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1.A,运行效果图 1.B,源代码 复制代码 代码如下: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="DropLvw.aspx.cs" Inherits="DropLvw" %> <!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> 请选择大分类：<asp:DropDownList ID="drop" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource1" DataTextField="CategoryName" DataValueField="CategoryID"> </asp:DropDownList> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>" SelectCommand="SELECT [CategoryID], [CategoryName] FROM [Categories]"> </asp:SqlDataSource> <hr /> 该分类下的产品：<br /> <asp:ListView ID="lvw" runat="server" DataKeyNames="ProductID" DataSourceID="SqlDataSource2"> <ItemTemplate> <tr style=""> <td> <asp:Label ID="ProductIDLabel" runat="server" Text='<%# Eval("ProductID") %>' /> </td> <td> <asp:Label ID="ProductNameLabel" runat="server" Text='<%# Eval("ProductName") %>' /> </td> <td> <asp:Label ID="CategoryIDLabel" runat="server" Text='<%# Eval("CategoryID") %>' /> </td> <td> <asp:Label ID="UnitPriceLabel" runat="server" Text='<%# Eval("UnitPrice") %>' /> </td> </tr> </ItemTemplate> <AlternatingItemTemplate> <tr style=""> <td> <asp:Label ID="ProductIDLabel" runat="server" Text='<%# Eval("ProductID") %>' /> </td> <td> <asp:Label ID="ProductNameLabel" runat="server" Text='<%# Eval("ProductName") %>' /> </td> <td> <asp:Label ID="CategoryIDLabel" runat="server" Text='<%# Eval("CategoryID") %>' /> </td> <td> <asp:Label ID="UnitPriceLabel" runat="server" Text='<%# Eval("UnitPrice") %>' /> </td> </tr> </AlternatingItemTemplate> <EmptyDataTemplate> <table runat="server" style=""> <tr> <td> 未返回数据。</td> </tr> </table> </EmptyDataTemplate> <InsertItemTemplate> <tr style=""> <td> <asp:Button ID="InsertButton" runat="server" CommandName="Insert" Text="插入" /> <asp:Button ID="CancelButton" runat="server" CommandName="Cancel" Text="清除" /> </td> <td> </td> <td> <asp:TextBox ID="ProductNameTextBox" runat="server" Text='<%# Bind("ProductName") %>' /> </td> <td> <asp:TextBox ID="CategoryIDTextBox" runat="server" Text='<%# Bind("CategoryID") %>' /> </td> <td> <asp:TextBox ID="UnitPriceTextBox" runat="server" Text='<%# Bind("UnitPrice") %>' /> </td> </tr> </InsertItemTemplate> <LayoutTemplate> <table runat="server"> <tr runat="server"> <td runat="server"> <table ID="itemPlaceholderContainer" runat="server" border="0" style=""> <tr runat="server" style=""> <th runat="server"> ProductID</th> <th runat="server"> ProductName</th> <th runat="server"> CategoryID</th> <th runat="server"> UnitPrice</th> </tr> <tr ID="itemPlaceholder" runat="server"> </tr> </table> </td> </tr> <tr runat="server"> <td runat="server" style=""> </td> </tr> </table> </LayoutTemplate> <EditItemTemplate> <tr style=""> <td> <asp:Button ID="UpdateButton" runat="server" CommandName="Update" Text="更新" /> <asp:Button ID="CancelButton" runat="server" CommandName="Cancel" Text="取消" /> </td> <td> <asp:Label ID="ProductIDLabel1" runat="server" Text='<%# Eval("ProductID") %>' /> </td> <td> <asp:TextBox ID="ProductNameTextBox" runat="server" Text='<%# Bind("ProductName") %>' /> </td> <td> <asp:TextBox ID="CategoryIDTextBox" runat="server" Text='<%# Bind("CategoryID") %>' /> </td> <td> <asp:TextBox ID="UnitPriceTextBox" runat="server" Text='<%# Bind("UnitPrice") %>' /> </td> </tr> </EditItemTemplate> <SelectedItemTemplate> <tr style=""> <td> <asp:Label ID="ProductIDLabel" runat="server" Text='<%# Eval("ProductID") %>' /> </td> <td> <asp:Label ID="ProductNameLabel" runat="server" Text='<%# Eval("ProductName") %>' /> </td> <td> <asp:Label ID="CategoryIDLabel" runat="server" Text='<%# Eval("CategoryID") %>' /> </td> <td> <asp:Label ID="UnitPriceLabel" runat="server" Text='<%# Eval("UnitPrice") %>' /> </td> </tr> </SelectedItemTemplate> </asp:ListView> <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>" SelectCommand="SELECT [ProductID], [ProductName], [CategoryID], [UnitPrice] FROM [Products] WHERE ([CategoryID] = @CategoryID)"> <SelectParameters> <asp:ControlParameter ControlID="drop" DefaultValue="1" Name="CategoryID" PropertyName="SelectedValue" Type="Int32" /> </SelectParameters> </asp:SqlDataSource> </div> </form> </body> </html> /web.config 复制代码 代码如下: <connectionStrings> <add name="NorthwindConnectionString" connectionString="Data Source=.;Initial Catalog=Northwind;Integrated Security=True" providerName="System.Data.SqlClient"/> </connectionStrings> 1.C,资源下载 |
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