1  public IWorkspace Getworkspace()

 2   {

 3       IPropertySet propertySet = new PropertySetClass();

 4       propertySet.SetProperty("SERVER", "127.0.0.1");

 5       propertySet.SetProperty("INSTANCE", "sde:sqlserver:127.0.0.1");

 6       propertySet.SetProperty("DATABASE", "sde");

 7       propertySet.SetProperty("USER", "sa");

 8       propertySet.SetProperty("PASSWORD", "sa");

 9       propertySet.SetProperty("VERSION", "SDE.DEFAULT");

10 　　 　Type factoryType = Type.GetTypeFromProgID("esriDataSourcesGDB.SdeWorkspaceFactory");

11       IWorkspaceFactory workspaceFactory = (IWorkspaceFactory)Activator.CreateInstance(factoryType);

12       return workspaceFactory.Open(propertySet, 0);

13  }