Application of MapObjects2.2 in C # (dynamic loading map)

object| Dynamic | Load MapObjects2.2 application in C # (dynamic load map)



Keywords: mapobjects 2.2 C #



This article realizes the dynamic loading map function, the nonsense is little said, the function realization sees the code.





Load Process Code:



Using System;

Using System.Drawing;

Using System.Collections;

Using System.ComponentModel;

Using System.Windows.Forms;

Using System.Data;



Namespace Loadmap

{

<summary>

Summary description of the Form1.

</summary>

public class Form1:System.Windows.Forms.Form

{

Private Axmapobjects2.axmap AxMap1;

<summary>

The required designer variable.

</summary>

Private System.ComponentModel.Container components = null;



Public Form1 ()

{

//

Required for Windows Forms Designer support

//

InitializeComponent ();



//

TODO: Add any constructor code after the InitializeComponent call

//

}



<summary>

Clean up all resources that are in use.

</summary>

protected override void Dispose (bool disposing)

{

if (disposing)

{

if (Components!= null)

{

Components. Dispose ();

}

}

Base. Dispose (disposing);

}



Code generated #region the Windows forms Designer

<summary>

Designer supports required methods-do not use the Code editor to modify

The contents of this method.

</summary>

private void InitializeComponent ()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager (typeof (Form1));

This.axmap1 = new Axmapobjects2.axmap ();

((System.ComponentModel.ISupportInitialize) (THIS.AXMAP1)). BeginInit ();

This. SuspendLayout ();

//

AxMap1

//

This.axMap1.Dock = System.Windows.Forms.DockStyle.Fill;

This.axMap1.Location = new System.Drawing.Point (0, 0);

This.axMap1.Name = "AxMap1";

This.axMap1.OcxState = ((System.Windows.Forms.AxHost.State) (resources. GetObject ("Axmap1.ocxstate"));

This.axMap1.Size = new System.Drawing.Size (600, 357);

This.axMap1.TabIndex = 0;

//

Form1

//

This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);

This. ClientSize = new System.Drawing.Size (600, 357);

This. Controls.Add (THIS.AXMAP1);

This. Name = "Form1";

This. Text = "Form1";

This. Load + = new System.EventHandler (this. Form1_Load);

((System.ComponentModel.ISupportInitialize) (THIS.AXMAP1)). EndInit ();

This. ResumeLayout (FALSE);



}

#endregion



<summary>

The main entry point for the application.

</summary>

[STAThread]

static void Main ()

{

Application.Run (New Form1 ());

}



private void Form1_Load (object sender, System.EventArgs e)

{

Defining Data connections

Mapobjects2.dataconnection dc = new Mapobjects2.dataconnectionclass ();

Defining layers

Mapobjects2.maplayer layer = new Mapobjects2.maplayerclass ();

My map file is in the "g:\\loadmap\\bin\\debug\\" directory, please replace it with your own map directory

dc. Database = "g:\\loadmap\\bin\\debug\\";

Exit if connection is unsuccessful

if (!DC. Connect ())

{

MessageBox.Show ("No layer data file found under specified folder");

Application.exit ();

}

else//connection is successful, load the map.

{

/*

* Map loading sequence is generally surface, line, point, first loaded at the bottom of the map

*/

Load layer states,

Layer. Geodataset = DC. Findgeodataset ("States");

AXMAP1.LAYERS.ADD (layer);

Load Layer rivers,

Layer. Geodataset = DC. Findgeodataset ("Rivers");

AXMAP1.LAYERS.ADD (layer);

Load other layers ...

}

Must be refreshed before it can be displayed

Axmap1.refresh ();

}

}

}