t_lab_infor.aspx.vb

教务实验课选课系统

Public Class t_lab_infor
    Inherits System.Web.UI.Page

#Region " Web 窗体设计器生成的代码 "

    '该调用是 Web 窗体设计器所必需的。
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

    End Sub
    Protected WithEvents Label1 As System.Web.UI.WebControls.Label
    Protected WithEvents Button1 As System.Web.UI.WebControls.Button
    Protected WithEvents DropDownList1 As System.Web.UI.WebControls.DropDownList
    Protected WithEvents Button3 As System.Web.UI.WebControls.Button
    Protected WithEvents TextBox1 As System.Web.UI.WebControls.TextBox
    Protected WithEvents HyperLink1 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink2 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents LinkButton1 As System.Web.UI.WebControls.LinkButton
    Protected WithEvents Image1 As System.Web.UI.WebControls.Image
    Protected WithEvents spWelMessage As System.Web.UI.HtmlControls.HtmlGenericControl

    '注意: 以下占位符声明是 Web 窗体设计器所必需的。
    '不要删除或移动它。
    Private designerPlaceholderDeclaration As System.Object

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
        'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
        '不要使用代码编辑器修改它。
        InitializeComponent()
    End Sub

#End Region

    Dim dsn As String
    Dim conn As New SqlClient.SqlConnection
    Dim cmd As New SqlClient.SqlCommand
    Dim mydap1 As New SqlClient.SqlDataAdapter
    Dim ds1 As DataSet = New DataSet
    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        '在此处放置初始化页的用户代码
        Dim teacher_id As String = Request.Cookies("userInf").Values("userID")
        If DateTime.Now.Hour >= 6 And DateTime.Now.Hour < 12 Then
            spWelMessage.InnerHtml = "早上好，" & Request.Cookies("userInf").Values("userID") & Request.Cookies("userInf").Values("userIdent")
        ElseIf DateTime.Now.Hour >= 12 And DateTime.Now.Hour < 18 Then
            spWelMessage.InnerHtml = "下午好，" & Request.Cookies("userInf").Values("userID") & Request.Cookies("userInf").Values("userIdent")
        Else
            spWelMessage.InnerHtml = "晚上好，" & Request.Cookies("userInf").Values("userID") & Request.Cookies("userInf").Values("userIdent")
        End If
        '数据控件连接信息
        dsn = ConfigurationSettings.AppSettings("DSN_teacher")
        conn.ConnectionString = dsn
        cmd.Connection = conn
        mydap1.SelectCommand = cmd
        If Not IsPostBack Then
            '绑定dropdownlist1的内容，为实验序号lab_infor表中的lab_id内容
            Dim bool1 As Boolean = False
            cmd.CommandText = "SELECT lab_id FROM lab_infor"
            Try
                conn.Open()
                DropDownList1.DataSource = cmd.ExecuteReader
                DropDownList1.DataTextField = "lab_id"
                DropDownList1.DataBind()
                bool1 = True
            Catch
                Label1.Text = "读取实验信息表失败，可能是服务器出现错误，请稍后再试！非常抱歉影响了您的工作！"
            Finally
                conn.Close()
            End Try
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        '选择dropdownlist1的实验序号，查询某个实验的实验信息
        Dim bool2 As Boolean = False
        cmd.CommandText = "SELECT lab_memo FROM lab_infor where lab_id='" + DropDownList1.SelectedItem.Text + "'"
        Try
            conn.Open()
            mydap1.Fill(ds1, "lab_infor_lab_memo")
            bool2 = True
        Catch
            Label1.Text = "读取实验信息表失败，可能是服务器出现错误，请稍后再试！非常抱歉影响了您的工作！"
        Finally
            conn.Close()
        End Try
        If bool2 Then
            Dim mytable2 As New DataTable
            mytable2 = ds1.Tables("lab_infor_lab_memo")
            TextBox1.Text = mytable2.Rows(0)("lab_memo")
        End If
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        '提交修改信息
        cmd.CommandText = "update lab_infor set lab_memo='" + TextBox1.Text + "'where lab_id='" + DropDownList1.SelectedItem.Text + "'"
        Try
            conn.Open()
            cmd.ExecuteReader()
            Label1.Text = "修改成功！"
        Catch
            Label1.Text = "读取实验信息表失败，可能是服务器出现错误，请稍后再试！非常抱歉影响了您的工作！"
        Finally
            conn.Close()
        End Try
    End Sub

    Private Sub LinkButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LinkButton1.Click
        Response.Redirect("../login.aspx")
    End Sub
End Class