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3.1 ÀRºA¹Ï¡]Ãþµ²ºc¡^
frmBom
clsSubProduct
-m_strCnn:String
-n_subProduct:RecordSet
-n_ConnectionString:String
-DoLoadNode(inout vNode:Node)
-DoQuery(in strProductID:String)
-btnQuery_Click()
-tvwBom_Expand(in Node:Node)
-tvwBom_NodeClick(in Node:Node)
+get_ConnectionString():String
+let_ConncctionString(in strValue:String)
+get_SubProduct():RecordSet
-Class_Initialize()
+DoQuery(in strProductID:String)
-Class_Terminate()
3.2 ¼Æ¾Ú®w³]p
CREATE TABLE ª«®ÆÀÉ®×
(
ª«®Æ½s½X VARCHAR(20),
ª«®Æ¦WºÙ VARCHAR(100),
CONSTRAINT PK_ª«®ÆÀÉ®× PRIMARY KEY (ª«®Æ½s½X)
)
CREATE TABLE ª«®Æ²M³æ
(
ª«®Æ½s½X VARCHAR(20),
¤W¯Å½s½X VARCHAR(20),
³æ¦ì¥Î¶q NUMERIC(18, ,
CONSTRAINT PK_ª«®Æ²M³æ PRIMARY KEY (ª«®Æ½s½X,¤W¯Å½s½X)
)
3.3 ¸Ô²Ó³]p
3.3.1 ÃþfrmBom
3.3.1.1 ¤å¥ó¦W¡GfrmBom.frm
3.3.1.2 ¬É±±±¥ó¦Cªí¡G
±±¥óÃþ«¬
±±¥ó¦WºÙ
Äݩʳ]¸m
Label
Lbl
Name:lbl
AutoSize:True
Caption:¡vª«®Æ½s½X¡v
TextBox
txtProductID
Name:txtProductID
Text:¡v¡v
CommandButton
btnQuery
Name:btnQuery
Caption:¡v¬d¸ß¡v
TreeView
tvwBom
Name:tvwBom
3.3.1.3 ¥N½X¡G
¥N½X: | Option Explicit
Dim m_strCnn As String '©w¸q¼Ò¶ô¯Å³s±µ¦r²Å¦êÅܶq
Private Sub DoLoadNode(ByRef vNode As Node)
'¥\¯à¡G¦bTreeView¥[¸ü¤U¯Åª«®Æ½s½X
'¿é¤J¡G³Q¥[¸üªºª«®Æ¸`ÂI
'¿é¥X¡GµL
Dim cSubProduct As clsSubProduct
Dim cSubProduct2 As clsSubProduct
Dim nod As Node
Dim nod2 As Node
Dim intI As Integer
'²M°£©Ò¦³¤U¯ÅNODE
For intI = 0 To vNode.Children - 1
tvwBom.Nodes.Remove vNode.Child.Key
Next intI
'«·s¸Ë¤J©Ò¦³¤U¯Å¸`ÂI
Set cSubProduct = New clsSubProduct
With cSubProduct
.ConnectionString = m_strCnn
.DoQuery vNode.Tag
While Not .SubProduct.EOF
'¥[¸ü²Ä¤@¼h¤l¸`ÂI
Set nod = tvwBom.Nodes.Add(vNode.Key, tvwChild, vNode.Key & "_" & .SubProduct.Fields("ª«®Æ½s½X").Value, .SubProduct.Fields("ª«®Æ¦WºÙ").Value)
nod.Tag = .SubProduct.Fields("ª«®Æ½s½X").Value
'--------------------------------------------------------
'¦pªGn§¹¥þ¥[¸ü«h¦b¦¹¶i¦æ»¼Âk½Õ¥Î
'DoLoadNode nod
'--------------------------------------------------------
Set cSubProduct2 = New clsSubProduct
cSubProduct2.ConnectionString = m_strCnn
cSubProduct2.DoQuery nod.Tag
While Not cSubProduct2.SubProduct.EOF
'¥[¸ü²Ä¤G¼h¤l¸`ÂI
Set nod2 = tvwBom.Nodes.Add(nod.Key, tvwChild, nod.Key & "_" & cSubProduct2.SubProduct.Fields("ª«®Æ½s½X").Value, cSubProduct2.SubProduct.Fields("ª«®Æ¦WºÙ").Value)
nod2.Tag = cSubProduct2.SubProduct.Fields("ª«®Æ½s½X").Value
cSubProduct2.SubProduct.MoveNext
Wend
.SubProduct.MoveNext
Wend
End With
Set cSubProduct = Nothing
End Sub
Private Sub DoQuery(ByVal strProductID As String)
Dim strPID As String
Dim nod As Node
strPID = strProductID
tvwBom.Nodes.Clear
Set nod = tvwBom.Nodes.Add(, tvwNext, "B_" & strPID, strPID)
nod.Tag = strPID
'½Õ¥Î¸`ÂI¥[¸ü¤lµ{§Ç
DoLoadNode nod
End Sub
Private Sub btnQuery_Click()
DoQuery txtProductID.Text
End Sub
Private Sub Form_Load()
'³s±µ¦r²Å¦ê¡An®Ú¾Ú¹ê»Ú¶}µoÀô¹Ò§@¬ÛÀ³×§ï
m_strCnn = "Provider=SQLOLEDB.1;" & _
"Persist Security Info=False;" & _
"User ID=sa;" & _
"Initial Catalog=BOM;" & _
"Data Source=(local)"
End Sub
Private Sub tvwBom_Expand(ByVal Node As MSComctlLib.Node)
'®i¶}¸`ÂI®É¥[¸ü¤l¼h
DoLoadNode Node
End Sub
Private Sub tvwBom_NodeClick(ByVal Node As MSComctlLib.Node)
'³æÀ»¸`ÂI®É¥[¸ü¤l¼h
DoLoadNode Node
End Sub
3.3.2 ÃþclsSubProduct
3.3.2.1 ¤å¥ó¦W¡GclsSubProduct.cls
3.3.2.2 ¥N½X¡G
Option Explicit
Private m_subProduct As ADODB.Recordset
Private m_ConnectionString As String
Public Property Get ConnectionString() As String
ConnectionString = m_ConnectionString
End Property
Public Property Let ConnectionString(ByVal strValue As String)
m_ConnectionString = strValue
End Property
Public Property Get SubProduct() As ADODB.Recordset
Set SubProduct = m_subProduct
End Property
Private Sub Class_Initialize()
Set m_subProduct = New ADODB.Recordset
End Sub
Public Sub DoQuery(ByVal strProductID As String)
Dim strPID As String
strPID = strProductID
With m_subProduct
.ActiveConnection = m_ConnectionString
.CursorLocation = adUseClient
.CursorType = adOpenStatic
.LockType = adLockReadOnly
.Open "SELECT ª«®Æ½s½X,(SELECT ª«®Æ¦WºÙ FROM ª«®ÆÀÉ®× WHERE ª«®ÆÀÉ®×.ª«®Æ½s½X = ª«®Æ²M³æ.ª«®Æ½s½X) AS ª«®Æ¦WºÙ FROM ª«®Æ²M³æ WHERE ¤W¯Å½s½X = '" & strPID & "'"
End With
End Sub
Private Sub Class_Terminate()
Set m_subProduct = Nothing
End Sub |
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