IFeatureLayer pFeatureLayer = editAttributeLayer;
//从FeatureLayer获取工作空间
IDataset pDataSet = pFeatureLayer.FeatureClass as IDataset;
IWorkspace pWorkSpace = pDataSet.Workspace;
//设置字段属性
IField pNewField = new FieldClass();
IFieldEdit pFieldEdit = pNewField as IFieldEdit;
pFieldEdit.AliasName_2 = strFieldName;
pFieldEdit.Name_2 = strFieldName;
switch (strFieldType)
{
case "长整型":
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeInteger;
pFieldEdit.Precision_2 = int.Parse(txtPrecision.Text);
break;
}
case "Class1.cs短整型":
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeSmallInteger;
pFieldEdit.Precision_2 = int.Parse(txtPrecision.Text);
break;
}
case "浮点型":
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeSingle;
pFieldEdit.Precision_2 = int.Parse(txtPrecision.Text);
pFieldEdit.Scale_2 = int.Parse(txtScale.Text);
break;
}
case "双精度":
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
pFieldEdit.Precision_2 = int.Parse(txtPrecision.Text);
pFieldEdit.Scale_2 = int.Parse(txtScale.Text);
break;
}
case "文本型":
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;
pFieldEdit.Length_2 = int.Parse(txtPrecision.Text);
break;
}
default://日期型0
{
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDate;
break;
}
}
//添加字段
try
{
int theField = pFeatureLayer.FeatureClass.Fields.FindField(strFieldName);
if (theField == -1)
{
pFeatureLayer.FeatureClass.AddField(pFieldEdit);
MessageBox.Show("字段添加成功!");
}
else
{
MessageBox.Show("字段已经存在!");
}
}
catch (Exception ex)
{
MessageBox.Show("Field " + pFieldEdit.Name + " was not added due to an error (" + ex.Message + " )");
}
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
this.Close();
RefreshTable refresh = new RefreshTable();
refresh.Refresh(_dgv, _FeatureLayer);
}
private void btnCancle_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
首先,在窗体加载的时候将数据类型添加进去,之后在类型选择改变时触发其属性控制控件的显示或者改变,接下来就是最重要的添加字段了,大家注意到了,在this.Close()之后,还调用了RefreshTable 的Refresh方法,传递的参数是datagridview _dgv和Ifeaturelayer _FeatureLayer,Refresh方法主要是实现添加自断后显示的刷新,由于后面还有涉及到,所以,这个后面一并说。
3、编辑属性并保存
还是先看看那两个按钮的时间吧:
/// <summary>
/// 编辑属性,并定位到最后一行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolEditor_Click(object sender, EventArgs e)
{
gdvAttribute.ReadOnly = false;
this.gdvAttribute.CurrentCell = this.gdvAttribute.Rows[this.gdvAttribute.Rows.Count - 2].Cells[0];
}
/// <summary>
/// 保存编辑
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolSave_Click(object sender, EventArgs e)
{
gdvAttribute.ReadOnly = true;
ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFLayer.FeatureClass;
ITable pTable;
//pTable = pFeatureClass.CreateFeature().Table;//很重要的一种获取shp表格的一种方式
pTable = pFLayer as ITable;
//将改变的记录值传给shp中的表
int i = 0;
while (pRowAndCol[i].Column != 0 || pRowAndCol[i].Row != 0)
{
IRow pRow;
pRow = pTable.GetRow(pRowAndCol[i].Row);
pRow.set_Value(pRowAndCol[i].Column, pRowAndCol[i].Value);
pRow.Store();
i++;
}
count = 0;
for (int j = 0; j < i; j++)
{
pRowAndCol[j].Row = 0;
pRowAndCol[j].Column = 0;
pRowAndCol[j].Value = null;
}
MessageBox.Show("保存成功!", "提示", MessageBoxButtons.OK);
}
在保存属性表的时候,出现了pRowAndCol,对他的定义如下:
public struct RowAndCol
{
//字段
private int row;
private int column;
private string _value;
//行属性
public int Row
{
get
{
return row;
}
set
{
row = value;
}
}
//列属性
public int Column
{
get
{
return column;
}
set
{
column = value;
}
}
//值属性
public string Value
{
get
{
return _value;
}
set
{
_value = value;
}
}
}
4、删除选择
顾名思义,就是删除选择的行,这里的选择可以是多选,也可是单选,看看对应按钮的事件吧:
/// <summary>
/// 删除行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolDelSelect_Click(object sender, EventArgs e)
{
if (((MessageBox.Show("确定要删除吗", "警告", MessageBoxButtons.YesNo)) == DialogResult.Yes))
{
ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
ITable pTable = pFLayer as ITable;
IRow pRow = pTable.GetRow(row_index);
pRow.Delete();
TableShow();
MessageBox.Show("删除成功!", "提示", MessageBoxButtons.OK);
_MapControl.ActiveView.Refresh();
}
}
此处,看看下面这个事件:
private void gdvAttribute_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
//记录值一旦改变触发此事件
//在dataGridView中获取改变记录的行数,列数和记录值
pRowAndCol[count].Row = gdvAttribute.CurrentCell.RowIndex;
pRowAndCol[count].Column = gdvAttribute.CurrentCell.ColumnIndex;
pRowAndCol[count].Value = gdvAttribute.Rows[gdvAttribute.CurrentCell.RowIndex].Cells[gdvAttribute.CurrentCell.ColumnIndex].Value.ToString();
count++;
}
5、导出Excel
首先得添加程序对Microsoft.Office.Interop.Excel的引用,添加完成之后方可导出:
/// <summary>
/// 导出Excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolExpXLS_Click(object sender, EventArgs e)
{
ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFLayer.FeatureClass;
IFields pFields = pFeatureClass.Fields;
ExportExcel(gdvAttribute, pFields);
}
private void ExportExcel(DataGridView myDGV, IFields pFields)
{
string saveFileName = "";
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.DefaultExt = "xls";
saveDialog.Filter = "Excel文件|*.xls";
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if (saveFileName.IndexOf(":") < 0) return; //被点了取消
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
if (xlApp == null)
{
MessageBox.Show("无法创建Excel对象,可能您的机子未安装Excel");
return;
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
//写入标题
for (int i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Columns.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
}
//写入数值
for (int r = 0; r < myDGV.Rows.Count; r++)
{
for (int i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
if (saveFileName != "")
{
try
{
workbook.Saved = true;
workbook.SaveCopyAs(saveFileName);
}
catch (Exception ex)
{
MessageBox.Show("导出文件时出错,文件可能正被打开!\n" + ex.Message);
}
xlApp.Quit();
GC.Collect();//强行销毁
MessageBox.Show("资料保存成功", "提示", MessageBoxButtons.OK);
}
}