Simple.aspx.cs
上传用户:sex100000
上传日期:2013-11-09
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文件大小:2k
- using System;
- using System.Data;
- using System.Drawing;
- using System.Configuration;
- using System.Collections;
- using System.Web;
- using System.Web.Security;
- using System.Web.UI;
- using System.Web.UI.WebControls;
- using System.Web.UI.WebControls.WebParts;
- using System.Web.UI.HtmlControls;
- public partial class Simple : System.Web.UI.Page
- {
- private SharpMap.Map myMap;
- protected void Page_Load(object sender, EventArgs e)
- {
- //Set up the map. We use the method in the App_Code folder for initializing the map
- myMap = MapHelper.InitializeMap(new System.Drawing.Size((int)imgMap.Width.Value,(int)imgMap.Height.Value));
- if (Page.IsPostBack)
- {
- //Page is post back. Restore center and zoom-values from viewstate
- myMap.Center = (SharpMap.Geometries.Point)ViewState["mapCenter"];
- myMap.Zoom = (double)ViewState["mapZoom"];
- }
- else
- {
- //This is the initial view of the map. Zoom to the extents of the map:
- //myMap.ZoomToExtents();
- //or center on 0,0 and zoom to full earth (360 degrees)
- //myMap.Center = new SharpMap.Geometries.Point(0,0);
- //myMap.Zoom = 360;
- //Create the map
- GenerateMap();
- }
- }
-
- protected void imgMap_Click(object sender, ImageClickEventArgs e)
- {
- //Set center of the map to where the client clicked
- myMap.Center = myMap.ImageToWorld(new System.Drawing.Point(e.X, e.Y));
- //Set zoom value if any of the zoom tools were selected
- if (rblMapTools.SelectedValue == "0") //Zoom in
- myMap.Zoom = myMap.Zoom * 0.5;
- else if (rblMapTools.SelectedValue == "1") //Zoom out
- myMap.Zoom = myMap.Zoom * 2;
- //Create the map
- GenerateMap();
- }
-
- /// <summary>
- /// Creates the map, inserts it into the cache and sets the ImageButton Url
- /// </summary>
- private void GenerateMap()
- {
- //Save the current mapcenter and zoom in the viewstate
- ViewState.Add("mapCenter", myMap.Center);
- ViewState.Add("mapZoom", myMap.Zoom);
- //Render map
- System.Drawing.Image img = myMap.GetMap();
- string imgID = SharpMap.Web.Caching.InsertIntoCache(1, img);
- imgMap.ImageUrl = "getmap.aspx?ID=" + HttpUtility.UrlEncode(imgID);
- }
- }