1. 设计数据库
使用Access数据库来存储零件交易中心的数据。创建以下几个主要表:
零件表 (Parts)
零件ID (PartID, 主键)
零件名称 (PartName)
库存数量 (Quantity)
单价 (Price)
销售表 (Sales)
销售ID (SaleID, 主键)
零件ID (PartID, 外键)
销售数量 (QuantitySold)
销售日期 (SaleDate)
采购表 (Purchases)
采购ID (PurchaseID, 主键)
零件ID (PartID, 外键)
采购数量 (QuantityPurchased)
采购日期 (PurchaseDate)
2. 设计VB6应用程序界面
创建以下几个主要的窗体(Forms)和控件:
零件管理窗体
TextBox: 零件ID, 零件名称, 库存数量, 单价
CommandButton: 添加零件, 更新零件, 删除零件, 查看库存
销售管理窗体
ComboBox: 选择零件
TextBox: 销售数量, 销售日期
CommandButton: 添加销售记录, 查看销售记录
采购管理窗体
ComboBox: 选择零件
TextBox: 采购数量, 采购日期
CommandButton: 添加采购记录, 查看采购记录
3. 编写VB6代码与Access数据库交互
通过ADO (ActiveX Data Objects) 来连接和操作Access数据库。
连接数据库
Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Private Sub ConnectDB()
conn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\path\to\your\database.accdb;"
conn.Open
End Sub
添加零件
Private Sub AddPart()
Dim sql As String
sql = "INSERT INTO Parts (PartID, PartName, Quantity, Price) VALUES ('" & TextPartID.Text & "', '" & TextPartName.Text & "', " & TextQuantity.Text & ", " & TextPrice.Text & ")"
conn.Execute sql
End Sub
更新零件
Private Sub UpdatePart()
Dim sql As String
sql = "UPDATE Parts SET PartName='" & TextPartName.Text & "', Quantity=" & TextQuantity.Text & ", Price=" & TextPrice.Text & " WHERE PartID='" & TextPartID.Text & "'"
conn.Execute sql
End Sub
删除零件
Private Sub DeletePart()
Dim sql As String
sql = "DELETE FROM Parts WHERE PartID='" & TextPartID.Text & "'"
conn.Execute sql
End Sub
添加销售记录
Private Sub AddSale()
Dim sql As String
sql = "INSERT INTO Sales (PartID, QuantitySold, SaleDate) VALUES ('" & ComboPartID.Text & "', " & TextQuantitySold.Text & ", #" & TextSaleDate.Text & "#)"
conn.Execute sql
' 更新库存数量
sql = "UPDATE Parts SET Quantity = Quantity - " & TextQuantitySold.Text & " WHERE PartID='" & ComboPartID.Text & "'"
conn.Execute sql
End Sub
添加采购记录
Private Sub AddPurchase()
Dim sql As String
sql = "INSERT INTO Purchases (PartID, QuantityPurchased, PurchaseDate) VALUES ('" & ComboPartID.Text & "', " & TextQuantityPurchased.Text & ", #" & TextPurchaseDate.Text & "#)"
conn.Execute sql
' 更新库存数量
sql = "UPDATE Parts SET Quantity = Quantity + " & TextQuantityPurchased.Text & " WHERE PartID='" & ComboPartID.Text & "'"
conn.Execute sql
End Sub