ArcGIS Server9.2 for .net 添加和删除shp图层操作源码

以下是从我的aspx.cs文件中拷贝出来的在ArcGIS Server中添加和删除shp图层的源码，用起来比较好用，代码出处是刘光的那本书。

如果使用，可以把添加图层的和删除的图层的代码写成一个通用的函数，如

    private void addPPISHPFile(string shpFilePath, string shpFileName, string LayerName, string FieldName)

    private void RemovePPISHPLayer(string LayerName)

使用就行，不多说了，关键是能解决问题。

using System;
using System.Data;
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;

using ESRI.ArcGIS.Server;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer;

public partial class Default2 : System.Web.UI.Page, ICallbackEventHandler
{
    public string addLayerCallback;
    private string callbackResponse;
    MapResourceLocal localMapResource = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        addLayerCallback = ClientScript.GetCallbackEventReference(this, "message", "processCallbackresult", "context", "postBackError", true);
    }

    string ICallbackEventHandler.GetCallbackResult()
    {
        return callbackResponse;
    }

    void ICallbackEventHandler.RaiseCallbackEvent(string eventArgument)
    {
        if (eventArgument.Contains("addlayer"))
        {
            AddLayer();
        }
        else if (eventArgument.Contains("removelayer"))
        {
            Session["layeradded"] = false;
            RemoveLayer();
        }
    }

    #region 增加图层
    //增加图层
    private void AddLayer()
    {
        MapFunctionality agsMapFunctionality = Map1.GetFunctionality(0) as MapFunctionality;
        localMapResource = (MapResourceLocal)agsMapFunctionality.Resource;

        //使用ArcObjects增加图层
        IServerContext mapContext = localMapResource.ServerContextInfo.ServerContext;

        IWorkspaceFactory workspaceFactory = (IWorkspaceFactory)mapContext.CreateObject("esriDataSourcesFile.ShapefileWorkspaceFactory");

        IFeatureWorkspace featureWorkspace = workspaceFactory.OpenFromFile(@"D:\AGS_Data\GISData", 0) as IFeatureWorkspace;
        IFeatureLayer featureLayer = (IFeatureLayer)mapContext.CreateObject("esriCarto.FeatureLayer");
        featureLayer.FeatureClass = featureWorkspace.OpenFeatureClass("States.shp");
        featureLayer.Name = "States";

        //应用着色器
        ApplyRenderer(featureLayer, mapContext);

        IMapServerObjects mapServerObjects = localMapResource.MapServer as IMapServerObjects;
        IMap map = mapServerObjects.get_Map(localMapResource.DataFrame);
        map.AddLayer(featureLayer);
        map.MoveLayer(featureLayer, 0);

        //刷新服务器对象 响应添加图层
        localMapResource.RefreshServerObjects();

        //刷新地图与Toc
        Toc1.Refresh();
        Map1.CallbackResults.CopyFrom(Toc1.CallbackResults);

        Map1.Refresh();
        callbackResponse = Map1.CallbackResults.ToString();
    }
    #endregion

    #region 渲染图层
    //设置动态要素图层的着色器对象
    private void ApplyRenderer(IFeatureLayer featureLayer, IServerContext mapContext)
    {
        IGeoFeatureLayer geoLayer = (IGeoFeatureLayer)featureLayer;

        ISimpleRenderer simpleRender = (ISimpleRenderer)mapContext.CreateObject("esriCarto.SimpleRenderer");

        IRgbColor rgbColor = (IRgbColor)mapContext.CreateObject("esriDisplay.RgbColor");

        rgbColor.Red = 0;
        rgbColor.Green = 0;
        rgbColor.Blue = 210;

        esriGeometryType geometryType = featureLayer.FeatureClass.ShapeType;
        if (geometryType == esriGeometryType.esriGeometryPoint)
        {
            ISimpleMarkerSymbol symbol = (ISimpleMarkerSymbol)mapContext.CreateObject("esriDisplay.SimpleMarkerSymbol");
            symbol.Color = (IColor)rgbColor;
            simpleRender.Symbol = (ISymbol)symbol;
        }
        else if (geometryType == esriGeometryType.esriGeometryPolyline)
        {
            ISimpleLineSymbol symbol = (ISimpleLineSymbol)mapContext.CreateObject("esriDisplay.SimpleLineSymbol");
            symbol.Color = (IColor)rgbColor;
            simpleRender.Symbol = (ISymbol)symbol;
        }
        else if(geometryType == esriGeometryType.esriGeometryPolygon)
        {
            ISimpleFillSymbol symbol = (ISimpleFillSymbol)mapContext.CreateObject("esriDisplay.SimpleFillSymbol");
            symbol.Color = (IColor)rgbColor;
            simpleRender.Symbol = (ISymbol)symbol;
        }
        else
        {
            throw new Exception("不能确定图层类型!");
        }
        geoLayer.Renderer = (IFeatureRenderer)simpleRender;
    }
    #endregion

    #region 删除图层
    //删除图层
    private void RemoveLayer()
    {
        MapFunctionality agsMapFunctionality = Map1.GetFunctionality(0) as MapFunctionality;
        localMapResource = (MapResourceLocal)agsMapFunctionality.Resource;

        //通过ArcObjects 删除动态添加的图层
        IMapServerObjects mapServerObjects = localMapResource.MapServer as IMapServerObjects;
        IMap map = mapServerObjects.get_Map(localMapResource.DataFrame);

        ILayer workingLayer = null;
        IEnumLayer enumLayer = map.get_Layers(null, true);

        ILayer loopLayer = null;

        while ((loopLayer = enumLayer.Next()) != null)
        {
            if (loopLayer.Name == "States")
            {
                workingLayer = loopLayer;
            }
        }

        map.DeleteLayer(workingLayer);

        //刷新服务器对象,响应删除图层
        localMapResource.RefreshServerObjects();

        Toc1.Refresh();
        Map1.CallbackResults.CopyFrom(Toc1.CallbackResults);

        Map1.Refresh();
        callbackResponse = Map1.CallbackResults.ToString();
    }
    #endregion

    protected void Button1_Click(object sender, EventArgs e)
    {
        AddLayer();
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        RemoveLayer();
    }
}