网上购物系统（Task007）——FormView显示商品详细信息
一、在表item中添加字段descn、supplytime、supplydate、supplyarea。因为除descn，其它几个字段内容都差不多，所以，设置一下默认值，以后添加，更新数据库内容时，会更方便。二、在数据集model类库中添加类itemdetails.cs。
[csharp] using system;
namespace westgarden.model
{
public class itemdetails
{
private int itemid;
private string categoryid;
private string name;
private decimal price;
private string image;
private string categoryname;
private string descn;
private string supplytime;
private string supplydate;
private string supplyarea;
public itemdetails() { }
public itemdetails(int itemid, string categoryid, string name, decimal price, string image, string categoryname,
string descn, string supplytime,string supplydate,string supplyarea)
{
this.itemid = itemid;
this.categoryid = categoryid;
this.name = name;
this.price = price;
this.image = image;
this.categoryname = categoryname;
this.descn = descn;
this.supplytime = supplytime;
this.supplydate = supplydate;
this.supplyarea = supplyarea;
}
public int itemid
{
get { return itemid; }
set { itemid = value; }
}
public string categoryid
{
get { return categoryid; }
set { categoryid = value; }
}
public string name
{
get { return name; }
set { name = value; }
}
public decimal price
{
get { return price; }
set { price = value; }
}
public string image
{
get { return image; }
set { image = value; }
}
public string categoryname
{
get { return categoryname; }
set { categoryname = value; }
}
public string descn
{
get { return descn; }
set { descn = value; }
}
public string supplytime
{
get { return supplytime; }
set { supplytime = value; }
}
public string supplydate
{
get { return supplydate; }
set { supplydate = value; }
}
public string supplyarea
{
get { return supplyarea; }
set { supplyarea = value; }
}
}
}
using system;
namespace westgarden.model
{
public class itemdetails
{
private int itemid;
private string categoryid;
private string name;
private decimal price;
private string image;
private string categoryname;
private string descn;
private string supplytime;
private string supplydate;
private string supplyarea;
public itemdetails() { }
public itemdetails(int itemid, string categoryid, string name, decimal price, string image, string categoryname,
string descn, string supplytime,string supplydate,string supplyarea)
{
this.itemid = itemid;
this.categoryid = categoryid;
this.name = name;
this.price = price;
this.image = image;
this.categoryname = categoryname;
this.descn = descn;
this.supplytime = supplytime;
this.supplydate = supplydate;
this.supplyarea = supplyarea;
}
public int itemid
{
get { return itemid; }
set { itemid = value; }
}
public string categoryid
{
get { return categoryid; }
set { categoryid = value; }
}
public string name
{
get { return name; }
set { name = value; }
}
public decimal price
{
get { return price; }
set { price = value; }
}
public string image
{
get { return image; }
set { image = value; }
}
public string categoryname
{
get { return categoryname; }
set { categoryname = value; }
}
public string descn
{
get { return descn; }
set { descn = value; }
}
public string supplytime
{
get { return supplytime; }
set { supplytime = value; }
}
public string supplydate
{
get { return supplydate; }
set { supplydate = value; }
}
public string supplyarea
{
get { return supplyarea; }
set { supplyarea = value; }
}
}
}
三、在数据访问层dal的item.cs类中添加函数getitemdetailsbyitemid()
[csharp] public ilist<itemdetails> getitemdetailsbyitemid(int itemid)
{
ilist<itemdetails> itemdetailsbyitemid = new list<itemdetails>();
sqlparameter parm = new sqlparameter(parm_item_id, sqldbtype.int);
parm.value = itemid;
using (sqldatareader rdr = sqlhelper.executereader(sqlhelper.connectionstringlocaltransaction, commandtype.text, sql_select_itemdetails_by_category, parm))
{
while (rdr.read())
{
itemdetails item = new itemdetails(rdr.getint32(0), rdr.getstring(1), rdr.getstring(2), rdr.getdecimal(3), rdr.getstring(4), rdr.getstring(5),rdr.getstring(6),rdr.getstring(7),rdr.getstring(8),rdr.getstring(9));
itemdetailsbyitemid.add(item);
}
}
return itemdetailsbyitemid;
}
public ilist<itemdetails> getitemdetailsbyitemid(int itemid)
{
ilist<itemdetails> itemdetailsbyitemid = new list<itemdetails>();
sqlparameter parm = new sqlparameter(parm_item_id, sqldbtype.int);
parm.value = itemid;
using (sqldatareader rdr = sqlhelper.executereader(sqlhelper.connectionstringlocaltransaction, commandtype.text, sql_select_itemdetails_by_category, parm))
{
while (rdr.read())
{
itemdetails item = new itemdetails(rdr.getint32(0), rdr.getstring(1), rdr.getstring(2), rdr.getdecimal(3), rdr.getstring(4), rdr.getstring(5),rdr.getstring(6),rdr.getstring(7),rdr.getstring(8),rdr.getstring(9));
itemdetailsbyitemid.add(item);
}
}
return itemdetailsbyitemid;
}
四、controls中添加用户控件itemdetailscontrol.ascx
1、前台代码：
[html] <%@ control language="c#" autoeventwireup="true" codefile="itemdetailscontrol.ascx.cs" inherits="westgarden.web.itemdetailscontrol" %>
<%@ register tagprefix="westgardencontrol" namespace="westgarden.web" %>
<p>
<:formview id="fvwitemdetails" runat="server">
<itemtemplate>
<table cellpadding="0" cellspacing="0">
<tr>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="180">
</td>
</tr>
<tr>
<td width="18">
</td>
<td rowspan="7" width="96">
<asp:image width="144" height="144" id="imgitem" imageurl='<%# eval("image") %>'
alternatetext='<%# eval("name") %>' runat="server" /></td>
<td width="18">
</td>
<td width="96">
商品类别：</td>
<td width="180">
<%# eval("categoryname") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品名称：</td>
<td width="180">
<%# eval("name") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品价格：</td>
<td width="180">
<%# eval("price") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品描述：</td>
<td width="180">
<%# eval("descn") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应时间：</td>
<td width="180">
<%# eval("supplytime") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应日期：</td>
<td width="180">
<%# eval("supplydate") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应地区：</td>
<td width="180">
<%# eval("supplyarea") %>
</td>
</tr>
<tr>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="180">
</td>
</tr>
</table>
</itemtemplate>
</asp:formview>
</p>
<p><a href='items.aspx?categoryid=<%=request.querystring["categoryid"] %>'>< 返回</a></p>
<%@ control language="c#" autoeventwireup="true" codefile="itemdetailscontrol.ascx.cs" inherits="westgarden.web.itemdetailscontrol" %>
<%@ register tagprefix="westgardencontrol" namespace="westgarden.web" %>
<p>
<asp:formview id="fvwitemdetails" runat="server">
<itemtemplate>
<table cellpadding="0" cellspacing="0">
<tr>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="180">
</td>
</tr>
<tr>
<td width="18">
</td>
<td rowspan="7" width="96">
<asp:image width="144" height="144" id="imgitem" imageurl='<%# eval("image") %>'
alternatetext='<%# eval("name") %>' runat="server" /></td>
<td width="18">
</td>
<td width="96">
商品类别：</td>
<td width="180">
<%# eval("categoryname") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品名称：</td>
<td width="180">
<%# eval("name") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品价格：</td>
<td width="180">
<%# eval("price") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
商品描述：</td>
<td width="180">
<%# eval("descn") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应时间：</td>
<td width="180">
<%# eval("supplytime") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应日期：</td>
<td width="180">
<%# eval("supplydate") %>
</td>
</tr>
<tr>
<td width="18">
</td>
<td width="18">
</td>
<td width="96">
供应地区：</td>
<td width="180">
<%# eval("supplyarea") %>
</td>
</tr>
<tr>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="18">
</td>
<td height="18" width="96">
</td>
<td height="18" width="180">
</td>
</tr>
</table>
</itemtemplate>
</asp:formview>
</p>
<p><a href='items.aspx?categoryid=<%=request.querystring["categoryid"] %>'>< 返回</a></p>
2、后台代码
[csharp] using system;
using system.web;
using system.web.ui.webcontrols;
using westgarden.dal;
namespace westgarden.web
{
public partial class itemdetailscontrol : system.web.ui.usercontrol
{
protected void page_load(object sender, eventargs e)
{
int itemkey = int.parse(request.querystring["itemid"]);
item item = new item();
fvwitemdetails.datasource = item.getitemdetailsbyitemid(itemkey);
fvwitemdetails.databind();
}
}
}
using system;
using system.web;
using system.web.ui.webcontrols;
using westgarden.dal;
namespace westgarden.web
{
public partial class itemdetailscontrol : system.web.ui.usercontrol
{
protected void page_load(object sender, eventargs e)
{
int itemkey = int.parse(request.querystring["itemid"]);
item item = new item();
fvwitemdetails.datasource = item.getitemdetailsbyitemid(itemkey);
fvwitemdetails.databind();
}
}
}
五、web中添加窗体itemdetails.aspx并选择母版页masterpage.master，拖入用户控件itemdetailscontrol.ascx，并在page_load()函数中添加代码：
[csharp] protected void page_load(object sender, eventargs e)
{
page.title = webutility.getcategoryname(request.querystring["categoryid"]);
}
作者 yousuos