ACCESS数据库导入的数据不能使用
从EXCEL导入到ACCESS中的数据，在程序中点开就报错，运行时错误‘94’使用Null无效但是表里面的值都是有的啊。求各位大神帮忙解决一下！真心的不懂。是在哪个地方判断数据是空值的？
Option Explicit
Dim Flag As Integer
Private Sub ShowRecord()
Dim i As Integer, j As Integer
Adodc2.Refresh
With MSHFlexGrid1
.Rows = 1
If Adodc2.Recordset.RecordCount > 0 Then Adodc2.Recordset.MoveFirst
For i = 1 To Adodc2.Recordset.RecordCount
If i + 1 > .Rows Then .Rows = .Rows + 1
.TextMatrix(i, 0) = i
.Row = i
.Col = 1
.CellPictureAlignment = flexPicAlignCenterCenter
.CellChecked = flexUnchecked
For j = 0 To Adodc2.Recordset.Fields.Count - 2
.TextMatrix(i, j + 2) = Trim(Adodc2.Recordset.Fields(j))
Next j
Adodc2.Recordset.MoveNext
Next i
End With
End Sub
Private Sub asPopup1_Click(Index As Integer, Cancel As Boolean)
Dim ReaderNum As String, i As Integer, a As Integer
Select Case Index
Case 0
Form20.Left = (Me.Width - Form20.Width) / 2
Form20.Top = (Me.Height - Form20.Height) / 2
Form20.Caption = "添加读者信息"
Form20.Text1(5).Text = Date
Form20.Show 1
Case 1
Form20.Left = (Me.Width - Form20.Width) / 2
Form20.Top = (Me.Height - Form20.Height) / 2
Form20.Caption = "修改读者信息"
ReaderNum = Trim(MSHFlexGrid1.TextMatrix(MSHFlexGrid1.Row, 2))
Form20.Adodc2.ConnectionString = Form1.Adodc1.ConnectionString
Form20.Adodc2.RecordSource = "select * from reader where 读者编号 = '" & ReaderNum & "'"
Form20.Adodc2.Refresh
If Form20.Adodc2.Recordset.RecordCount > 0 Then
For i = 0 To 1
Form20.Text1(i).Text = Trim(Form20.Adodc2.Recordset.Fields(i))
Next i
For i = 2 To 3
(i).Text = Trim(Form20.Adodc2.Recordset.Fields(i))
Next i
For i = 4 To 5
Form20.Text1(i).Text = Trim(Form20.Adodc2.Recordset.Fields(i))
Next i
For i = 8 To 10
Form20.Text1(i).Text = Trim(Form20.Adodc2.Recordset.Fields(i))
Next i
Form20.Image1.Picture = LoadPicture(App.Path & "\database\读者照片\" & Trim(Form20.Adodc2.Recordset.Fields("读者照片")))
End If
Form20.Show 1
Case 2
a = MsgBox("确定要删除该读者记录吗？", vbOKCancel Or vbQuestion, "删除提示")
If a = vbOK Then
ReaderNum = Trim(MSHFlexGrid1.TextMatrix(MSHFlexGrid1.Row, 2))
Form20.Adodc2.ConnectionString = Form1.Adodc1.ConnectionString
Form20.Adodc2.RecordSource = "select * from reader where 读者编号 = '" & ReaderNum & "'"
Form20.Adodc2.Refresh
Form20.Adodc2.Recordset.Delete
ShowRecord
End If
Case 3
a = MsgBox("确定要删除选中的读者记录吗？", vbOKCancel Or vbQuestion, "删除提示")
If a = vbOK Then
With MSHFlexGrid1
For i = 1 To .Rows - 1
.Row = i
.Col = 1
If .CellChecked = flexChecked Then
ReaderNum = Trim(MSHFlexGrid1.TextMatrix(MSHFlexGrid1.Row, 2))
Form20.Adodc2.ConnectionString = Form1.Adodc1.ConnectionString
Form20.Adodc2.RecordSource = "select * from reader where 读者编号 = '" & ReaderNum & "'"
Form20.Adodc2.Refresh
Form20.Adodc2.Recordset.Delete
End If
Next i
End With
ShowRecord
End If
Case 4
PopupMenu SelectButton, , asPopup1(4).Left, asPopup1(4).Top + asPopup1(4).Height + 10
Case 5
Adodc2.RecordSource = "select * from reader where 截止日期 <='" & CStr(Date) & "'"
Adodc2.Refresh
ShowRecord
Case 6
Adodc2.RecordSource = "select * from reader"
Adodc2.Refresh
ShowRecord
Case 7
Unload Me
End Select
End Sub
Private Sub Command1_Click()
If Text1.Text = "" Then
MsgBox "查询条件不能为空", vbOKOnly Or vbInformation, "提示信息"
Text1.SetFocus
Else
Select Case Flag
Case 0
If Check1.Value = 1 Then
Adodc2.RecordSource = "select * from reader where 读者编号 like '%" & Trim(Text1.Text) & "%'"
Else
Adodc2.RecordSource = "select * from reader where 读者编号 = '" & Trim(Text1.Text) & "'"
End If
Case 1
If Check1.Value = 1 Then
Adodc2.RecordSource = "select * from reader where 读者姓名 like '%" & Trim(Text1.Text) & "%'"
Else
Adodc2.RecordSource = "select * from reader where 读者姓名 = '" & Trim(Text1.Text) & "'"
End If
End Select
Adodc2.Refresh
ShowRecord
End If
End Sub
Private Sub Form_Load()
Dim Key As String, Text As String
Dim i As Integer
Adodc1.ConnectionString = Form1.Adodc1.ConnectionString
Adodc1.RecordSource = "select * from readertype"
Adodc1.Refresh
Set DataGrid1.DataSource = Adodc1
TreeView1.ImageList = ImageList1
Key = "全部类型"
Text = "全部类型"
TreeView1.Nodes.Add , , Key, Text, 1
If Adodc1.Recordset.RecordCount > 0 Then
Adodc1.Recordset.MoveFirst
While Not Adodc1.Recordset.EOF
Key = Trim(Adodc1.Recordset.Fields("读者类型名称"))
Text = Key
TreeView1.Nodes.Add , , Key, Text, 1
Adodc1.Recordset.MoveNext
Wend
End If
Option1(0).Value = True
Flag = 0
Check1.Value = 1
MSHFlexGrid1.BackColorFixed = 15983050
MSHFlexGrid2.BackColorFixed = 15983050
Adodc2.ConnectionString = Adodc1.ConnectionString
Adodc2.RecordSource = "select * from reader"
Adodc2.Refresh
With MSHFlexGrid1
.FormatString = "序号|选中 "
For i = 0 To Adodc2.Recordset.Fields.Count - 2
.FormatString = .FormatString & "|" & Trim(Adodc2.Recordset.Fields(i).Name)
Next i
For i = 2 To 11
.ColWidth(i) = 1200
.ColAlignment(i) = flexAlignCenterCenter
Next i
.ColWidth(9) = 1600
.ColWidth(10) = 3000
.ColWidth(11) = 5000
ShowRecord
End With
End Sub
Private Sub MSHFlexGrid1_Click()
If MSHFlexGrid1.Col = 1 Then
If MSHFlexGrid1.CellChecked = flexChecked Then
MSHFlexGrid1.CellChecked = flexUnchecked
ElseIf MSHFlexGrid1.CellChecked = flexUnchecked Then
MSHFlexGrid1.CellChecked = flexChecked
End If
End If
End Sub
Private Sub OnlyViewSelect_Click()
Dim i As Integer
With MSHFlexGrid1
For i = 1 To .Rows - 1
If i + 1 > .Rows Then Exit For
.Row = i
.Col = 1
If .CellChecked = flexUnchecked Then
.RemoveItem i
i = i - 1
End If
Next i
End With
End Sub
Private Sub Option1_Click(Index As Integer)
Flag = Index
End Sub
Private Sub RemoveSelect_Click()
Dim i As Integer
With MSHFlexGrid1
For i = 1 To .Rows - 1
.Row = i
.Col = 1
If .CellChecked = flexChecked Then
.CellChecked = flexUnchecked
End If
Next i
End With
End Sub
Private Sub SelectAll_Click()
Dim i As Integer
With MSHFlexGrid1
For i = 1 To .Rows - 1
.Row = i
.Col = 1
.CellChecked = flexChecked
Next
End With
End Sub
Private Sub SelectContrary_Click()
Dim i As Integer
With MSHFlexGrid1
For i = 1 To .Rows - 1
.Row = i
.Col = 1
If .CellChecked = flexChecked Then
.CellChecked = flexUnchecked
ElseIf .CellChecked = flexUnchecked Then
.CellChecked = flexChecked
End If
Next i
End With
End Sub
Private Sub TreeView1_DblClick()
Dim Text As String
Text = Trim(Nod.Text)
If Text = "全部类型" Then
Adodc2.RecordSource = "select * from reader"
Adodc2.Refresh
Else
Adodc2.RecordSource = "select * from reader where 读者类型 = '" & Text & "'"
Adodc2.Refresh
End If
ShowRecord
End Sub
Private Sub TreeView1_NodeClick(ByVal Node As MSComctlLib.Node)
Set Nod = Node
End Sub
[ 本帖最后由 yang3396789 于 2013-4-23 21:06 编辑 ]
