图书管理系统ER图-流程图-功能结构图-源代码 第13页
DataGrid1.AllowDelete = False '不可删除
DataGrid1.AllowUpdate = False
If userpow = "guest" Then '权限相关
Frame2.Enabled = False
End If
Set DataGrid1.DataSource = rs_reader
Exit Sub
loaderror:
MsgBox Err.Description
End Sub
5、文件名 frmaddbookinfo（frmaddbookinfo.frm）
功能说明：添加图书信息，包括图书编号、书名、出版日期、入库日期、作者等信息。
源代码：
Option Explicit
Private Sub Command1_Click()
Dim rs_addbook As New ADODB.Recordset
Dim sql As String
If Trim(Combo1.Text) = "" Then
MsgBox "请选择图书种类", vbOKOnly + vbExclamation, ""
Combo1.SetFocus
Exit Sub
End If
If Trim(Text1.Text) = "" Then
MsgBox "图书编号不能为空", vbOKOnly + vbExclamation, ""
Text1.SetFocus
Exit Sub
End If
If Trim(Text2.Text) = "" Then
MsgBox "书名不能为空", vbOKOnly + vbExclamation, ""
Text2.SetFocus
Exit Sub
End If
If Not IsDate(Text5.Text) Then
MsgBox "请按照yyyy-mm-dd格式输入日期", vbOKOnly + vbExclamation, ""
Text5.SetFocus
Exit Sub
End If
If Not IsDate(Text6.Text) Then
MsgBox "请按照yyyy-mm-dd格式输入日期", vbOKOnly + vbExclamation, ""
Text6.SetFocus
Exit Sub
End If
sql = "select * from 书籍信息 where 书籍编号='" & Text1.Text & "'"
rs_addbook.Open sql, conn, adOpenKeyset, adLockPessimistic
If rs_addbook.EOF Then
rs_addbook.AddNew
rs_addbook.Fields(0) = Trim(Text1.Text)
rs_addbook.Fields(1) = Trim(Text2.Text)
rs_addbook.Fields(2) = Trim(Combo1.Text)
rs_addbook.Fields(3) = Trim(Text3.Text)
rs_addbook.Fields(4) = Trim(Text4.Text)
rs_addbook.Fields(5) = Trim(Text5.Text)
rs_addbook.Fields(6) = Trim(Text6.Text)
rs_addbook.Fields(7) = "否"
rs_addbook.Update
MsgBox "添加书籍信息成功！", vbOKOnly, ""
rs_addbook.Close
Else
MsgBox "图书编号重复！", vbOKOnly + vbExclamation, ""
Text1.SetFocus
Text1.Text = ""
rs_addbook.Close
Exit Sub
Private Sub Form_Load()
Dim rs_leibie As New ADODB.Recordset
Dim sql As String
sql = "select * from 图书类别"
rs_leibie.Open sql, conn, adOpenKeyset, adLockPessimistic
rs_leibie.MoveFirst
Do While Not rs_leibie.EOF
Combo1.AddItem rs_leibie.Fields(0)
rs_leibie.MoveNext
rs_leibie.Close
End Sub
Private Sub Frame1_DragDrop(Source As Control, X As Single, Y As Single)
End Sub
6、文件名 frmfindbook（form）
功能说明：查询图书信息，可以选择性的输入图书的编号、名称或者类别查询图书的详细信息。
源代码：
Option Explicit
Dim panduan As String
Private Sub Command1_Click()
Dim rs_findbook As New ADODB.Recordset
Dim sql As String
If Check1.Value = vbChecked Then
sql = "书名='" & Trim(Text1.Text & " ") & "'"
End If
If Check2.Value = vbChecked Then
If Trim(sql) = "" Then
sql = "类别='" & Trim(Combo1.Text & " ") & "'"
Else
sql = sql & "and 书名='" & Trim(Combo1.Text & " ") & "'"
End If
End If
If Check3.Value = vbChecked Then
If Trim(sql) = "" Then
sql = "作者='" & Trim(Text2.Text & " ") & "'"
Else
sql = sql & "and 作者='" & Trim(Text2.Text & " ") & "'"
End If
End If
If Check4.Value = vbChecked Then
If Trim(sql) = "" Then
sql = "出版社='" & Trim(Text3.Text & " ") & "'"
Else
sql = sql & "and 出版社='" & Trim(Text3.Text & " ") & "'"
End If
End If
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