www.pudn.com > C sharp和MapObjects实现.rar > frmStation.cs
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
namespace MainSystem
{
///
/// Summary description for frmStation.
///
public class frmStation : System.Windows.Forms.Form
{
private frmMain _frmMain;
private string _szStaName;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label _label2;
private System.Windows.Forms.Label _label_Statation;
private System.Windows.Forms.ListBox _listBox;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public frmStation(frmMain frmMain, string szStaName)
{
_frmMain = frmMain;
_szStaName = szStaName;
InitializeComponent();
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this._label2 = new System.Windows.Forms.Label();
this._label_Statation = new System.Windows.Forms.Label();
this._listBox = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// button1
//
this.button1.Enabled = false;
this.button1.Location = new System.Drawing.Point(152, 8);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(56, 24);
this.button1.TabIndex = 7;
this.button1.Text = "定位";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// _label2
//
this._label2.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this._label2.Font = new System.Drawing.Font("SimSun", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this._label2.Location = new System.Drawing.Point(8, 32);
this._label2.Name = "_label2";
this._label2.Size = new System.Drawing.Size(200, 24);
this._label2.TabIndex = 6;
//
// _label_Statation
//
this._label_Statation.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this._label_Statation.Font = new System.Drawing.Font("SimSun", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this._label_Statation.Location = new System.Drawing.Point(8, 8);
this._label_Statation.Name = "_label_Statation";
this._label_Statation.Size = new System.Drawing.Size(200, 24);
this._label_Statation.TabIndex = 5;
//
// _listBox
//
this._listBox.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this._listBox.ItemHeight = 12;
this._listBox.Location = new System.Drawing.Point(8, 56);
this._listBox.Name = "_listBox";
this._listBox.Size = new System.Drawing.Size(200, 220);
this._listBox.TabIndex = 4;
this._listBox.DoubleClick += new System.EventHandler(this._listBox_DoubleClick);
this._listBox.SelectedIndexChanged += new System.EventHandler(this._listBox_SelectedIndexChanged);
//
// frmStation
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(224, 277);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this._label2,
this._label_Statation,
this._listBox});
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.SizableToolWindow;
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "frmStation";
this.Text = "车站信息";
this.TopMost = true;
this.Load += new System.EventHandler(this.frmStation_Load);
this.ResumeLayout(false);
}
#endregion
//功能：单击按钮，定位指定的公交路线
private void button1_Click(object sender, System.EventArgs e)
{
string szName = _listBox.Text; //公交路线名称
string szLayer = CEnvironment.BUSLINE_LAYERNAME;//公交路线所在图层名称
MapObjects2.MapLayer ly = (MapObjects2.MapLayer)_frmMain._map.Layers.Item((object)szLayer);
if (ly == null)
return;
MapObjects2.Recordset rs = ly.SearchExpression("名称 like '"+szName +"'");;
if (null == rs)
{
MessageBox.Show("地图上没有这条公交线路！","北京市地理信息公众查询系统",MessageBoxButtons.OK,MessageBoxIcon.Error);
return;
}
rs.MoveFirst();
if (rs.EOF)
{
MessageBox.Show("地图上没有这条公交线路！","北京市地理信息公众查询系统",MessageBoxButtons.OK,MessageBoxIcon.Error);
return;
}
//在地图找到了这条线路，画出来
//首先定位
MapObjects2.Point pt;
MapObjects2.Line line = (MapObjects2.Line)rs.Fields.Item("shape").Value;
pt = line.Extent.Center;
if (!_frmMain.IsWithin(_frmMain._map.Extent, pt))
{
_frmMain._map.CenterAt(pt.X,pt.Y );
}
//其次设置_environment.m_drawLine和_environment.m_buses
MapObjects2.Points pts;
pts = (MapObjects2.Points)line.Parts.Item(0);
_frmMain._environment.m_drawLine = null;
_frmMain._environment.m_drawLine = new MLine[1];
_frmMain._environment.m_drawLine[0] = new MLine();
_frmMain._environment.m_drawLine[0].nPointNumber = pts.Count;
_frmMain._environment.m_drawLine[0].pPoint = new MPoint[pts.Count];
for (int i = 0; i < pts.Count; i ++)
{
pt = (MapObjects2.Point)pts.Item(i);
_frmMain._environment.m_drawLine[0].pPoint[i] = new MPoint();
_frmMain._environment.m_drawLine[0].pPoint[i].x = pt.X;
_frmMain._environment.m_drawLine[0].pPoint[i].y = pt.Y;
}
_frmMain._environment.m_buses = new Buses();
int nCount = 0;
if(!_frmMain._environment.GetStation(szName, _frmMain._environment.m_buses,ref nCount))
_frmMain._environment.m_buses = null;
else
_frmMain._environment.m_buses.nNum = nCount;
//闪烁，重画
_frmMain._map.FlashShape(rs.Fields.Item("shape").Value, 4);
_frmMain._map.Extent = _frmMain._map.Extent;
}
private void frmStation_Load(object sender, System.EventArgs e)
{
this._label_Statation.Text = " 车站名称:"+this._szStaName;
this._label2.Text = "经过"+this._szStaName+"的公交线路:";
LoadListBox();
}
private void LoadListBox()
{
_listBox.Items.Clear();
if ("" == _szStaName)
return ;
System.Data.DataTable typeTbl = this._frmMain._environment.m_dataSet.Tables["公交车站路线"];
string szFilter = "站名='"+_szStaName+"'";
if (_frmMain._environment.m_szBusFilter != "")
{
szFilter += " And ";
szFilter += _frmMain._environment.m_szBusFilter;
}
System.Data.DataRow[] rowstypes = typeTbl.Select(szFilter);
foreach (System.Data.DataRow myRow in rowstypes)
{
this._listBox.Items.Add(myRow["线路名"]);
}
}
private void _listBox_SelectedIndexChanged(object sender, System.EventArgs e)
{
if (_listBox.Text != "")
button1.Enabled = true;
else
button1.Enabled = false;
}
private void _listBox_DoubleClick(object sender, System.EventArgs e)
{
if (_listBox.Text == "")
return;
frmLine frm = new frmLine(this._frmMain,_listBox.Text );
this.Visible = false;
frm.ShowDialog(this._frmMain);
this.Close();
}
}
}