内容提要：Macromedia官方将在其他软件中内建Fireworks技术称为Fireworks技术，网上也称之为内建图片编辑器。Dreamweaver MX 2004给人的一个感觉就是与Macromedia公司其它产品的全面无缝集成，这样就大大缩短了开发人员的开发周 …… |
Hotelada1 = New OleDbDataAdapter(Hotelstring, conn)
HotelDataSet1 = New System.Data.DataSet
Hotelada1.Fill(HotelDataSet1, "tbUser")
Hoteldt1 = HotelDataSet1.Tables("tbUser")
If Hoteldt1.Rows.Count > 0 Then
strName = Hoteldt1.Rows(0)("UserId")
Else
If (Trim(UserID.Text) <> Nothing) And (Trim(UserPass.Text) <> Nothing) _
And (Trim(UserName.Text) <> Nothing) And (Trim(UserEmail.Text) <> Nothing) _
And (Trim(UserTel.Text) <> Nothing) Then
Hotelstring = "Select * from tbUser"
Hotelada2 = New OleDbDataAdapter(Hotelstring, conn)
yy = New OleDbCommandBuilder(Hotelada2)
HotelDataSet2 = New System.Data.DataSet
Hotelada2.Fill(HotelDataSet2, "tbUser")
Hoteldt2 = HotelDataSet2.Tables("tbUser")
tbRow = Hoteldt2.NewRow
tbRow("UserId") = UserID.Text
tbRow("UserPass") = UserPass.Text
tbRow("UserName") = UserName.Text
tbRow("UserEmail") = UserEmail.Text
tbRow("UserTel") = UserTel.Text
Hoteldt2.Rows.Add(tbRow)
Hotelada2.Update(HotelDataSet2, "tbUser")
strName = UserID.Text
Else
Usercheck = False
Exit Function
End If
End If
Usercheck = True
End Function
（ 4 ）定义“ Roomcheck ”函数。该函数首先检测用户有没有选择预订客房类型，如果没有选择，则该函数返回“ False ”，接着在用户选择预订客房类型的情况下，检测所选择的客房类型在预订的时间段中是否已预订满，如果是，则返回“ False ”，否则将返回“ True ”，该函数的代码如下所述。
Function Roomcheck() As Boolean
Dim Hotelada1, Hotelada2 As OleDbDataAdapter
Dim HotelDataSet1, HotelDataSet2 As System.Data.DataSet
Dim Hoteldt1, Hoteldt2 As DataTable
Dim i, RoomI As Integer
If RoomRadio.SelectedItem.Value <> Nothing Then
Hotelstring = "Select * From UserOrder Where RoomID=" & RoomRadio.SelectedItem.Value
Hotelada1 = New OleDbDataAdapter(Hotelstring, conn)
HotelDataSet1 = New System.Data.DataSet
Hotelada1.Fill(HotelDataSet1, "UserOrder")
Hoteldt1 = HotelDataSet1.Tables("UserOrder")
Dim Date1, Date2 As Date
Date1 = StartTime.Text
Date2 = LastTime.Text
For i = 0 To Hoteldt1.Rows.Count - 1
Dim roomdate1, roomdate2 As Date
roomdate1 = Hoteldt1.Rows(i)("StartTime")
roomdate2 = Hoteldt1.Rows(i)("LastTime")
If (System.DateTime.