Asp+语法介绍(六)----数据库篇
浏览：27日期：2022-11-26
;;asp+ 给我们提供了一套数据表格和数据列表的控件。这些控件可以帮助我们定制我们UI(user interFace 用户界面)而不去考虑一种数据库或者其他的数据库。例如：在下面的例子中，我们将要介绍一下<asp:datagrid runat=server>控件是怎么样通过sql 语句给我们提供数据的<%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Data.SQL" %><html>;;;<head>;;;;;;<link rel="stylesheet"href="intro.css">;;;</head>;;;<script language="VB" runat=server>;;;;;;;Sub SubmitBtn_Click(Sender As Object, E As EventArgs);;Dim DS As DataSet;;Dim MyConnection As SQLConnection;;Dim MyCommand As SQLDataSetCommand;;'以下是数据库联结;;MyConnection = New SQLConnection("server=localhost;uid=sa;pwd=;database=pubs");;MyCommand = New SQLDataSetCommand("select * from Titles where type='" + Category.SelectedItem.Value + "'", myConnection);;DS = new DataSet();;MyCommand.FillDataSet(DS, "Titles");;MyList.DataSource = DS.Tables("Titles").DefaultView;;MyList.DataBind();;;;;;;End Sub;;;</script>;;;<body>;;;;;;;<center>;;;;;;;<form action="intro75.aspx" method="post" runat="server">;;;<asp:adrotator AdvertisementFile="ads.xml" BorderColor="black" BorderWidth=1 runat="server"/>;;;<h3> Name: <asp:textbox id="Name" runat="server"/>;;;Category:;;<asp:dropdownlist id="Category" runat=server>;<asp:listitem >psychology</asp:listitem>;<asp:listitem >business</asp:listitem>;<asp:listitem >popular_comp</asp:listitem>;;;;;;</asp:dropdownlist>;;;<asp:button type=submit text="Lookup" OnClick="SubmitBtn_Click" runat="server"/>;;;<p>;;;<ASP:DataGrid id="MyList" HeaderStyle-BackColor="#aaaadd" BackColor="#ccccff" runat="server"/>;;;;;;;</form>;;;;;;;</center>;;;</body></html>这个例子的运行示例在http://tutorial.superexpert.com/quickstart/aspplus/samples/webforms/intro/intro75.aspx数据表格(data grid)控件 <asp:datagrid runat=server> 给我们提供了一种非常简单的方法用传统的UI截面去显示数据查询的结果.Asp+ 的开发者现在还可以通过<asp:dataList runat=server>来定制数据列表显示来定制信息<%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Data.SQL" %><html>;;;<head>;;;;;;<link rel="stylesheet"href="intro.css">;;;</head>;;;<script language="VB" runat=server>;;;;;;;Sub SubmitBtn_Click(Sender As Object, E As EventArgs);;Dim DS As DataSet;;Dim MyConnection As SQLConnection;;Dim MyCommand As SQLDataSetCommand;;MyConnection = New SQLConnection("server=localhost;uid=sa;pwd=;database=pubs");;MyCommand = New SQLDataSetCommand("select * from Titles where type='" + Category.SelectedItem.Value + "'", myConnection);;DS = new DataSet();;MyCommand.FillDataSet(DS, "Titles");;MyList.DataSource = DS.Tables("Titles").DefaultView;;MyList.DataBind();;;;;;;End Sub;;;</script>;;;<body>;;;;;;;<center>;;;;;;;<form action="intro8.aspx" method="post" runat="server">;;;<asp:adrotator AdvertisementFile="ads.xml" BorderColor="black" BorderWidth=1 runat="server"/>;;;<h3> Name: <asp:textbox id="Name" runat="server"/>;;;Category:;;<asp:dropdownlist id="Category" runat=server>;<asp:listitem >psychology</asp:listitem>;<asp:listitem >business</asp:listitem>;<asp:listitem >popular_comp</asp:listitem>;;;;;;</asp:dropdownlist>;;;<asp:button type=submit text="Lookup" OnClick="SubmitBtn_Click" runat="server"/>;;;<p>;;;<asp:datalist id="MyList" repeatcolumns="2" borderwidth="0" runat="server">;;;;;<template name="itemtemplate">;<table>;;;<tr>;;;;;<td>;<img src='https://www.6hehe.com/bcjs/<%# DataBinder.Eval(Container.DataItem, "title_id", "/quickstart/aspplus/images/title-{0}.gif") %>'> ;;;;;</td>;;;;;<td width=250 valign=top>;<b><%# DataBinder.Eval(Container.DataItem, "title") %></b>;<br><br>;Price: <%# DataBinder.Eval(Container.DataItem, "price", "${0}") %> ;;;;;</td>;;;</tr>;</table>;;;;;</template>;;;</asp:datalist>;;;;;;;</form>;;;;;;;</center>;;;</body></html>这个程序的运行例子在http://tutorial.superexpert.com/quickstart/aspplus/samples/webforms/intro/intro8.aspx
相关文章：
