login.aspx.vb

数据库学习的绝好例子简单的数据库经典入门

Imports System.Data

Partial Class Login
    Inherits System.Web.UI.Page

    'Public variables
    Public strErrorMessage As String = String.Empty

    Protected Sub btnSubmit_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles btnSubmit.Click

        'Initialize a new instance of the business logic component
        Using objUsers As New WroxBusinessLogic.WBLUsers( _
            "Wrox", "Time Tracker Oracle")

            'Validate the user and get their role
            Using objDataSet As DataSet = objUsers.ValidateLogin( _
                txtLoginName.Text, txtPassword.Text)

                If objDataSet.Tables("User").Rows.Count > 0 Then
                    If objDataSet.Tables("User").Rows(0).Item("Status") Then
                        Response.Redirect("TimeSheet.aspx?UserID=" & _
                        objDataSet.Tables("User").Rows(0).Item( _
                        "UserID").ToString & "&UserName=" & _
                        objDataSet.Tables("User").Rows(0).Item( _
                        "UserName").ToString)
                    Else
                        strErrorMessage = "Your account has been suspended." & _
                         ControlChars.CrLf & "Please contact your administrator."
                    End If
                Else
                    strErrorMessage = "Your credentials were not validated."
                End If

            End Using

        End Using
    End Sub
End Class