打开各种类型的featureclass
来源：http://www.cnblogs.com/wall/archive/2008/05/20/1203377.html
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打开各种类型的featureclass#Region "打开各种类型的featureclass"
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/**/''' <summary>
3
''' 打开Access，返回featureclass
4 ''' </summary>
5 ''' <param name="sDBName">Access文件名(全路径)</param>
6 ''' <param name="sFCName">featureclass名称</param>
7 ''' <returns>要素类featureclass</returns>
8
''' <remarks></remarks>
9 Public Function OpenAccessDatabase()Function OpenAccessDatabase(ByVal sDBName As String, ByVal sFCName As String) As IFeatureClass
10 Dim pPropset As IPropertySet
11 pPropset = New PropertySet
12 Dim pFact As IWorkspaceFactory
13 Dim pWorkspace As IWorkspace
14 pPropset.SetProperty("DATABASE", sDBName)
15 pFact = New AccessWorkspaceFactory
16 pWorkspace = pFact.Open(pPropset, 0)
17 Dim pFeatureWorkspace As IFeatureWorkspace
18 pFeatureWorkspace = pWorkspace
19 Dim pFeatureClass As IFeatureClass
20 pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)
21 Return pFeatureClass
22 End Function
23/**/''' <summary>
24 ''' 打开Shapefile，返回featureclass
25 ''' </summary>
26 ''' <param name="sDBName">shapefile路径</param>
27 ''' <param name="sFCName">featureclass名称</param>
28 ''' <returns>要素类featureclass</returns>
29 ''' <remarks></remarks>
30 Public Function OpenShapefile()Function OpenShapefile(ByVal sDBName As String, ByVal sFCName As String) As IFeatureClass
31 Dim pPropset As IPropertySet
32 pPropset = New PropertySet
33 Dim pFact As IWorkspaceFactory
34 Dim pWorkspace As IWorkspace
35 pPropset.SetProperty("DATABASE", sDBName)
36 pFact = New ShapefileWorkspaceFactory
37 pWorkspace = pFact.Open(pPropset, 0)
38 Dim pFeatureWorkspace As IFeatureWorkspace
39 pFeatureWorkspace = pWorkspace
40 Dim pFeatureClass As IFeatureClass
41 pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)
42 Return pFeatureClass
43 End Function
44/**/''' <summary>
45 ''' 打开SDE，返回featureclass
46 ''' </summary>
47 ''' <param name="sServerName">sde服务名称</param>
48 ''' <param name="sFCName">featureclass名称</param>
49 ''' <returns>要素类featureclass</returns>
50 ''' <remarks></remarks>
51Public Function OpenSDE()Function OpenSDE(ByVal sServerName As String, ByVal sFCName As String) As IFeatureClass
52 Dim pPropset As IPropertySet
53 pPropset = New PropertySet
54 Dim pFact As IWorkspaceFactory
55 Dim pWorkspace As IWorkspace
56 With pPropset
57 .SetProperty("Server", sServerName)
58 .SetProperty("Instance", "sdemss")
59 .SetProperty("Database", "sde") 'Ignored with ArcSDE for Oracle
60 .SetProperty("user", "sde")
61 .SetProperty("password", "go")
62 .SetProperty("version", "sde.DEFAULT")
63 End With
64 pFact = New SdeWorkspaceFactory
65 pWorkspace = pFact.Open(pPropset, 0)
66 Dim pFeatureWorkspace As IFeatureWorkspace
67 pFeatureWorkspace = pWorkspace
68 Dim pFeatureClass As IFeatureClass
69 pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)
70 Return pFeatureClass
71 End Function
72/**/''' <summary>
73 ''' 打开Raster，返回dataset
74 ''' </summary>
75 ''' <param name="sDir">路径名</param>
76 ''' <param name="sFile">文件名</param>
77 ''' <returns>返回RasterDataset</returns>
78 ''' <remarks></remarks>
79 Public Function OpenRasterDataset()Function OpenRasterDataset(ByVal sDir As String, ByVal sFile As String) As IRasterDataset
80 'Open the raster dataset with the given name.
81 'sDir is the directory the file resides
82 'sFile is the filename
83 Dim pWsFact As IWorkspaceFactory
84 Dim pWs As IRasterWorkspace
85 Dim pRasterDataset As IRasterDataset
86 'Open the workspace
87 pWsFact = New RasterWorkspaceFactory
88 pWs = pWsFact.OpenFromFile(sDir, 0)
89 'Open the raster dataset
90 pRasterDataset = pWs.OpenRasterDataset(sFile)
91 'Return
92 pWsFact = Nothing
93 pWs = Nothing
94 pRasterDataset = Nothing
95 Return pRasterDataset
96 End Function
97
#End Region
打开各种类型的featureclass#Region "打开各种类型的featureclass"2
/**/''' <summary>3
''' 打开Access，返回featureclass4
''' </summary>5
''' <param name="sDBName">Access文件名(全路径)</param>6
''' <param name="sFCName">featureclass名称</param>7
''' <returns>要素类featureclass</returns>8
''' <remarks></remarks>9
Public Function OpenAccessDatabase()Function OpenAccessDatabase(ByVal sDBName As String, ByVal sFCName As String) As IFeatureClass10
Dim pPropset As IPropertySet11
pPropset = New PropertySet12
Dim pFact As IWorkspaceFactory13
Dim pWorkspace As IWorkspace14
pPropset.SetProperty("DATABASE", sDBName)15
pFact = New AccessWorkspaceFactory16
pWorkspace = pFact.Open(pPropset, 0)17
Dim pFeatureWorkspace As IFeatureWorkspace18
pFeatureWorkspace = pWorkspace19
Dim pFeatureClass As IFeatureClass20
pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)21
Return pFeatureClass22
End Function23
/**/''' <summary>24
''' 打开Shapefile，返回featureclass25
''' </summary>26
''' <param name="sDBName">shapefile路径</param>27
''' <param name="sFCName">featureclass名称</param>28
''' <returns>要素类featureclass</returns>29
''' <remarks></remarks>30
Public Function OpenShapefile()Function OpenShapefile(ByVal sDBName As String, ByVal sFCName As String) As IFeatureClass31
Dim pPropset As IPropertySet32
pPropset = New PropertySet33
Dim pFact As IWorkspaceFactory34
Dim pWorkspace As IWorkspace35
pPropset.SetProperty("DATABASE", sDBName)36
pFact = New ShapefileWorkspaceFactory37
pWorkspace = pFact.Open(pPropset, 0)38
Dim pFeatureWorkspace As IFeatureWorkspace39
pFeatureWorkspace = pWorkspace40
Dim pFeatureClass As IFeatureClass41
pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)42
Return pFeatureClass43
End Function44
/**/''' <summary>45
''' 打开SDE，返回featureclass46
''' </summary>47
''' <param name="sServerName">sde服务名称</param>48
''' <param name="sFCName">featureclass名称</param>49
''' <returns>要素类featureclass</returns>50
''' <remarks></remarks>51
Public Function OpenSDE()Function OpenSDE(ByVal sServerName As String, ByVal sFCName As String) As IFeatureClass52
Dim pPropset As IPropertySet53
pPropset = New PropertySet54
Dim pFact As IWorkspaceFactory55
Dim pWorkspace As IWorkspace56
With pPropset57
.SetProperty("Server", sServerName)58
.SetProperty("Instance", "sdemss")59
.SetProperty("Database", "sde") 'Ignored with ArcSDE for Oracle60
.SetProperty("user", "sde")61
.SetProperty("password", "go")62
.SetProperty("version", "sde.DEFAULT")63
End With64
pFact = New SdeWorkspaceFactory65
pWorkspace = pFact.Open(pPropset, 0)66
Dim pFeatureWorkspace As IFeatureWorkspace67
pFeatureWorkspace = pWorkspace68
Dim pFeatureClass As IFeatureClass69
pFeatureClass = pFeatureWorkspace.OpenFeatureClass(sFCName)70
Return pFeatureClass71
End Function72
/**/''' <summary>73
''' 打开Raster，返回dataset74
''' </summary>75
''' <param name="sDir">路径名</param>76
''' <param name="sFile">文件名</param>77
''' <returns>返回RasterDataset</returns>78
''' <remarks></remarks>79
Public Function OpenRasterDataset()Function OpenRasterDataset(ByVal sDir As String, ByVal sFile As String) As IRasterDataset80
'Open the raster dataset with the given name.81
'sDir is the directory the file resides82
'sFile is the filename83
Dim pWsFact As IWorkspaceFactory84
Dim pWs As IRasterWorkspace85
Dim pRasterDataset As IRasterDataset86
'Open the workspace87
pWsFact = New RasterWorkspaceFactory88
pWs = pWsFact.OpenFromFile(sDir, 0)89
'Open the raster dataset90
pRasterDataset = pWs.OpenRasterDataset(sFile)91
'Return92
pWsFact = Nothing93
pWs = Nothing94
pRasterDataset = Nothing95
Return pRasterDataset96
End Function97
#End Region