ASP.Net/Components/Help wizard — различия между версиями

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Версия 15:30, 26 мая 2010

Help wizard form (VB.net)

<%--
Code revised from 
ASP.NET Tips & Techniques (Paperback)
by Greg Buczek 

# Publisher: McGraw-Hill/Osborne Media; 1st edition (May 21, 2002)
# Language: English
# ISBN: 0072225149
--%>       
       
       
<%@ Page Language=VB EnableSessionState=true Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OLEDB" %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
    If Not IsPostBack then
        Dim DBConn as OleDbConnection
        Dim DBCommand As OleDbDataAdapter
        Dim DSPageData as New DataSet
        DBConn = New OleDbConnection( _
            "PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
            & "DATA SOURCE=" _
            & Server.MapPath _
            ("HelpDeskDB.mdb;"))
        DBCommand = New OleDbDataAdapter _
            ("Select QuestionID, TitleText, TheMessage " _
            & "From HelpDesk Where ParentID = 0", DBConn) 
        DBCommand.Fill(DSPageData, _
            "Question")
        DBCommand = New OleDbDataAdapter _
            ("Select QuestionID, TheChoice " _
            & "From HelpDesk " _
            & "Where ParentID = " _
                & DSPageData.Tables("Question"). _
                Rows(0).Item("QuestionID") _
                ,DBConn) 
        DBCommand.Fill(DSPageData, _
            "Choices")
        lblTitle.Text = "Help Desk - " _
            & DSPageData.Tables("Question"). _
                Rows(0).Item("TitleText")
        lblQuestion.Text = _
            DSPageData.Tables("Question"). _
                Rows(0).Item("TheMessage")
        ddlAnswers.DataSource = _
            DSPageData.Tables("Choices").DefaultView
        ddlAnswers.DataBind()
    End If
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
    Dim DBConn as OleDbConnection
    Dim DBCommand As OleDbDataAdapter
    Dim DSPageData as New DataSet
    DBConn = New OleDbConnection( _
        "PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
        & "DATA SOURCE=" _
        & Server.MapPath _
        ("HelpDeskDB.mdb;"))
    DBCommand = New OleDbDataAdapter _
        ("Select QorA, TitleText, TheMessage " _
        & "From HelpDesk Where QuestionID = " _
        & ddlAnswers.SelectedItem.Value,DBConn)
    DBCommand.Fill(DSPageData, _
        "Question")
    lblTitle.Text = "Help Desk - " _
        & DSPageData.Tables("Question"). _
            Rows(0).Item("TitleText")
    lblQuestion.Text = _
        DSPageData.Tables("Question"). _
            Rows(0).Item("TheMessage")
    If DSPageData.Tables("Question"). _
                Rows(0).Item("QorA") = "Q" Then
        DBCommand = New OleDbDataAdapter _
            ("Select QuestionID, TheChoice " _
            & "From HelpDesk " _
            & "Where ParentID = " _
            & ddlAnswers.SelectedItem.Value,DBConn)
        DBCommand.Fill(DSPageData, _
            "Choices")
        ddlAnswers.DataSource = _
            DSPageData.Tables("Choices").DefaultView
        ddlAnswers.DataBind()
    Else
        ddlAnswers.Visible = False
        butOK.Visible = False
    End If
End Sub
</script>
<HTML>
<HEAD>
<TITLE>Help Desk</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<CENTER>
<asp:Label 
    id="lblTitle" 
    runat="server"
/>
</CENTER>
<P></P>
<asp:Label 
    id="lblQuestion" 
    runat="server"
/>
<P></P>
<asp:dropdownlist 
    id="ddlAnswers" 
    runat=server
    DataTextField="TheChoice" 
    DataValueField="QuestionID">
</asp:dropdownlist>
<P></P>
<asp:button 
    id="butOK"
    text="OK"
    Type="Submit"
    OnClick="SubmitBtn_Click" 
    runat="server"
/>
</FORM>
</BODY>
</HTML>


<A href="http://www.nfex.ru/Code/ASPDownload/HelpDeskDB.zip">HelpDeskDB.zip( 9 k)</a>

Источник — «http://nfex.ru/index.php?title=ASP.Net/Components/Help_wizard&oldid=1966»