1.首先我们得做一个窗体,其布局和运行效果如下
2.我们要理清思路,首先窗体在运行时就应该将部门加载进去,并且将重复的部门剔除掉
Private Sub UserForm_Initialize()
Set con = New ADODB.Connection
With con
.Provider = "microsoft.ace.oledb.12.0"
.ConnectionString = "data source=" & ThisWorkbook.Path & "\学生管理.accdb"
.Open
End With
'提取
Dim sql As String
sql = "select distinct 部门 from 员工"
Set rs = New ADODB.Recordset
rs.Open sql, con, adOpenKeyset, adLockOptimistic '产生记录集
Dim i As Integer
'将记录集中的部门名称显示到listbox1 列表框中
With ListBox1
.Clear
For i = 1 To rs.RecordCount
.AddItem rs("部门")
rs.MoveNext '将记录集中的指针指向下一条记录
Next i
End With
rs.Close
End Sub
3.我们要实现的是在选择部门中选择部门后,将这个部门的员工编号,姓名显示在选择员工的列表框中
'单击列表框,查询员工信息
Private Sub ListBox1_Click()
Dim sql As String
sql = "select 编号,姓名 from 员工 where 部门='" & ListBox1.Value & " 'order by 编号"
rs.Open sql, con, adOpenKeyset, adLockOptimistic '产生记录集
Dim i As Integer
With ListBox2
.Clear
For i = 1 To rs.RecordCount
.AddItem rs("编号") & Space(2) & rs("姓名")
rs.MoveNext '将记录集中的指针指向下一条记录
Next i
End With
rs.Close
End Sub
4.将选择员工后,把员工的对应信息显示在对应的文本框中,便可以实现查询功能
'单击列表框,将对应的信息显示在对应的文本框中
Private Sub ListBox2_Click()
Dim sql As String
sql = "select * from 员工 where 编号='" & Left(ListBox2.Value, 6) & "'"
rs.Open sql, con, adOpenKeyset, adLockOptimistic
Dim arr, i As Integer
arr = Array("TextBox1", "TextBox2", "TextBox3", "TextBox4", "TextBox5", "TextBox6", "TextBox7", "TextBox8", "TextBox9", "TextBox10")
For i = 0 To 7
Me.Controls(arr(i)).Value = rs.Fields(i)
Next i
rs.Close
End Sub
5.完整代码及解释如下
Option Explicit
Dim con As ADODB.Connection
Dim rs As ADODB.Recordset
'关闭数据库连接,关闭窗体,释放变量空间
Private Sub CommandButton1_Click()
con.Close
Set rs = Nothing
Set con = Nothing
Unload Me
End Sub
'单击列表框,查询员工信息
Private Sub ListBox1_Click()
Dim sql As String
sql = "select 编号,姓名 from 员工 where 部门='" & ListBox1.Value & " 'order by 编号"
rs.Open sql, con, adOpenKeyset, adLockOptimistic '产生记录集
Dim i As Integer
With ListBox2
.Clear
For i = 1 To rs.RecordCount
.AddItem rs("编号") & Space(2) & rs("姓名")
rs.MoveNext '将记录集中的指针指向下一条记录
Next i
End With
rs.Close
End Sub
'单击列表框,将对应的信息显示在对应的文本框中
Private Sub ListBox2_Click()
Dim sql As String
sql = "select * from 员工 where 编号='" & Left(ListBox2.Value, 6) & "'"
rs.Open sql, con, adOpenKeyset, adLockOptimistic
Dim arr, i As Integer
arr = Array("TextBox1", "TextBox2", "TextBox3", "TextBox4", "TextBox5", "TextBox6", "TextBox7", "TextBox8", "TextBox9", "TextBox10")
For i = 0 To 7
Me.Controls(arr(i)).Value = rs.Fields(i)
Next i
rs.Close
End Sub
Private Sub UserForm_Initialize()
Set con = New ADODB.Connection
With con
.Provider = "microsoft.ace.oledb.12.0"
.ConnectionString = "data source=" & ThisWorkbook.Path & "\学生管理.accdb"
.Open
End With
'提取
Dim sql As String
sql = "select distinct 部门 from 员工"
Set rs = New ADODB.Recordset
rs.Open sql, con, adOpenKeyset, adLockOptimistic '产生记录集
Dim i As Integer
'将记录集中的部门名称显示到listbox1 列表框中
With ListBox1
.Clear
For i = 1 To rs.RecordCount
.AddItem rs("部门")
rs.MoveNext '将记录集中的指针指向下一条记录
Next i
End With
rs.Close
End Sub