关键性代码整理

 

利用ＡＯ将平面坐标转换成大地坐标

     //利用ＡＯ将平面坐标转换成大地坐标
 ISpatialReferenceFactory2 pfactory = new SpatialReferenceEnvironmentClass();
 IProjectedCoordinateSystem flatref = pfactory.CreateProjectedCoordinateSystem(54013);
 IGeographicCoordinateSystem earthref = pfactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_NAD1983);
 IPoint pt = new PointClass();
 double x = Convert.ToDouble(txtX.Text);
 double y = Convert.ToDouble(txtY.Text);
 pt.PutCoords(x, y);
 IGeometry geo = (IGeometry)pt;
 geo.SpatialReference = flatref;
 geo.Project(earthref);

 plan.FlyTo(pt.X, pt.Y, 1000, 10000, 0, 0, "FlyToLocation");
 MessageBox.Show(pt.X + " " + pt.Y);

Skyline通过对象名称对对象进行定位

    //通过对象名称对对象进行定位
 int itemID = infoTree.FindItem("[Free Hand Drawings]\\Triplane");
 string objID = infoTree.GetTerraObjectID(itemID);
 plan.FlyToObject(objID, ActionCode.AC_FLYTO);

根据数据库中内容生成二级目录

    //根据数据库中内容生成二级目录
 OleDbConnection conn=new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\\Data.mdb");
 conn.Open();

 OleDbDataAdapter oda=new OleDbDataAdapter("select * from Type",conn);
 DataSet dsType=new DataSet();
 oda.Fill(dsType);
 DataView dvType=dsType.Tables[0].DefaultView;
 
 foreach(DataRowView drv in dvType)
 {
 TreeNode node=new TreeNode();
 node.Text=drv["Name"].ToString();

 int ID=(int)drv["ID"]; 
 oda.SelectCommand.CommandText="select * from Content where TypeID="+ID;
 DataSet dsContent=new DataSet();
 oda.Fill(dsContent);
 if (dsContent.Tables[0].Rows.Count > 0)
 {
 DataView dvContent = dsContent.Tables[0].DefaultView;
 foreach (DataRowView i_drv in dvContent)
 {
 TreeNode i_node = new TreeNode();
 
 i_node.Text = i_drv["Content"].ToString();
 node.Nodes.Add(i_node);
 }
 }
 trvContent.Nodes.Add(node);