arcgis engine中图层的datasource访问与修改相关

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arcgis engine中图层的datasource访问与修改相关09-11-19 09:29:09　http://blog.csdn.net/rrrrssss00　

核心提示：arcgis engine中图层的datasource访问与修改相关

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);

本篇文章来源于GIS动力站|www.gispower.org 原文链接：http://www.gispower.org/article/arcgis/ao/2009/1119/0911199299K0H733CH3E627648888G.html