mapobject shape数据操作三
创建新的图层 先要设置图层的TableDesc 也就是属性字段 ，让后利用AddGeoDataset 方法就可以产生新的Geodataset(数据集)，如把他加载到新的DataConnection就产生一个新的shape图层文件
这写了简单的测试 例子 实际使用的时候 不能把字段写死
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MapObjects2;
using System.Windows.Forms;
using System.Collections;
namespace roadEditTool
{
/// <summary>
///
/// </summary>
class MODataOperate
{
public GeoDataset gobj_gds;
public string gs_shpName;
public TableDesc gobj_desc = new TableDesc();
public DataConnection gobj_dc = new DataConnection();
public MapLayer gobj_layer = new MapLayer();
//新建一个shp文件
public void createShpFile()
{
SaveFileDialog lobj_saveShp = new SaveFileDialog();
lobj_saveShp.Filter = "shape|*.shp";
lobj_saveShp.RestoreDirectory = true;
if (lobj_saveShp.ShowDialog() == DialogResult.OK)
{
// lobj_saveShp.OpenFile();
if (lobj_saveShp.FileName == null || lobj_saveShp.FileName.Trim() == "")
{
MessageBox.Show("文件名称不能为空");
return;
}
gs_shpName = lobj_saveShp.FileName.Substring(0, lobj_saveShp.FileName.Length - 4);
gobj_dc.Database = gs_shpName.Substring(0, gs_shpName.LastIndexOf("\\"));
gs_shpName = gs_shpName.Substring(gs_shpName.LastIndexOf("\\") + 1, gs_shpName.Length - gs_shpName.LastIndexOf("\\") - 1);
createFileds();
addDataset();
mapLayer();
gobj_dc.Disconnect();
gobj_layer = null;
gobj_desc = null;
gobj_gds = null;
gobj_dc = null;
}
}
//打开shp数据
public void openShpFile()
{
string ls_FileName = null;
string ls_path = null;
OpenFileDialog lobj_saveShp = new OpenFileDialog();
lobj_saveShp.Filter = "shape|*.shp";
lobj_saveShp.RestoreDirectory = true;
if (lobj_saveShp.ShowDialog() == DialogResult.OK)
{
ls_FileName = lobj_saveShp.SafeFileName.Split('.')[0].ToString().Trim();
System.IO.FileInfo file = new System.IO.FileInfo(lobj_saveShp.FileName);
ls_path = file.DirectoryName;
// lobj_saveShp.OpenFile();
if (lobj_saveShp.FileName == null || lobj_saveShp.FileName.Trim() == "")
{
MessageBox.Show("文件名称不能为空");
return;
}
//gs_shpName = lobj_saveShp.FileName.Substring(0, lobj_saveShp.FileName.Length - 4);
//gobj_dc.Database = gs_shpName.Substring(0, gs_shpName.LastIndexOf("\\"));
// gs_shpName = gs_shpName.Substring(gs_shpName.LastIndexOf("\\") + 1, gs_shpName.Length - gs_shpName.LastIndexOf("\\") - 1);
gobj_layer= AddShape(ls_path, ls_FileName, true);
}
}
//三维显示
public void openLayer()
{
/*Recordset rs = gobj_layer.GeoDataset;
do
{
}while();*/
}
//添加一个图层
public void mapLayer()
{
gobj_layer.GeoDataset = gobj_gds;
}
public MapObjects2.MapLayer AddShape(string basepath, string fileName, bool mHasMeasure)
{
try
{
mHasMeasure = false;
gobj_dc.Database = basepath;
if (gobj_dc.Connect())
{
gobj_gds = gobj_dc.FindGeoDataset(fileName);
if (gobj_gds == null)
{
MessageBox.Show("打开shape文件异常");
return null;
}
else
{
MapLayer newLayer = new MapLayer();
newLayer.GeoDataset = gobj_gds;
mHasMeasure = gobj_gds.HasMeasure;
gobj_dc = null;
gobj_gds = null;
return newLayer;
}
}
else
{
gobj_dc = null;
gobj_gds = null;
return null;
}
}
catch (Exception EX)
{
log.log.appLog.Error("Error:加载shp数据异常", EX);
return null;
}
}
//新建字段
public void createFileds()
{
gobj_desc.FieldCount = 10;
//字段名称
gobj_desc.set_FieldName(0, "路线名称");
gobj_desc.set_FieldName(1, "路线代码");
gobj_desc.set_FieldName(2, "起点桩号");
gobj_desc.set_FieldName(3, "止点桩号");
gobj_desc.set_FieldName(4, "L");
gobj_desc.set_FieldName(5, "ROADNAME");
gobj_desc.set_FieldName(6, "ROADCODE");
gobj_desc.set_FieldName(7, "FMEAS");
gobj_desc.set_FieldName(8, "TMEAS");
gobj_desc.set_FieldName(9, "GUID");
//字段类型
gobj_desc.set_FieldType(0, FieldTypeConstants.moString);
gobj_desc.set_FieldType(1, FieldTypeConstants.moString);
gobj_desc.set_FieldType(2, FieldTypeConstants.moDouble);
gobj_desc.set_FieldType(3, FieldTypeConstants.moDouble);
gobj_desc.set_FieldType(4, FieldTypeConstants.moDouble);
gobj_desc.set_FieldType(5, FieldTypeConstants.moString);
gobj_desc.set_FieldType(6, FieldTypeConstants.moString);
gobj_desc.set_FieldType(7, FieldTypeConstants.moDouble);
gobj_desc.set_FieldType(8, FieldTypeConstants.moDouble);
gobj_desc.set_FieldType(9, FieldTypeConstants.moString);
//字段长度
gobj_desc.set_FieldLength(0, 50);
gobj_desc.set_FieldLength(1, 50);
gobj_desc.set_FieldPrecision(2, 15);
gobj_desc.set_FieldScale(2, 3);
gobj_desc.set_FieldPrecision(3, 15);
gobj_desc.set_FieldScale(3, 3);
gobj_desc.set_FieldPrecision(4, 16);
gobj_desc.set_FieldScale(4, 11);
gobj_desc.set_FieldLength(5, 50);
gobj_desc.set_FieldLength(6, 50);
gobj_desc.set_FieldPrecision(7, 15);
gobj_desc.set_FieldScale(7, 3);
gobj_desc.set_FieldPrecision(8, 15);
gobj_desc.set_FieldScale(8, 3);
gobj_desc.set_FieldLength(9, 50);
}
//添加记录集
public void addDataset()
{
gobj_gds = gobj_dc.AddGeoDataset(gs_shpName, ShapeTypeConstants.moShapeTypeLine, gobj_desc, true, true);
}
//添加矢量线及属性值
public void addLine(Line _line, Hashtable _table)
{
Recordset rs = gobj_layer.Records;
rs.AddNew();
rs.Fields.Item("shape").Value = _line;
// rs.Fields.Item("路线名称").Value = _table["路线名称"].ToString().Trim();
setStringValue(rs, "路线名称", _table);
setStringValue(rs, "路线代码", _table);
seDoubleValue(rs, "起点桩号", _table);
seDoubleValue(rs, "止点桩号", _table);
rs.Fields.Item("L").Value = _line.Length;
setStringValue(rs, "ROADNAME", _table);
setStringValue(rs, "ROADCODE", _table);
seDoubleValue(rs, "FMEAS", _table);
seDoubleValue(rs, "TMEAS", _table);
rs.Fields.Item("GUID").Value = Guid.NewGuid().ToString();
rs.Update();
rs.StopEditing();
}
private void setStringValue(Recordset rs, string name, Hashtable _table)
{
string value = _table[name].ToString().Trim();
if (value == null || value == "") return;
rs.Fields.Item(name).Value = value;
}
private void seDoubleValue(Recordset rs, string name, Hashtable _table)
{
string value = _table[name].ToString().Trim();
if (value == null || value == "") return;
rs.Fields.Item(name).Value =Convert.ToDouble(value);
}
}
}