VB.NET包含解析html的能力嗎?

.NET 提供了一個運行庫叫mshtml，在.NET 2.0中提供了WebBrowser組建，提供了一般網(wǎng)頁的訪問，其中有強制類型化的Document屬性，為網(wǎng)頁的整個節(jié)點結(jié)構(gòu)提供的良好的訪問方式。

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100分求一個用VB.net做的簡單網(wǎng)頁的代碼，謝謝！！！

用vb.net做的校友錄……（附所有源代碼）

來源：不詳 作者 佚名 點擊數(shù)：31 錄入時間：07-12-17 15:21:39

想必大家都上過校友錄吧，里面的功能雖然不是很強大，但是為我們這些畢業(yè)之后各奔西東的學(xué)子來說，到真是提供了一個好的聚集點，下面是我用vb.net做的校友錄，當(dāng)然也不能說是校友錄了，只能說是我們班的學(xué)友錄了：）不過只要你掌握了這種編程思想，校友錄就不在話下了。這里我將重點談一下關(guān)于管理員權(quán)限賦予。

以前有這個想法的時候，難就難在管理員身份的賦予上，開始想如果一般用戶在被提升為管理員之后，我可以把他的信息轉(zhuǎn)到另外一個表中，以后登陸的時候先檢查manage表中是否有他就行了，這種辦法我已經(jīng)實現(xiàn)了，是不是有些笨……可是正在我要正式開工的時候，一個想法突然冒了出來，是什么呢？呵呵，就是在數(shù)據(jù)庫中再增加一個字段了如果是第一次注冊就讓這個字段item(int)的值為0，要是被提升之后就update為1，班級創(chuàng)始人呢？當(dāng)然了，在他申請時付給他一個班級id，然后先判斷班級id為這個已經(jīng)注冊的人信息條數(shù)是否為0，如果是，那么就付給他item=2好了。下面的代碼中，我沒有實現(xiàn)這個功能，因為我做的是班友錄的，當(dāng)然了，我就是管理員嘍：）

在這里，我使用的是checkboxlist(兩個)，一個用來轉(zhuǎn)換數(shù)據(jù)（visibe=fause），一個用來顯示數(shù)據(jù)，還有一個checkbox用來寫全部選中的事件。當(dāng)然了還有兩個按鈕事件，一個是用來提升為管理員的，一個是用來降級為一般用戶的，這兩個按鈕在判斷為一般用戶時

enable都是為fause的，只有當(dāng)判斷登錄為管理員時才為true。當(dāng)然了，如果你是班級創(chuàng)始人，是不可能被降級的：）

這里用來顯示信息的我用的是一個datagrid，當(dāng)判斷為非管理員時，刪除欄的visible將為fause，為管理員的時候，才為true，也就是說只有管理員才可以刪除信息。而不是注冊的用戶是不能發(fā)言的所有的按鈕控件的enable將都為fause。

代碼如下：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="全部選中" 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="提升為管理員" 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="降級為一般用戶" 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="方正姚體"（已注冊用戶）/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="學(xué)號"/asp:HyperLinkColumn

asp:BoundColumn ItemStyle-ForeColor="navy" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="100" ItemStyle-Font-Size="9" DataField="tel" HeaderText="電話"/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="登錄次數(shù)"/asp:BoundColumn

/Columns

/asp:datagrid

/form

/body

/HTML

下面是codebehind中的內(nèi)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

'////////////////////判斷是否為過客

If Session("stu_id") = "" Then

Button1.Enabled = False : Button2.Enabled = False

'////////////////////調(diào)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

'///////////////////判斷是否為一般用戶

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(管理員)/font")

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

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班級創(chuàng)始人)font")

Else

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

End If

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

End While

Else

'////////////////////判斷是否為管理員

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(管理員)/font")

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

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班級創(chuàng)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()

'////////////////////////取出數(shù)據(jù)，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

'///////////////////////書寫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(管理員)/font")

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

mycheck.Items.Add("u" dr.Item("name") "/u" "font color=red(班級創(chuàng)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

'///////////////////////提升一般用戶為管理員

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

'///////////////////////降級管理員為一般用戶

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

當(dāng)然了，這里面還有好多不足的地方，懇求高手批評指正。

校友錄還有一些其它的功能就很簡單了，這里就不再探討了。

如何創(chuàng)建一個VB.NET版的網(wǎng)站

應(yīng)該說是asp.net(vb.net)的網(wǎng)站,后臺程序是用vb.net寫的。

1、安裝vs.net軟件(選默認(rèn)語言是vb.net)，安裝iis服務(wù)器,安裝數(shù)據(jù)庫

2、運行vs.net軟件,新建asp.net網(wǎng)站,寫好網(wǎng)頁。需要具備的知識點有html+div、javascript、jqurey、AJAX、vb.net、數(shù)據(jù)庫的操作等。

3、在網(wǎng)上購買一個網(wǎng)站虛擬空間，購買一個域名,發(fā)布自已做好的網(wǎng)站上去就OK了

vb.net中如何寫代碼顯示幫助文檔（html）

在按鈕的Click事件處理函數(shù)中，添加

dim str as string="..\help.html" '文件路徑名

System.Diagnostics.Process.Start(str)

vb.net后臺怎么輸出一個通過循環(huán)判斷 html 頁面

RT 在頁面設(shè)計視圖雙擊頁面空白的地方，就自動添加了 雙擊頁面空白地方就出來了！~

vb.net 怎么得到得到 網(wǎng)頁 htmldocument 不用webbrowser

For Each a In WebBrowser1.Document.getElementsByTagName("input")

Select Case a.Name

Case "txtCSRQ"

Text1.Text = a.Value

End Select

Next

在VB6.0下用此方法可以得到value的值 1993-05-10，VB.net的話沒用過，轉(zhuǎn)換一下應(yīng)該可以的。

希望可以幫到你，滿意請采納，有問題請追問^_^