Private Sub mnuDel_Click()
'删除节点
Dim sKey As String
'Dim sFile As String
Dim oFS As FileSystemObject
Dim sPathFile As String
Dim sIndex As String
Dim sFlag As String
Set oFS = New FileSystemObject
On Error Resume Next
If MsgBox("确定要删除此类别[" & TreeView1.SelectedItem.Text & "]", vbYesNo, "静态信息") = vbYes Then
sKey = TreeView1.SelectedItem.Key
sIndex = TreeView1.SelectedItem.Index
' sFile = sContentPath & sKey & "*" & ".htm"
' sFlag = Check(sIndex)
sFlag = Len(sKey) - 1
If RemoveInfo(sKey) Then
TreeView1.Nodes.Remove TreeView1.SelectedItem.Index
sPathFile = Dir(sContentPath)
While (sPathFile <> "")
If Mid(sPathFile, 2, sFlag) = Right(sKey, Len(sKey) - 1) Then
' oFS.DeleteFile sPathFile, True
Kill sContentPath & sPathFile
End If
sPathFile = Dir
Wend
If TreeView1.SelectedItem.Children = 0 Then
TreeView1.SelectedItem.Image = "closed"
End If
End If
End If
End Sub
补充函数Dir用法,Dir(Path)遍历指定目录下的所有文件,第一次返回第一个文件,如果不想重复遍历,下一次调用时不要加参数。
函数Kill用法,Kill(Path&file)删除绝对路径下的文件,不可以缺少目录(或者只写文件名)。
While….Wend循环,类似于C语言的While循环。
If嵌套调用,If…Then…Elseif..Then….EndIf。
Private Function RemoveInfo(sSearch As String) As Boolean
Dim sSQL As String
Dim objDataAccess As clsDataAccess
RemoveInfo = False
On Error GoTo errHandle
' sSQL = "Delete From BCCB_Info Where Id=" & Right(sSearch, Len(sSearch) - 1)
sSQL = "Delete From BCCB_Info Where Id like '" & Right(sSearch, Len(sSearch) - 1) & "%'"
Set objDataAccess = New clsDataAccess
If objDataAccess.ExecSQL(sSQL) Then RemoveInfo = True
Set objDataAccess = Nothing
Exit Function
errHandle:
RemoveInfo = False
Call WriteLog(DEBUG_LEVEL, "frmBCCBInfo.RemoveInfo Error" & err.Description)
Set objDataAccess = Nothing
End Function
补充语法:
操作数据库过程:
声明一个连接,建立或者实例化一个连接,准备好SQL数据库语句,执行语句,释放连接(适用于Access)。
声明一个连接,建立或者实例化一个连接,声明一个数据集,建立或者实例化一个数据集,准备SQL数据库语句,执行数据库语句,释放数据集,释放连接(适用于ADO.RecordSet)。
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