vb.net嵌入网页,vbnet web窗体

100分求一个用VB.net做的简单网页的代码,谢谢!!!

用vb.net做的校友录……(附所有源代码)

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来源:不详 作者 佚名 点击数:31 录入时间:07-12-17 15:21:39

想必大家都上过校友录吧,里面的功能虽然不是很强大,但是为我们这些毕业之后各奔西东的学子来说,到真是提供了一个好的聚集点,下面是我用vb.net做的校友录,当然也不能说是校友录了,只能说是我们班的学友录了:)不过只要你掌握了这种编程思想,校友录就不在话下了。这里我将重点谈一下关于管理员权限赋予。

以前有这个想法的时候,难就难在管理员身份的赋予上,开始想如果一般用户在被提升为管理员之后,我可以把他的信息转到另外一个表中,以后登陆的时候先检查manage表中是否有他就行了,这种办法我已经实现了,是不是有些笨……可是正在我要正式开工的时候,一个想法突然冒了出来,是什么呢?呵呵,就是在数据库中再增加一个字段了如果是第一次注册就让这个字段item(int)的值为0,要是被提升之后就update为1,班级创始人呢?当然了,在他申请时付给他一个班级id,然后先判断班级id为这个已经注册的人信息条数是否为0,如果是,那么就付给他item=2好了。下面的代码中,我没有实现这个功能,因为我做的是班友录的,当然了,我就是管理员喽:)

在这里,我使用的是checkboxlist(两个),一个用来转换数据(visibe=fause),一个用来显示数据,还有一个checkbox用来写全部选中的事件。当然了还有两个按钮事件,一个是用来提升为管理员的,一个是用来降级为一般用户的,这两个按钮在判断为一般用户时

enable都是为fause的,只有当判断登录为管理员时才为true。当然了,如果你是班级创始人,是不可能被降级的:)

这里用来显示信息的我用的是一个datagrid,当判断为非管理员时,删除栏的visible将为fause,为管理员的时候,才为true,也就是说只有管理员才可以删除信息。而不是注册的用户是不能发言的所有的按钮控件的enable将都为fause。

代码如下:board.aspx

%@ Page Language="vb" AutoEventWireup="false" Codebehind="boaman.aspx.vb" Inherits="_99re1.boaman"%

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"

HTML

HEAD

title/title

meta content="Microsoft Visual Studio.NET 7.0" name="GENERATOR"

meta content="Visual Basic 7.0" name="CODE_LANGUAGE"

meta content="javascript" name="vs_defaultClientScript"

meta content="" name="vs_targetSchema"

/HEAD

body background="image/bg.gif" MS_POSITIONING="GridLayout"

form id="Form1" method="post" runat="server"

asp:checkbox id="yourcheck" style="Z-INDEX: 101; LEFT: 84px; POSITION: absolute; TOP: 71px" runat="server" Text="全部选中" AutoPostBack="True" ForeColor="SaddleBrown" Font-Bold="True"/asp:checkbox

asp:button id="Button1" style="Z-INDEX: 102; LEFT: 34px; POSITION: absolute; TOP: 43px" runat="server" Text="提升为管理员" Height="20px" Width="100px" BackColor="Gainsboro" BorderColor="Lavender" BorderWidth="2px" BorderStyle="Outset"/asp:button

asp:button id="Button2" style="Z-INDEX: 103; LEFT: 142px; POSITION: absolute; TOP: 43px" runat="server" Text="降级为一般用户" Height="20px" Width="100px" BackColor="Gainsboro" BorderColor="Lavender" BorderWidth="2px" BorderStyle="Outset"/asp:button

asp:checkboxlist id="CheckBoxList1" style="Z-INDEX: 104; LEFT: 14px; POSITION: absolute; TOP: 10px" runat="server" Visible="False"/asp:checkboxlist

asp:checkboxlist id="mycheck" style="Z-INDEX: 105; LEFT: 98px; POSITION: absolute; TOP: 99px" runat="server" ForeColor="Navy" Font-Size="X-Small"/asp:checkboxlist

asp:label id="Label1" style="Z-INDEX: 106; LEFT: 82px; POSITION: absolute; TOP: 14px" runat="server" ForeColor="Red" Font-Names="方正姚体"(已注册用户)/asp:label

asp:image id="Image1" style="Z-INDEX: 107; LEFT: 260px; POSITION: absolute; TOP: 180px" runat="server" Height="124px" Width="221px" ImageUrl="image/99re1-1.gif"/asp:image

asp:datagrid id="DataGrid1" style="Z-INDEX: 108; LEFT: 250px; POSITION: absolute; TOP: 83px" runat="server" Height="113px" Width="461px" BorderColor="#ffcc66" AutoGenerateColumns="False" HeaderStyle-Font-Size="9" HeaderStyle-HorizontalAlign="Center" HeaderStyle-ForeColor="red" HeaderStyle-Font-Bold="True"

Columns

asp:HyperLinkColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Height="24" ItemStyle-Font-Size="9" DataNavigateUrlField="stu_id" DataNavigateUrlFormatString="querry.aspx?stu_id={0}" DataTextField="stu_id" HeaderText="学号"/asp:HyperLinkColumn

asp:BoundColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="100" ItemStyle-Font-Size="9" DataField="tel" HeaderText="电话"/asp:BoundColumn

asp:BoundColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="80" ItemStyle-Font-Size="9" DataField="oicq" HeaderText="OICQ"/asp:BoundColumn

asp:BoundColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="140" ItemStyle-Font-Size="9" DataField="email" HeaderText="E-mail"/asp:BoundColumn

asp:BoundColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="60" ItemStyle-Font-Size="9" DataField="point" HeaderText="登录次数"/asp:BoundColumn

/Columns

/asp:datagrid

/form

/body

/HTML

下面是codebehind中的内容:boaman.asp.vb

Imports System.Data

Imports System.Data.SqlClient

Public Class boaman

Inherits System.Web.UI.Page

Protected WithEvents yourcheck As System.Web.UI.WebControls.CheckBox

Protected WithEvents Button1 As System.Web.UI.WebControls.Button

Protected WithEvents CheckBoxList1 As System.Web.UI.WebControls.CheckBoxList

Protected WithEvents mycheck As System.Web.UI.WebControls.CheckBoxList

Protected WithEvents Label1 As System.Web.UI.WebControls.Label

Protected WithEvents Image1 As System.Web.UI.WebControls.Image

Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid

Protected WithEvents Button2 As System.Web.UI.WebControls.Button

#Region " Web Form Designer Generated Code "

'This call is required by the Web Form Designer.

System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent()

End Sub

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init

'CODEGEN: This method call is required by the Web Form Designer

'Do not modify it using the code editor.

InitializeComponent()

End Sub

#End Region

Dim conn As SqlConnection = New SqlConnection("server=lixinri;uid=sa;pwd=;database=99re1")

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

'////////////////////判断是否为过客

If Session("stu_id") = "" Then

Button1.Enabled = False : Button2.Enabled = False

'////////////////////调用check()事件

check()

Else

If Not IsPostBack Then

Dim sql As String = "select * from pwd where stu_id=@stu_id"

Dim comm As SqlCommand = New SqlCommand(sql, conn)

comm.Parameters.Add(New SqlParameter("@stu_id", SqlDbType.Int, 4))

comm.Parameters("@stu_id").Value = Session("stu_id")

Dim dr As SqlDataReader

conn.Open()

dr = comm.ExecuteReader

While dr.Read

If dr.Item("term") = "0" Then

'///////////////////判断是否为一般用户

dr.Close()

Button1.Enabled = False : Button2.Enabled = False

Dim sql_1 As String = "select a.stu_id as stu_id,a.term,b.name as name,b.tel as tel,b.call as oicq,b.point as point,b.email from pwd a,stu_base b where a.stu_id=b.stu_id"

Dim cmd As New SqlCommand(sql_1, conn)

dr = cmd.ExecuteReader

While dr.Read

If dr.Item("term") = "1" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=darkorange(管理员)/font")

ElseIf dr.Item("term") = "2" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班级创始人)font")

Else

mycheck.Items.Add("u" dr.Item("name") "/u")

End If

CheckBoxList1.Items.Add(dr.Item("stu_id"))

End While

Else

'////////////////////判断是否为管理员

dr.Close()

Button1.Enabled = True : Button2.Enabled = True

Dim sql_1 As String = "select a.stu_id as stu_id,a.term,b.name as name,b.tel as tel,b.call as oicq,b.point as point,b.email from pwd a,stu_base b where a.stu_id=b.stu_id"

Dim cmd As New SqlCommand(sql_1, conn)

dr = cmd.ExecuteReader

While dr.Read

If dr.Item("term") = "1" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=darkorange(管理员)/font")

ElseIf dr.Item("term") = "2" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班级创始人)font")

Else

mycheck.Items.Add("u" dr.Item("name") "/u")

End If

CheckBoxList1.Items.Add(dr.Item("stu_id"))

End While

End If

End While

dr.Close()

'////////////////////////取出数据,填充dataset

Dim mysql As String = "select a.stu_id as stu_id,a.term,b.name as name,b.tel as tel,b.call as oicq,b.point as point,b.email from pwd a,stu_base b where a.stu_id=b.stu_id"

comm = New SqlCommand(mysql, conn)

Dim mycomm As SqlDataAdapter = New SqlDataAdapter(mysql, conn)

Dim ds As DataSet = New DataSet()

mycomm.Fill(ds, "base")

DataGrid1.DataSource = ds.Tables("base").DefaultView

DataGrid1.DataBind()

End If

End If

End Sub

'///////////////////////书写check()事件

Sub check()

If Not IsPostBack Then

Dim mysql As String = "select a.stu_id as stu_id,a.term,b.name as name,b.tel as tel,b.call as oicq,b.point as point,b.email from pwd a,stu_base b where a.stu_id=b.stu_id"

Dim comm As New SqlCommand(mysql, conn)

Dim dr As SqlDataReader

conn.Open()

dr = comm.ExecuteReader

While dr.Read

If dr.Item("term") = "1" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=darkorange(管理员)/font")

ElseIf dr.Item("term") = "2" Then

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班级创始人)font")

Else

mycheck.Items.Add("u" dr.Item("name") "/u")

End If

CheckBoxList1.Items.Add(dr.Item("stu_id"))

End While

dr.Close()

Dim mycomm As SqlDataAdapter = New SqlDataAdapter(mysql, conn)

Dim ds As DataSet = New DataSet()

mycomm.Fill(ds, "base")

DataGrid1.DataSource = ds.Tables("base").DefaultView

DataGrid1.DataBind()

End If

End Sub

'/////////////////////填充yourcheck

Private Sub yourcheck_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles yourcheck.CheckedChanged

Dim i As Integer

For i = 0 To mycheck.Items.Count - 1

If yourcheck.Checked Then

mycheck.Items(i).Selected = True

Else

mycheck.Items(i).Selected = False

End If

Next

End Sub

'///////////////////////提升一般用户为管理员

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

conn.Open()

Dim i As Integer

For i = 0 To mycheck.Items.Count - 1

If mycheck.Items(i).Selected Then

Dim sql_1 As String = "update pwd set term=1 where stu_id=@stu_id and term=0"

Dim comm As SqlCommand = New SqlCommand(sql_1, conn)

comm.Parameters.Add(New SqlParameter("@stu_id", SqlDbType.Int, 4))

comm.Parameters("@stu_id").Value = CheckBoxList1.Items(i).Text

comm.ExecuteNonQuery()

End If

Next

Response.Redirect("boaman.aspx")

End Sub

'///////////////////////降级管理员为一般用户

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

conn.Open()

Dim i As Integer

For i = 0 To mycheck.Items.Count - 1

If mycheck.Items(i).Selected Then

Dim sql_1 As String = "update pwd set term=0 where stu_id=@stu_id and term=1"

Dim comm As SqlCommand = New SqlCommand(sql_1, conn)

comm.Parameters.Add(New SqlParameter("@stu_id", SqlDbType.Int, 4))

comm.Parameters("@stu_id").Value = CheckBoxList1.Items(i).Text

comm.ExecuteNonQuery()

End If

Next

Response.Redirect("boaman.aspx")

End Sub

End Class

当然了,这里面还有好多不足的地方,恳求高手批评指正。

校友录还有一些其它的功能就很简单了,这里就不再探讨了。

vb.net加载嵌入式资源(DLL,自定义资源)

很简单,点击菜单“项目”--“WindowsApplication1属性”

在属性面板里点“资源”,这里可添加字符串资源、图片资源、多媒体资源等等。

使用资源很简单,举例如下:

  Label1.Text = My.Resources.String1

  PictureBox1.Image = My.Resources.小猫

如何用vb.net进行网站开发

打开VS , 选择VisualBasic -- Web -- ASP.NET Web 应用程序

如下图:

vb.net和asp.net的区别

VB.NET是一种.NET编程语言,与之平行的是C#

VC++.NET

等.

net语言

ASP.NET

是一种使嵌入网页中的脚本可由因特网服务器执行的

服务器端

脚本技术。

简单地说就是编写网站的技术

,与之平行的是PHP,ASP等.

ASP.NET后台代码可用VB.NET

C#编写.

vb.net 直接通过浏览器操作网页

你说的操作是像人一样用鼠标点击网页?

直接应该是不行的,可以考虑先抓包分析数据包,在模拟浏览器发送请求获取数据,然后进行相应处理

怎样在VB.NET里超链接一个网页

这个是超链接的target 属性,具体写法为: XXX 使用 Target 属性,你可以定义被链接的文档在何处显示,如果把链接的 target 属性设置为 "_blank"


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