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章节练习

    第5章 课后练习

    1.解释代码:请解释下述代码的含义。(10分)
    CalendarEx.aspx :
    <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
    <title>无标题页</title>
    </head>
    <body>
    <form id="form1" runat="server">
    <div>
    <asp:Calendar ID="Calendar1" runat="server" BackColor="White" BorderColor="White"
    BorderWidth="1px" Font-Names="Verdana" Font-Size="9pt" ForeColor="Black" Height="190px"
    NextPrevFormat="FullMonth" Width="350px">
    <SelectedDayStyle BackColor="#333399" ForeColor="White" />
    <TodayDayStyle BackColor="#CCCCCC" />
    <OtherMonthDayStyle ForeColor="#999999" />
    <NextPrevStyle Font-Bold="True" Font-Size="8pt" ForeColor="#333333" VerticalAlign="Bottom" />
    <DayHeaderStyle Font-Bold="True" Font-Size="8pt" />
    <TitleStyle BackColor="White" BorderColor="Black" BorderWidth="4px" Font-Bold="True"
    Font-Size="12pt" ForeColor="#333399" />
    </asp:Calendar>
    <br />
    <asp:Label ID="Label1" runat="server"></asp:Label>&nbsp;</div>
    </form>
    </body>
    </html>
    --------
    CalendarEx.vb :

Partial Class _Default
    Inherits System.Web.UI.Page

Protected Sub Calendar1_SelectionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Calendar1.SelectionChanged
    Label1.Text = Calendar1.SelectedDate.ToShortDateString()
    End Sub
    End Class

   2.解释代码:请解释下述代码的含义。

    DropDownList.aspx :
    <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
    <title>无标题页</title>
    </head>
    <body>
    <form id="form1" runat="server">
    <div>
    <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True">
    <asp:ListItem>Item1</asp:ListItem>
    <asp:ListItem>Item2</asp:ListItem>
    <asp:ListItem>Item3</asp:ListItem>
    </asp:DropDownList>
    <asp:Label ID="Label1" runat="server"></asp:Label></div>
    </form>
    </body>
    </html>
    --------
    DropDownList.vb :

Partial Class _Default
    Inherits System.Web.UI.Page

Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
    Label1.Text = DropDownList1.SelectedItem.Value.ToString()

End Sub
    End Class
    --------


                         
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