arcengine 判断layer类型

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分为两种方法判断：第一种不能判断是否为shp、gdb、mdb。第二种判断较为全面

1、在C# + ArcEngine开发中，判断axMapControl中的图层是什么样的类型，代码如下

if (axMapControl1.LayerCount > 0)
{
for (int i = 0; i < axMapControl1.LayerCount; i++)
{
ILayer pLayer = axMapControl1.get_Layer(i);
if (pLayer is IFeatureLayer)
{
MessageBox.Show("IFeatureLayer name : " + pLayer.Name);
}
else if (pLayer is IRasterLayer)
{
MessageBox.Show("IRasterLayer name : " + pLayer.Name);
}
}
}

更多类型的判断，写法类似。

2、通过IWorkspaceName接口的WorkspaceFactoryProgID属性来判断
IDataset dataset = layer as IDataset;

IFeatureClass pFC = pFeatureLyr.FeatureClass;
IDataset dataset = pFC as IDataset;
IWorkspaceName ws = ((IDatasetName)(dataset.FullName)).WorkspaceName;
if (ws.WorkspaceFactoryProgID.IndexOf("AccessWorkspaceFactory") > -1)
{
}
else if (ws.WorkspaceFactoryProgID.IndexOf("FileGDBWorkspaceFactory") > -1)
{
}
else if (ws.WorkspaceFactoryProgID.IndexOf("SdeWorkspaceFactory") > -1)
{
}
……
WorkspaceFactoryProgID

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

转：http://blog.csdn.net/jixg1800/article/details/7761474

http://blog.sina.com.cn/s/blog_9d0a434f0102worm.html

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