Load a Layer using asp map and Drawing line,polygon,circle,rectangular,polyline,point, shapes

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using AspMap;
using AspMap.Web;

public partial class MapToolsApp : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e)
{
map.MapUnit = MeasureUnit.Degree;
map.ScaleBar.Visible = true;
map.ScaleBar.BarUnit = UnitSystem.Imperial;

AddMapLayers();
}

protected void zoomFull_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
map.ZoomFull();
}

protected void map_InfoTool(object sender, AspMap.Web.InfoToolEventArgs e)
{
map.Callouts.Clear();

AspMap.Recordset records = map.Identify(e.InfoPoint, 5);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();

Callout callout = map.Callouts.Add();
callout.X = e.InfoPoint.X;
callout.Y = e.InfoPoint.Y;
callout.Text = GetCalloutText(records);
callout.Font.Size = 16;
}
}

protected String GetCalloutText(AspMap.Recordset rs)
{
int index = rs.Fields.GetFieldIndex("NAME");
if (index < 0) index = rs.Fields.GetFieldIndex(rs.Layer.LabelField);
if (index < 0) index = 0;
return rs[index].ToString();
}

protected void map_InfoWindowTool(object sender, InfoWindowToolEventArgs e)
{
AspMap.Recordset records = map.Identify(e.InfoPoint, 5);

e.InfoWindow.Width = 300;
e.InfoWindow.HorizontalAlign = HorizontalAlign.Center;
e.InfoWindow.Font.Bold = true;
e.InfoWindow.ScrollBars = System.Web.UI.WebControls.ScrollBars.Auto;

// set the content of the info window
e.InfoWindow.Content = GetCalloutText(records);

// add a DataGrid control to the info window to render the records
if (!records.EOF)
{
DataGrid grid = new DataGrid();
grid.DataSource = records;
grid.DataBind();

e.InfoWindow.Controls.Add(grid);
}
}

protected void map_PointTool(object sender, AspMap.Web.PointToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Point);
mapShape.Symbol.Size = 6;
mapShape.Symbol.FillColor = Color.Red;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null && activeLayer.LayerType == LayerType.Polygon)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Point, SearchMethod.PointInPolygon);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void map_LineTool(object sender, AspMap.Web.LineToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Line);
mapShape.Symbol.Size = 2;
mapShape.Symbol.LineColor = Color.Red;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Line, SearchMethod.Intersect);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void map_PolylineTool(object sender, AspMap.Web.PolylineToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Polyline);
mapShape.Symbol.Size = 2;
mapShape.Symbol.LineColor = Color.Red;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Polyline, SearchMethod.Intersect);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void map_RectangleTool(object sender, AspMap.Web.RectangleToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Rectangle);
mapShape.Symbol.Size = 2;
mapShape.Symbol.LineColor = Color.Red;
mapShape.Symbol.FillStyle = FillStyle.Invisible;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Rectangle, SearchMethod.Inside);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void map_CircleTool(object sender, AspMap.Web.CircleToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Circle);
mapShape.Symbol.Size = 2;
mapShape.Symbol.LineColor = Color.Red;
mapShape.Symbol.FillStyle = FillStyle.Invisible;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Circle, SearchMethod.Inside);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void map_PolygonTool(object sender, AspMap.Web.PolygonToolEventArgs e)
{
map.MapShapes.Clear();

MapShape mapShape = map.MapShapes.Add(e.Polygon);
mapShape.Symbol.Size = 2;
mapShape.Symbol.LineColor = Color.Red;
mapShape.Symbol.FillStyle = FillStyle.Invisible;

AspMap.Layer activeLayer = map.FindLayer(layerList.SelectedValue);

if (activeLayer != null)
{
AspMap.Recordset records = activeLayer.SearchShape(e.Polygon, SearchMethod.Inside);

if (!records.EOF)
{
dataGrid.DataSource = records;
dataGrid.DataBind();
dataGrid.Caption = records.Layer.Name.ToUpper();
}
}
}

protected void Page_PreRender(object sender, System.EventArgs e)
{
UpdateLayerList();
}

void UpdateLayerList()
{
string activeLayer;

if (layerList.Items.Count == 0)
activeLayer = map[0].Name;
else
activeLayer = layerList.SelectedValue;

layerList.Items.Clear();

for (int i = 0; i < map.LayerCount; i++)
{
if (map.IsLayerVisible(i))
layerList.Items.Add(map[i].Name);
}

if (layerList.Items.FindByText(activeLayer) != null)
layerList.SelectedValue = activeLayer;
else
layerList.SelectedIndex = 0;
}

protected void AddMapLayers()
{
AspMap.Feature feature;
AspMap.FeatureRenderer renderer;
AspMap.Layer layer;

string LayerFolder = MapPath("MAPS/STREETS/");

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "County.shp");
layer.LabelField = "NAME";
layer.Symbol.Size = 2;
layer.Symbol.LineColor = Color.FromArgb(199, 172, 116);
layer.Symbol.FillColor = Color.FromArgb(242, 236, 223);

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Park.shp");
layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Outline = true;
layer.LabelFont.Size = 11;
layer.LabelFont.Bold = true;
layer.Symbol.FillColor = Color.FromArgb(143, 175, 47);
layer.Symbol.LineColor = layer.Symbol.FillColor;

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "WaterArea.shp");
layer.MaxScale = 300000;
layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Outline = true;
layer.LabelFont.Size = 12;
layer.Symbol.FillColor = Color.FromArgb(159, 159, 223);
layer.Symbol.LineColor = layer.Symbol.FillColor;

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Water.shp");
layer.MaxScale = 300000;
layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Size = 9;
layer.Symbol.FillColor = Color.FromArgb(159, 159, 223);
layer.Symbol.LineColor = layer.Symbol.FillColor;
layer.LabelFont.Color = Color.FromArgb(0, 0, 128);

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Airport.shp");
layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Outline = true;
layer.LabelFont.Size = 11;
layer.Symbol.FillColor = Color.FromArgb(43, 147, 43);

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Street.shp");
layer.MaxScale = 150000;
layer.LabelField = "NAME";
layer.LabelFont.Size = 10;
layer.LabelMaxScale = 37000;
layer.ShowLabels = true;

// set different street line width on different scales
feature = new AspMap.Feature();
feature.MaxScale = 75000;
feature.MinScale = 37000;
feature.Symbol.LineStyle = LineStyle.Road;
feature.Symbol.LineColor = Color.FromArgb(171, 158, 137);
feature.Symbol.InnerColor = Color.White;
feature.Symbol.Size = 3;
layer.Renderer.Add(feature);

feature = feature.Clone();
feature.MaxScale = 37000;
feature.MinScale = 16000;
feature.Symbol.Size = 4;
feature.LabelFont.Outline = true;
layer.Renderer.Add(feature);

feature = feature.Clone();
feature.MaxScale = 16000;
feature.MinScale = -1; // no minimum scale
feature.Symbol.Size = 6;
layer.Renderer.Add(feature);

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Railroad.shp");
layer.MaxScale = 200000;
layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Outline = true;
layer.LabelFont.Size = 10;
layer.Symbol.LineStyle = LineStyle.Railroad;

//----------------------------------------------------
layer = map.AddLayer(LayerFolder + "Institution.shp");

layer.LabelField = "NAME";
layer.ShowLabels = true;
layer.LabelFont.Name = "Times New Roman";
layer.LabelFont.Outline = true;
layer.LabelFont.Size = 12;
layer.UseDefaultSymbol = false;

renderer = layer.Renderer;
renderer.Field = "FCC";

// cemetery symbol
feature = renderer.Add();
feature.Value = "D82";
feature.Symbol.PointStyle = PointStyle.Bitmap;
feature.Symbol.Bitmap = MapPath("symbols/cemetery.bmp");
feature.Symbol.Size = 16;
feature.Symbol.TransparentColor = Color.White;
feature.Description = "Cemetery";

// school symbol
feature = renderer.Add();
feature.Value = "D43";
feature.Symbol.PointStyle = PointStyle.Bitmap;
feature.Symbol.Bitmap = MapPath("symbols/school.bmp");
feature.Symbol.Size = 16;
feature.Symbol.TransparentColor = Color.White;
feature.Description = "School";

// church symbol
feature = renderer.Add();
feature.Value = "D44";
feature.Symbol.PointStyle = PointStyle.Bitmap;
feature.Symbol.Bitmap = MapPath("symbols/church.bmp");
feature.Symbol.Size = 16;
feature.Symbol.TransparentColor = Color.White;
feature.Description = "Church";

// hospital symbol
feature = renderer.Add();
feature.Value = "D31";
feature.Symbol.PointStyle = PointStyle.Bitmap;
feature.Symbol.Bitmap = MapPath("symbols/hospital.bmp");
feature.Symbol.Size = 16;
feature.Symbol.TransparentColor = Color.White;
feature.Description = "Hospital";
}
}

Rubber Band Effect in GIS

You might have observed a Zoom-in Control if you are familiar with GIS Maps.While you are performing such operation,a box is drawn along with the mouse rectangularly.This effect is called Rubber Band Effect.Now I am here to get this functionality using javascript on an image.
Follow the steps as below:
I am using 'underscore'( _ ) in the tags to avoid blogspot from preventing the tags,as you may know the difficulty.
1.Place an asp image control on the form.
<_asp:image id="imgMap" runat="server" height="24px" width="38px" onmousedown="mouseDown(event)" onmouseup="mouseUp(event)">
<_/asp:imagebutton>

2.Place a div tag
<_div id="rubberBand"><_/div>

3.Now add the javascript functions as below:
function mouseDown(event)
{
startRubber(event);
}

function mouseUp(event)
{
var r = document.getElementById('rubberBand');
r.style.visibility = 'hidden';
stopRubber();
}

function startRubber (event)
{
var x = event.offsetX?(event.offsetX):event.pageX-document.getElementById("imgMap").offsetLeft;
var y = event.offsetY?(event.offsetY):event.pageY-document.getElementById("imgMap").offsetTop;

var r = document.getElementById('rubberBand');
r.style.width = 0;
r.style.height = 0;
startx = event.x + document.body.scrollLeft + document.documentElement.scrollLeft;
starty = event.y + document.body.scrollTop + document.documentElement.scrollTop;
r.style.pixelLeft = startx;
r.style.pixelTop = starty;
r.style.visibility = 'visible';
}

document.onmousemove = moveRubber;
}

function moveRubber ()
{
var r = document.getElementById('rubberBand');

latestx=event.x + document.body.scrollLeft + document.documentElement.scrollLeft;
latesty=event.y + document.body.scrollTop + document.documentElement.scrollTop;
if((latestx < pixelright =" startx;" pixelbottom =" starty;" width =" r.style.pixelRight" height =" r.style.pixelBottom"> starty))
{
r.style.pixelRight = startx;
r.style.pixelBottom = starty;
r.style.width = r.style.pixelRight - latestx;
r.style.height = latesty - r.style.pixelBottom;
}
else if((latestx > startx) && (latesty < starty))
{
r.style.pixelLeft = startx;
r.style.pixelBottom = starty;
r.style.width = latestx - r.style.pixelLeft;
r.style.height = r.style.pixelBottom - latesty;
}
else
{
r.style.pixelLeft = startx;
r.style.pixelTop = starty;
r.style.width = latestx - r.style.pixelLeft;
r.style.height = latesty - r.style.pixelTop;
}
}

function stopRubber (event)
{
if (event.offsetX) {
var x=event.offsetX;
var y=event.offsetY;
}
else {
var x=event.pageX-document.getElementById('imgMap').offsetLeft;
var y=event.pageY-document.getElementById('imgMap').offsetTop;
}
document.onmousemove = null;
}

4.Apply a style to rubberband division as below:
#rubberBand
{
position: absolute;
visibility: hidden;
width: 0px; height: 0px;
border: 1px dotted red;
}

Now everthing is ready.Go and get your work done ;)
If any thing has gone wrong,don't get frustated contact me immediately at work hours

Changing Label Text using Java Script

document.getElementById('<%= Label1.ClientID %>').innerHTML='changed value here';

Add a layer in to asp map

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using AspMap;
using AspMap.Web;

public partial class WorldMapApp : System.Web.UI.Page
{

protected void Page_Load(object sender, System.EventArgs e)
{
AddMapLayers();
}

protected void AddMapLayers()
{
string LayerFolder = MapPath("MAPS/WORLD/");

map.AddLayer(LayerFolder + "earth.ecw");
map.AddLayer(LayerFolder + "world.shp");
map.AddLayer(LayerFolder + "lakes.shp");
map.AddLayer(LayerFolder + "capitals.shp");

AspMap.Layer layer;

// world
layer = map["world"];
layer.ShowLabels = true;
layer.LabelField = "CODE";
layer.LabelFont.Name = "Verdana";
layer.LabelFont.Size = 12;
layer.LabelStyle = LabelStyle.PolygonCenter;
layer.Opacity = 0.6;

// lakes
layer = map["lakes"];
layer.ShowLabels = true;
layer.LabelField = "NAME";
layer.LabelFont.Size = 10;
layer.LabelFont.Outline = true;
layer.Symbol.FillColor = Color.Blue;
layer.Symbol.LineColor = layer.Symbol.FillColor;
layer.LabelStyle = LabelStyle.PolygonCenter;

// capitals
layer = map["capitals"];
layer.ShowLabels = true;
layer.LabelField = "NAME";
layer.LabelFont.Bold = true;
layer.LabelFont.Size = 11;
layer.LabelFont.Outline = true;
layer.Symbol.PointStyle = PointStyle.CircleWithLargeCenter;
layer.Symbol.Size = 8;
layer.Symbol.FillColor = Color.White;
}


protected void map_InfoTool(object sender, AspMap.Web.InfoToolEventArgs e)
{
map.Callouts.Clear();

AspMap.Recordset records = map.Identify(e.InfoPoint, 5);

if (!records.EOF)
{
identifyGrid.DataSource = records;
identifyGrid.DataBind();
identifyGrid.Caption = records.Layer.Name.ToUpper();

Callout callout = map.Callouts.Add();
callout.X = e.InfoPoint.X;
callout.Y = e.InfoPoint.Y;
callout.Text = GetCalloutText(records);
callout.Font.Size = 16;
}
}

protected String GetCalloutText(AspMap.Recordset rs)
{
int index = rs.Fields.GetFieldIndex("NAME");
if (index < 0) index = rs.Fields.GetFieldIndex(rs.Layer.LabelField);
if (index < 0) index = 0;
return rs[index].ToString();
}

}

Enumerating Http Modules

One common ASP.NET performance tip is to remove any HttpModules that your application does not use. You can take a peek at which modules are loaded by the framework on your behalf by examining the framework's Web.config file, but how do you find out which modules are actually loaded in the current context?

Fortunately, the HttpApplication instance provides a Modules collection that you can loop through:

// Get a collection of modules loaded for the current context.

HttpModuleCollection modules = HttpContext.Current.ApplicationInstance.Modules;

// Enumerate the loaded HttpModules and do something with them. For example, you can

// create a table, listing each module by key and full type name.

// NOTE: the key is the same key specified in Web.config to add the module.

foreach (string moduleKey in modules.Keys)

{

IHttpModule module = modules[moduleKey];

// Do something with the module key and/or the HttpModule.

}

You can then use the Modules collection create a table like this:

And boom, there you have it: a list of HttpModules that are loaded for the current context. You can use this information to determine which HttpModules are needed by your application, and which ones you can safely remove.