arcengine中图层路径的访问与修改

当图层可以正常访问时，可以通过如下方式得到图层的数据源路径

IFeature　pFeatureLayer = ( IFeatureLayer ) pLayer;
IFeature fc = ( IFeatureClass ) pFeatureLayer.FeatureClass;
fds = ( IFeatureDataset ) fc.FeatureDataset;
ws = ( IWorkspace ) fds.Workspace;
string s = ws.PathName.ToUpper( );

当图层不能正常访问，需要修复数据源时，上面方法获取的IFeatureClass为空，这时可以通过如下方式得到图层的数据源路径
IDataLayer pDLayer = (IDataLayer)pLayer;
IWorkspaceName ws = ((IDatasetName)(pDLayer.DataSourceName)).WorkspaceName;
this.textBox2.Text = ws.PathName;

数据源修改方法

1、fileGDB
IDataLayer2 pDLayer = (IDataLayer2)pFLayer;
IDatasetName pDsName = (IDatasetName)(pDLayer.DataSourceName);
IWorkspaceName ws = pDsName.WorkspaceName;
this.textBox2.Text = ws.PathName;
string newPath = @”J:\work\WindowsApplication1\WindowsApplication1\bin\new.gdb”;
ws.WorkspaceFactoryProgID = “esriDataSourcesGDB.FileGDBWorkspaceFactory”;
ws.PathName = newPath;
pDsName.WorkspaceName = ws;
pMapDocument.Save(true,true);

2、shp文件
IDataLayer2 pDLayer = (IDataLayer2)pFLayer;
IDatasetName pDsName = (IDatasetName)(pDLayer.DataSourceName);
IWorkspaceName ws = pDsName.WorkspaceName;
this.textBox2.Text = ws.PathName;
string newPath = @”J:\work\WindowsApplication1\WindowsApplication1\bin\”;
ws.PathName = newPath;
pDsName.WorkspaceName = ws;
pMapDocument.Save(true,true);

The WorkspaceFactoryProgID identifies the ProgID of the WorkspaceFactory object that is used to open that particular workspace.

Here is a list of some of the possible WorkspaceFactoryProgIDs:

• esriDataSourcesGDB.AccessWorkspaceFactory
• esriDataSourcesFile.ArcInfoWorkspaceFactory
• esriDataSourcesFile.CadWorkspaceFactory
• esriDataSourcesGDB.FileGDBWorkspaceFactory
• esriDataSourcesOleDB.OLEDBWorkspaceFactory
• esriDataSourcesFile.PCCoverageWorkspaceFactory
• esriDataSourcesRaster.RasterWorkspaceFactory
• esriDataSourcesGDB.SdeWorkspaceFactory
• esriDataSourcesFile.ShapefileWorkspaceFactory
• esriDataSourcesOleDB.TextFileWorkspaceFactory or esriDataSourcesFile.TextFileWorkspaceFactory
• esriDataSourcesFile.TinWorkspaceFactory
• esriDataSourcesFile.VpfWorkspaceFactory

转载链接：http://blog.sina.com.cn/s/blog_5d25ac4e0100kl1w.html

转载自：https://blog.csdn.net/yh0503/article/details/25975927