Visual Basic 数据整理示例

' This application makes use of Microsoft Hierarchical FlexGrid  
' Control, which is named as MSHFLexGrid.  
Const SHAPER = "MSDataShape"  
Const DP = "SQLOLEDB"  
Const DS = "MySQLServer"  
Const DB = "Northwind"  
  
Private Sub Form_Load()  
    FirstExample  
End Sub  
  
Private Sub Form_Resize()  
    MSHFlexGrid.Top = 0  
    MSHFlexGrid.Left = 0  
    MSHFlexGrid.Width = Me.ScaleWidth  
    MSHFlexGrid.Height = Me.ScaleHeight  
End Sub  
  
Private Sub FirstExample()  
    Dim con As ADODB.Connection  
    Dim rst As ADODB.Recordset  
    Dim sCmd As String  
  
    Set con = New ADODB.Connection  
    Set rst = New ADODB.Recordset  
  
    con.ConnectionString = ConnectionString(SHAPER, DP, DS, DB)  
    con.Open  
  
    sCmd = "SHAPE {SELECT CustomerID, ContactName FROM Customers} " _  
        & "APPEND ({SELECT OrderID, OrderDate, CustomerID FROM Orders} " _  
        & "AS chapOrders " _  
        & "RELATE customerID TO customerID)"  
  
    rst.Open sCmd, con, adOpenStatic, 2  
    Set MSHFlexGrid.Recordset = rst  
  
    rst.Close  
    Set rst = Nothing  
  
    con.Close  
    Set con = Nothing  
  
End Sub  
  
Private Function ConnectionString(pr As String, _  
                                  dpr As String, _  
                                  dsr As String, _  
                                  dbs As String)  
    Dim s As String  
    If pr = "" Then  
        s = "Provider=" & dpr & _  
          ";Data Source=" & dsr & _  
          ";Initial Catalog=" & dbs & _  
          ";Integrated Security=SSPI;"  
    Else  
        s = "Provider=" & pr & _  
          ";Data Provider=" & dpr & _  
          ";Data Source=" & dsr & _  
          ";Initial Catalog=" & dbs & _  
          ";Integrated Security=SSPI;"  
    End If  
    ConnectionString = s  
End Function  
  

尝试一下！

1. 创建 Visual Basic Standard EXE 应用程序项目

2. 从 Visual Studio 中的“项目”菜单中选择“组件”

3. 从“组件”弹出窗口中选择“Microsoft Hierarchical FlexGrid 控件 6.0 (OLEDB)”，然后单击“保存”。

4. 在 Visual Basic 工作区的工具箱窗格中双击 FlexGrid 控件。 将此实例的名称更改为 MSHFLEXGRID。

5. 复制前面的代码并将其粘贴到“代码”页面以替换任何现有代码。

6. 从“运行”菜单中选择“开始”以执行应用程序。