vb读取数据库问题
表结构序号 姓名 成绩
1 张三 80
2 李四 90
3 王五 85
在vb窗体中循环以上表,循环出姓名,然后点击姓名,自动创建一个窗体,窗体内显示成绩,
请各位高手帮忙 --------------------编程问答-------------------- 建议多看点数据库的例子 --------------------编程问答-------------------- --------------------编程问答-------------------- 用表格控件显示数据
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Private Sub Form_Load()
cn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\数据库名.mdb;Persist Security Info=False"
rs.Open "select * from 表名", cn, adOpenKeyset, adLockOptimistic
Set MSHFlexGrid1.DataSource = rs
rs.Close
cn.Close
End Sub --------------------编程问答-------------------- 建议借本相关教材,做做上面的例子就会明朗很多了。
--------------------编程问答--------------------
'窗体上放一个 Visible 属性 = False 的 ListBox, 两个 Lable 和 一个 Timer:
Private Sub Form_Load()
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset
cn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\数据库名.mdb;Persist Security Info=False"
Set rs = cn.Execute("Select 姓名, 成绩 From 表")
Do Until rs.EOF
List1.AddItem rs!姓名
List1.ItemData(List1.NewIndex) = rs!成绩
Loop
Set rs = Nothing
cn.Close
Set cn = Nothing
If List1.ListCount Then
List1.ListIndex = 0
Label1 = List1.List(List1.ListIndex)
End If
Label1.AutoSize = True
Label1.Font.Size = 48
Label2.AutoSize = True
Label2.Font.Size = 72
Label2.Font.Name = "Arial"
Label2.Visible = False
Timer1.Interval = 800
Timer1.Enabled = True
End Sub
Private Sub Label1_Click()
Label2 = List1.ItemData(List1.ListIndex)
Label2.Visible = True
Label2.ForeColor = IIf(Label2 >= "85", vbRed, vbBlack)
Timer1.Enabled = False
Timer1.Interval = 3000
Timer1.Enabled = True
End Sub
Private Sub Timer1_Timer()
If Timer1.Interval > 800 Then
Label2.Visible = False
Timer1.Enabled = False
Timer1.Interval = 800
Timer1.Enabled = True
End If
If List1.ListIndex < List1.ListCount - 1 Then
List1.ListIndex = List1.ListIndex + 1
Else
List1.ListIndex = 0
End If
Label1 = List1.List(List1.ListIndex)
End Sub
--------------------编程问答--------------------
严重支持 --------------------编程问答-------------------- dim newtable as dao.tabledef
dim mydb as dao.database
for each newtable in mydb.tabledef
'做你想做的
next
mydb.close --------------------编程问答-------------------- --------------------编程问答-------------------- 这是一个典型的数据form,vb中可用数据导航器直接生成这样的窗体和代码 --------------------编程问答-------------------- for each in forms
...
补充:VB , 数据库(包含打印,安装,报表)