addcommentary.aspx.vb

来自「这是用ASP.NET和SQLserver编写的购物网站的程序」· VB 代码 · 共 110 行

Imports System.Data.SqlClient
Public Class addcommentary
    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 Label2 As System.Web.UI.WebControls.Label
    Protected WithEvents TextBox2 As System.Web.UI.WebControls.TextBox
    Protected WithEvents Label4 As System.Web.UI.WebControls.Label
    Protected WithEvents LinkButton1 As System.Web.UI.WebControls.LinkButton
    Protected WithEvents LinkButton As System.Web.UI.WebControls.LinkButton
    Protected WithEvents Label5 As System.Web.UI.WebControls.Label
    Protected WithEvents Label1 As System.Web.UI.WebControls.Label
    Protected WithEvents Label3 As System.Web.UI.WebControls.Label
    Protected WithEvents ImageButton1 As System.Web.UI.WebControls.ImageButton
    Protected WithEvents HyperLink6 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink5 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink4 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink3 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink1 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents HyperLink2 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents Hyperlink7 As System.Web.UI.WebControls.HyperLink
    Protected WithEvents Label6 As System.Web.UI.WebControls.Label
    Protected WithEvents Button1 As System.Web.UI.WebControls.Button
    Protected WithEvents Label7 As System.Web.UI.WebControls.Label
    Protected WithEvents Label8 As System.Web.UI.WebControls.Label

    '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

    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
        If Not Page.IsPostBack Then
            If Session("userpower") = 1 Then
                Label6.Text = "欢迎" & Session("username")
                Label6.Visible = True
                Button1.Visible = True

            Else
                Label6.Visible = False
                Button1.Visible = False
            End If
        End If
    End Sub



    Private Sub LinkButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LinkButton.Click
        Response.Redirect("commentary.aspx")
    End Sub

    Private Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LinkButton1.Click
        Dim strconnection As String
        strconnection = "data source=(local);initial catalog=ECDB;user id=sa;pwd=200343"
        Dim submitconnection As New SqlClient.SqlConnection
        submitconnection = New SqlClient.SqlConnection(strconnection)
        Dim submitsentence As String
        Dim usernamevalue As String
        Dim rowsum As Integer
        Dim showsentence As String
        Dim showdataadapter As SqlClient.SqlDataAdapter
        showsentence = "select * from commentary"
        showdataadapter = New SqlClient.SqlDataAdapter(showsentence, strconnection)
        Dim record = New DataSet
        submitconnection.Open()
        showdataadapter.Fill(record, "commentary")
        rowsum = record.Tables(0).Rows.Count + 1
        submitconnection.Close()
        usernamevalue = Session("username")
        Dim publishdatevalue As String
        Dim contentvalue As String
        contentvalue = TextBox2.Text
        publishdatevalue = DateTime.Now
        Dim submitcommand As SqlClient.SqlCommand
        If TextBox2.Text = "" Then
            Response.Write("<Script>alert('评论的内容不能为空')</Script>")
        Else
            If usernamevalue = "" Then
                submitsentence = "insert into commentary values('匿名','" & publishdatevalue & "','" & contentvalue & "',0,0,'" & rowsum & "')"
            Else
                submitsentence = "insert into commentary values('" & usernamevalue & "','" & publishdatevalue & "','" & contentvalue & "',0,0,'" & rowsum & "')"
            End If
            submitcommand = New SqlClient.SqlCommand(submitsentence, submitconnection)
            submitconnection.Open()
            submitcommand.ExecuteNonQuery()
            submitconnection.Close()
            Response.Redirect("commentary.aspx")
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Session("uspower") = -1
        Label6.Visible = False
        Button1.Visible = False
    End Sub
End Class