收集资料如下：
打开cad文件的几种方法
方法一、
IWorkspaceFactory pWorkspaceFactory;
IFeatureWorkspace pFeatureWorkspace;
IFeatureLayer pFeatureLayer;
IFeatureDataset pFeatureDataset;
//打开CAD数据集
pWorkspaceFactory = new CadWorkspaceFactoryClass();
pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(directoryPath, 0);
//打开一个要素集
pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(fileName);
//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
//对CAD文件中的要素进行遍历处理
for (int i = 0; i < pFeatureClassContainer.ClassCount - 1; i++)
{
IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
if (pFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
{
//如果是注记，则添加注记层
pFeatureLayer = new CadAnnotationLayerClass();
}
else//如果是点、线、面，则添加要素层
{
pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.Name = pFeatureClass.AliasName;
pFeatureLayer.FeatureClass = pFeatureClass;
this.axmc_Main.Map.AddLayer(pFeatureLayer);
this.axmc_Main.ActiveView.**();
}
}
方法二、
//--定义工作空间，并用CadWorkspaceFactoryClass()实例化它
IWorkspaceFactory pWorkspaceFactory = new CadWorkspaceFactoryClass();
//--打开相应的工作空间，并赋值给要素空间，OpenFromFile（）
//--中的参数为CAD文件夹的路径
IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(directoryPath, 0) as IFeatureWorkspace;
/*--打开线要素类，如果要打开点类型的要素，需要把下边的代码该成：
*-- IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass (fileName + ":point");
*-- 由此可见fileName为CAD图的名字，后边加上要打开的要素类的类型，中间用冒号
*-- 隔开，大家可以想想多边形和标注是怎么打开的。 */
//point polyline
IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName + ":point");
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.FeatureClass = pFeatureClass;
this.axmc_Main.Map.AddLayer(pFeatureLayer);
this.axmc_Main.ActiveView.**();
方法三、
/*--下边的两行代码是定义一个CAD工作空间，然后打开它，但这次不是赋值给
--IFeatureWorkspace对象,而是赋值给IWorkspace定义的对象*/
IWorkspaceFactory pWorkspaceFactory = new CadWorkspaceFactoryClass();
IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(directoryPath, 0);
//--定义一个CAD画图空间，并把上边打开的工作空间赋给它
ICadDrawingWorkspace pCadDrawingWorkspace = pWorkspace as ICadDrawingWorkspace;
//--定义一个CAD的画图数据集，并且打开上边指定的工作空间中一幅CAD图
//--然后赋值给CAD数据集
ICadDrawingDataset pCadDrawingDataset = pCadDrawingWorkspace.OpenCadDrawingDataset(fileName);
//--通过ICadLayer类，把上边得到的CAD数据局赋值给ICadLayer类对象的
//--CadDrawingDataset属性
ICadLayer pCadLayer = new CadLayerClass();
pCadLayer.CadDrawingDataset = pCadDrawingDataset;
//--利用MapControl加载CAD层
this.axmc_Main.Map.AddLayer(pCadLayer);
this.axmc_Main.ActiveView.**();
方法四、
IWorkspaceFactory pWorkspaceFactory = new CadWorkspaceFactoryClass();
IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(directoryPath, 0) as IFeatureWorkspace;
IFeatureDataset pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(fileName);
IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
for (int i = 0; i < pFeatureClassContainer.ClassCount - 1; i++)
{
IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.FeatureClass = pFeatureClass;
//ICadLayer pCadLayer = new CadLayerClass();
//pCadLayer = pFeatureLayer as ICadLayer;
this.axmc_Main.Map.AddLayer(pFeatureLayer);
this.axmc_Main.ActiveView.**();
}
方法五、
//Add passed file to MapControl
ICadDrawingDataset pCadDrawingDataset = GetCadDrawingDataset(directoryPath, fileName);
if (pCadDrawingDataset == null) return;
ICadLayer pCadLayer = new CadLayerClass();
pCadLayer.CadDrawingDataset = pCadDrawingDataset;
pCadLayer.Name = fileName;
this.axmc_Main.AddLayer(pCadLayer, 0);
/// <summary>
/// 获取记录集
/// </summary>
/// <param name="directoryPath"></param>
/// <param name="fileName"></param>
/// <returns></returns>
private ICadDrawingDataset GetCadDrawingDataset(string directoryPath, string fileName)
{
//Create a WorkspaceName object
IWorkspaceName pWorkspaceName = new WorkspaceNameClass();
pWorkspaceName.WorkspaceFactoryProgID = "esriDataSourcesFile.CadWorkspaceFactory";
pWorkspaceName.PathName = directoryPath;
//Create a CadDrawingName object
IDatasetName pDatasetName = new CadDrawingNameClass();
pDatasetName.Name = fileName;
pDatasetName.WorkspaceName = pWorkspaceName;
//Open the CAD drawing
IName pName = (IName)pDatasetName;
return (ICadDrawingDataset)pName.Open();
}
需要注意
如果你的ArcGIS版本是V9.2的话,可能是因为你的文件名中含有中文字符的原因.据我所知,在ArcGIS9.2中无法显示文件名含有中文字符的CAD文件.你可以在ArcMap中直接打开试试,如果也无法显示的话,可能是文件名的问题(注:路径中也不能含有中文字符).
GIS for Web应用开发之道
插件式GIS应用框架的设计与实现
public void esriDataSourcesFile_ICadDrawingDataset_Example(string nameOfFile, string nameOfCadDrawing)
{
//Set the Workspace Factory
IWorkspaceFactory workspaceFactory = new ESRI.ArcGIS.DataSourcesFile.CadWorkspaceFactoryClass();
//Open the Workspace
IWorkspace workspace = workspaceFactory.OpenFromFile(nameOfFile, 0);
//set the CadDrawingWorkspace
ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace cadDrawingWorkspace = (ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace)workspace;
//open the CadDrawingDataset
ESRI.ArcGIS.DataSourcesFile.ICadDrawingDataset cadDrawingDataset = cadDrawingWorkspace.OpenCadDrawngDataset(nameOfCadDrawing);
//create the CadLayer
ESRI.ArcGIS.Carto.ICadLayer cadLayer = new ESRI.ArcGIS.Carto.CadLayerClass();
//set the CadLayer to the CadDrawingDataset
cadLayer.CadDrawingDataset = cadDrawingDataset;
//list if the CadDrawingDataset exists
Console.WriteLine("Does drawing exist: {0}" , cadLayer.CadDrawingDataset.Exists );
//list the CadDrawingDataset FilePath
Console.WriteLine("CAD Drawing Path: {0}" , cadLayer.CadDrawingDataset.FilePath );
//list if the CadDrawingDataset is 2d
Console.WriteLine("Is Drawing 2d?: {0}" , cadLayer.CadDrawingDataset.Is2d);
//list if the CadDrawingDataset is 3d
Console.WriteLine("Is Drawing 3d?: {0}" , cadLayer.CadDrawingDataset.Is3d );
//list if the CadDrawingDataset is an AutoCAD drawing file
Console.WriteLine("Is Drawing from AutoCAD?: {0}" , cadLayer.CadDrawingDataset.IsAutoCad );
//list if the CadDrawingDataset is an MicroSation drawing file
Console.WriteLine("Is Drawing from MicroStation?: {0}" , cadLayer.CadDrawingDataset.IsDgn); }
中间过程实验代码：
实验1
public static string AddCADLayer(Map map1, Toc toc)
{
// 得到服务器上下文对象
MapFunctionality agsMapFunctionlity = map1.GetFunctionality(1) as MapFunctionality;
MapResourceLocal localMapResource = (MapResourceLocal)agsMapFunctionlity.Resource;
ESRI.ArcGIS.Server.IServerContext mapContext = localMapResource.ServerContextInfo.ServerContext;
//// 增加图层
//ESRI.ArcGIS.Carto.FeatureLayer pFeatureLayer = null;
//IFeatureLayer pFeatureLayer;
//打开CAD数据集
IWorkspaceFactory factory = (IWorkspaceFactory)mapContext.CreateObject("esriDataSourcesFile.CADWorkspaceFactory");
//pWorkspaceFactory = new CadWorkspaceFactoryClass();
//pWorkspaceFactory = new pWorkspaceFactory();
ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace pFeatureWorkspace = (ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace)factory.OpenFromFile(@"C:\Inetpub\wwwroot\NorthAmerica", 0);
//IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)factory.OpenFromFile(@"C:\Inetpub\wwwroot\NorthAmerica", 0);
//打开一个要素集
ESRI.ArcGIS.DataSourcesFile.ICadDrawingDataset pFeatureDataset = (ESRI.ArcGIS.DataSourcesFile.ICadDrawingDataset)pFeatureWorkspace.OpenCadDrawingDataset("New_Shapefile_ExportCAD.DWG");
//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
ESRI.ArcGIS.Carto.ICadLayer pFeatureClassContainer = new ESRI.ArcGIS.Carto.CadLayerClass();
pFeatureClassContainer.CadDrawingDataset = pFeatureDataset;
//IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
//对CAD文件中的要素进行遍历处理
//for (int i = 0; i < pFeatureClassContainer.ClassCount - 1; i++)
//{
// IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
// if (pFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
// {
// //如果是注记，则添加注记层
// pFeatureLayer = (ESRI.ArcGIS.Carto.FeatureLayer)mapContext.CreateObject("esriCarto.CadAnnotationLayerClass");
// }
// else//如果是点、线、面，则添加要素层
// {
// pFeatureLayer = (ESRI.ArcGIS.Carto.FeatureLayer)mapContext.CreateObject("esriCarto.CadFeatureLayer");
// pFeatureLayer.Name = pFeatureClass.AliasName;
// }
//}
ESRI.ArcGIS.Carto.IMapServerObjects mapServerObjects = localMapResource.MapServer as ESRI.ArcGIS.Carto.IMapServerObjects;
ESRI.ArcGIS.Carto.IMap map = mapServerObjects.get_Map(localMapResource.DataFrame) as ESRI.ArcGIS.Carto.IMap;
//if (pFeatureLayer != null)
//{
map.AddLayer(pFeatureClassContainer);
// //map.MoveLayer(pFeatureLayer, map.LayerCount - 1);
//}
//刷新服务器对象，响应添加图层
localMapResource.RefreshServerObjects();
//Toc控件刷新
toc.Refresh();
map1.CallbackResults.CopyFrom(toc.CallbackResults);
map1.Refresh();
return map1.CallbackResults.ToString();
}
实验2
public static string AddCADLayer2(Map map1, Toc toc)
{
// 得到服务器上下文对象
MapFunctionality agsMapFunctionlity = map1.GetFunctionality(1) as MapFunctionality;
MapResourceLocal localMapResource = (MapResourceLocal)agsMapFunctionlity.Resource;
ESRI.ArcGIS.Server.IServerContext mapContext = localMapResource.ServerContextInfo.ServerContext;
// 增加图层
ESRI.ArcGIS.Carto.IFeatureLayer pFeatureLayer = null;
//IFeatureLayer pFeatureLayer;
//打开CAD数据集
IWorkspaceFactory factory = (IWorkspaceFactory)mapContext.CreateObject("esriDataSourcesFile.CADWorkspaceFactory");
//pWorkspaceFactory = new CadWorkspaceFactoryClass();
//pWorkspaceFactory = new pWorkspaceFactory();
IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)factory.OpenFromFile(@"C:\Inetpub\wwwroot\NorthAmerica", 0);
//打开一个要素集
IFeatureDataset pFeatureDataset = (IFeatureDataset)pFeatureWorkspace.OpenFeatureDataset("New_Shapefile_ExportCAD.DWG");
//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
//对CAD文件中的要素进行遍历处理
for (int i = 0; i < pFeatureClassContainer.ClassCount - 3; i++)
{
IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
if (pFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
{
//如果是注记，则添加注记层
pFeatureLayer = (ESRI.ArcGIS.Carto.IFeatureLayer)mapContext.CreateObject("esriCarto.CadAnnotationLayerClass");
//pFeatureLayer = new CadAnnotationLayerClass();
}
else//如果是点、线、面，则添加要素层
{
pFeatureLayer = (ESRI.ArcGIS.Carto.IFeatureLayer)mapContext.CreateObject("esriCarto.CadFeatureLayer");
pFeatureLayer.Name = pFeatureClass.AliasName;
pFeatureLayer.FeatureClass = pFeatureClass;
ESRI.ArcGIS.Carto.IGeoFeatureLayer iglayer = (ESRI.ArcGIS.Carto.IGeoFeatureLayer)pFeatureLayer;
ESRI.ArcGIS.Carto.ISimpleRenderer isr = (ESRI.ArcGIS.Carto.ISimpleRenderer)mapContext.CreateObject("esriCarto.SimpleRenderer");
ESRI.ArcGIS.Display.IRgbColor irgbc = (ESRI.ArcGIS.Display.IRgbColor)mapContext.CreateObject("esriDisplay.RgbColor");
irgbc.Red = 255;
irgbc.Green = 0;
irgbc.Blue = 0;
ESRI.ArcGIS.Geometry.esriGeometryType featype = pFeatureLayer.FeatureClass.ShapeType;
if (featype == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint)
{
ESRI.ArcGIS.Display.ISimpleMarkerSymbol ifs = (ESRI.ArcGIS.Display.ISimpleMarkerSymbol)mapContext.CreateObject("esriDisplay.SimpleMarkerSymbol");
ifs.Color = (ESRI.ArcGIS.Display.IColor)irgbc;
isr.Symbol = (ESRI.ArcGIS.Display.ISymbol)ifs;
}
else if (featype == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline)
{
ESRI.ArcGIS.Display.ISimpleLineSymbol ifs = (ESRI.ArcGIS.Display.ISimpleLineSymbol)mapContext.CreateObject("esriDisplay.SimpleLineSymbol");
ifs.Color = (ESRI.ArcGIS.Display.IColor)irgbc;
isr.Symbol = (ESRI.ArcGIS.Display.ISymbol)ifs;
}
else if (featype == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon)
{
ESRI.ArcGIS.Display.ISimpleFillSymbol ifs = (ESRI.ArcGIS.Display.ISimpleFillSymbol)mapContext.CreateObject("esriDisplay.SimpleFillSymbol");
ifs.Color = (ESRI.ArcGIS.Display.IColor)irgbc;
isr.Symbol = (ESRI.ArcGIS.Display.ISymbol)ifs;
}
else
{
ESRI.ArcGIS.Display.ISimpleLineSymbol ifs = (ESRI.ArcGIS.Display.ISimpleLineSymbol)mapContext.CreateObject("esriDisplay.SimpleLineSymbol");
ifs.Color = (ESRI.ArcGIS.Display.IColor)irgbc;
isr.Symbol = (ESRI.ArcGIS.Display.ISymbol)ifs;
//throw new Exception("图层类型不确定！");
}
iglayer.Renderer = (ESRI.ArcGIS.Carto.IFeatureRenderer)isr;
//IMapServer ms = (IMapServer)in_mapcontext.ServerObject;
//IMapServerObjects2 mso = (IMapServerObjects2)ms;
//string mapname = ms.DefaultMapName;
//IMap map = mso.get_Map(mapname);
//map.AddLayer(pFeatureLayer);
//mso.RefreshServerObjects();
}
}
//// 从上下文对象中得到服务器对象
//IMapServer ms = (IMapServer)mapContext.ServerObject;
//IMapServerInfo mapInfo = ms.GetServerInfo(ms.DefaultMapName);
//IMapDescription NEWmapDesc = mapInfo.DefaultMapDescription;
//// 释放服务器上下文对象
//mapContext.ReleaseContext();
ESRI.ArcGIS.Carto.IMapServerObjects mapServerObjects = localMapResource.MapServer as ESRI.ArcGIS.Carto.IMapServerObjects;
ESRI.ArcGIS.Carto.IMap map = mapServerObjects.get_Map(localMapResource.DataFrame) as ESRI.ArcGIS.Carto.IMap;
if (pFeatureLayer != null)
{
map.AddLayer(pFeatureLayer);
//移动层到底层
//map.MoveLayer(pFeatureLayer, map.LayerCount - 1);
}
//刷新服务器对象，响应添加图层
localMapResource.RefreshServerObjects();
//Toc控件刷新
toc.Refresh();
map1.CallbackResults.CopyFrom(toc.CallbackResults);
map1.Refresh();
return map1.CallbackResults.ToString();
}
最终调试正确代码：
public static string AddCADLayer(Map map1, Toc toc)
{
// 得到服务器上下文对象
MapFunctionality agsMapFunctionlity = map1.GetFunctionality(1) as MapFunctionality;
MapResourceLocal localMapResource = (MapResourceLocal)agsMapFunctionlity.Resource;
ESRI.ArcGIS.Server.IServerContext mapContext = localMapResource.ServerContextInfo.ServerContext;
// 增加图层
ESRI.ArcGIS.Carto.IFeatureLayer pFeatureLayer = null;
//打开CAD数据集
IWorkspaceFactory factory = (IWorkspaceFactory)mapContext.CreateObject("esriDataSourcesFile.CADWorkspaceFactory");
IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)factory.OpenFromFile(@"C:\Inetpub\wwwroot\NorthAmerica", 0);
//打开一个要素集
IFeatureDataset pFeatureDataset = (IFeatureDataset)pFeatureWorkspace.OpenFeatureDataset("New_Shapefile_ExportCAD.DWG");
//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
//对CAD文件中的要素进行遍历处理
for (int i = 0; i < pFeatureClassContainer.ClassCount - 1; i++)
{
IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
if (pFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
{
//如果是注记，则添加注记层
pFeatureLayer = (ESRI.ArcGIS.Carto.IFeatureLayer)mapContext.CreateObject("esriCarto.CadAnnotationLayerClass");
}
else//如果是点、线、面，则添加要素层
{
pFeatureLayer = (ESRI.ArcGIS.Carto.IFeatureLayer)mapContext.CreateObject("esriCarto.CadFeatureLayer");
pFeatureLayer.Name = pFeatureClass.AliasName;
pFeatureLayer.FeatureClass = pFeatureClass;
ESRI.ArcGIS.Carto.IMapServerObjects mapServerObjects = localMapResource.MapServer as ESRI.ArcGIS.Carto.IMapServerObjects;
ESRI.ArcGIS.Carto.IMap map = mapServerObjects.get_Map(localMapResource.DataFrame) as ESRI.ArcGIS.Carto.IMap;
map.AddLayer(pFeatureLayer);
//刷新服务器对象，响应添加图层
localMapResource.RefreshServerObjects();
}
}
//Toc控件刷新
toc.Refresh();
map1.CallbackResults.CopyFrom(toc.CallbackResults);
map1.Refresh();
return map1.CallbackResults.ToString();
}