VB+SQL server学生信息管理系统毕业论文附源代码 第22页
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.......................... frmModifyclassinfo 修改班级信息窗口代码 ...............................
Dim mrc As ADODB.Recordset
Dim myBookmark As Variant
Dim mcclean As Boolean
Private Sub cancelCommand_Click()
If Not mcclean Then
Frame2.Enabled = True
firstCommand.Enabled = True
previousCommand.Enabled = True
nextCommand.Enabled = True
lastCommand.Enabled = True
txtClassno.Enabled = False
comboGrade.Enabled = False
txtDirector.Enabled = False
txtClassroom.Enabled = False
mrc.Bookmark = myBookmark
Call viewData
Else
MsgBox "什么都没有修改,有什么好取消的!", vbOKOnly + vbExclamation, "警告"
End If
End Sub
Private Sub deleteCommand_Click()
myBookmark = mrc.Bookmark
str2$ = MsgBox("是否删除当前记录?", vbOKCancel, "删除当前记录")
If str2$ = vbOK Then
mrc.MoveNext
If mrc.EOF Then
mrc.MoveFirst
myBookmark = mrc.Bookmark
mrc.MoveLast
mrc.Delete
mrc.Bookmark = myBookmark
Call viewData
Else
myBookmark = mrc.Bookmark
mrc.MovePrevious
mrc.Delete
mrc.Bookmark = myBookmark
Call viewData
End If
Else
mrc.Bookmark = myBookmark
Call viewData
End If
End Sub
Private Sub editCommand_Click()
mcclean = False
Frame2.Enabled = False
firstCommand.Enabled = False
previousCommand.Enabled = False
nextCommand.Enabled = False
lastCommand.Enabled = False
txtClassno.Enabled = True
comboGrade.Enabled = True
txtDirector.Enabled = True
txtClassroom.Enabled = True
comboGrade.AddItem "初中一年级"
comboGrade.AddItem "初中二年级"
comboGrade.AddItem "初中三年级"
comboGrade.AddItem "高中一年级"
comboGrade.AddItem "高中二年级"
comboGrade.AddItem "高中三年级"
myBookmark = mrc.Bookmark
End Sub
Private Sub firstCommand_Click()
mrc.MoveFirst
Call viewData
End Sub
Private Sub Form_Load()
Dim txtSQL As String
Dim MsgText As String
txtClassno.Enabled = False
comboGrade.Enabled = False
txtDirector.Enabled = False
txtClassroom.Enabled = False
txtSQL = "select * from class_Info "
Set mrc = ExecuteSQL(txtSQL, MsgText)
mrc.MoveFirst
Call viewData
myBookmark = mrc.Bookmark
mcclean = True
End Sub
Public Sub viewData()
txtClassno.Text = mrc.Fields(0)
comboGrade.Text = mrc.Fields(1)
txtDirector.Text = mrc.Fields(2)
txtClassroom.Text = mrc.Fields(3)
End Sub
Private Sub lastCommand_Click()
mrc.MoveLast
Call viewData
End Sub
Private Sub nextCommand_Click()
mrc.MoveNext
If mrc.EOF Then
mrc.MoveFirst
End If
Call viewData
End Sub
Private Sub previousCommand_Click()
mrc.MovePrevious
If mrc.BOF Then
mrc.MoveLast
End If
Call viewData
End Sub
Private Sub updateCommand_Click()
Dim txtSQL As String
Dim MsgText As String
Dim mrcc As ADODB.Recordset
If mcclean Then
MsgBox "请先修改班级信息", vbOKOnly + vbExclamation, "警告"
Exit Sub
End If
If Not Testtxt(txtClassno.Text) Then
MsgBox "请输入班号!", vbOKOnly + vbExclamation, "警告"
txtClassno.SetFocus
Exit Sub
End If
If Not IsNumeric(Trim(txtClassno.Text)) Then
MsgBox "请输入数字!", vbOKOnly + vbExclamation, "警告"
Exit Sub
txtClassno.SetFocus
End If
If Not Testtxt(comboGrade.Text) Then
MsgBox "请选择年级!", vbOKOnly + vbExclamation, "警告"
comboGrade.SetFocus
Exit Sub
End If
If Not Testtxt(txtDirector.Text) Then
MsgBox "请输入班主任姓名!", vbOKOnly + vbExclamation, "警告"
txtDirector.SetFocus
Exit Sub
End If
If Not Testtxt(txtClassroom.Text) Then
MsgBox "请输入教室号码!", vbOKOnly + vbExclamation, "警告"
txtClassroom.SetFocus
Exit Sub
End If
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