急求 急急急急急急急~类似于京东的购物车产品加减的例子 大侠们 前辈们 帮帮忙吧 这个问题我都弄两天了 还是没有出来 我用的js 但是对js不太熟悉 所以没做好 希望前辈们 帮帮忙 给点思路 最好有例子 谢谢了 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 那麻烦你 能不能给我看看啊 邮箱是[email protected] 可以么 你通过XML来进行购物车的实现,然后用ajax来实现无刷新删除! 我现在都蒙了 这个问题都两天了 还没解决 xml不太会用 完整的例子<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { System.Data.DataTable dt = new System.Data.DataTable(); System.Data.DataRow dr; dt.Columns.Add(new System.Data.DataColumn("ProductCode", typeof(System.String))); dt.Columns.Add(new System.Data.DataColumn("ProductName", typeof(System.String))); dt.Columns.Add(new System.Data.DataColumn("MallPrice", typeof(System.Decimal))); dt.Columns.Add(new System.Data.DataColumn("Num", typeof(System.Int32))); System.Random rd = new System.Random(Environment.TickCount); ; for (int i = 0; i < 8; i++) { dr = dt.NewRow(); dr[0] = "孟" + i.ToString(); dr[1] = "孟孟" + i.ToString(); dr[2] = System.Math.Round(rd.NextDouble() * 100, 2); dr[3] = rd.Next(9999); dt.Rows.Add(dr); } GridView1.DataSource = dt; GridView1.DataBind(); } } protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.Footer) { TableCellCollection tcc = e.Row.Cells; int columns = tcc.Count; tcc.Clear(); e.Row.Cells.Add(new TableCell()); e.Row.Cells[0].Attributes.Add("colspan", columns.ToString()); e.Row.Cells[0].HorizontalAlign = HorizontalAlign.Right; } } decimal totalCount = 0; protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { String n = DataBinder.Eval(e.Row.DataItem, "Num").ToString(); String price = DataBinder.Eval(e.Row.DataItem, "MallPrice").ToString(); int num = 0; Int32.TryParse(n, out num); decimal MallPrice = Convert.ToDecimal(price); totalCount += num * MallPrice; e.Row.Cells[4].Text = (num * MallPrice).ToString(); } if (e.Row.RowType == DataControlRowType.Footer) { e.Row.Cells[0].Text = "<b>总计:</b><span id='AllCount'>" + totalCount.ToString() + "</span>"; } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title></title> <script type="text/javascript"> function jia(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; num = tr.cells[3].getElementsByTagName("input")[0]; var t = parseInt(num.value, 10); if (isNaN(t)) num.value = 0; else num.value = t + 1; countRow(tr) } function jian(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; num = tr.cells[3].getElementsByTagName("input")[0]; var t = parseInt(num.value, 10); if (isNaN(t)) num.value = 0; else { if (t < 1) return; num.value = t - 1; } countRow(tr) } function bian(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; countRow(tr) } function countRow(row) { price = parseFloat(row.cells[2].innerHTML); if (isNaN(price)) { row.cells[4].innerHTML = "0" return; } num = row.cells[3].getElementsByTagName("input")[0]; t = parseInt(num.value, 10); if (isNaN(t)) t = 0; row.cells[4].innerHTML = roundPrice(price * t); CountAll(); } function CountAll() { var total = 0; table = document.getElementById('<%=GridView1.ClientID %>'); if (table.rows.length < 3) return; for (i = 1; i < table.rows.length - 1; i++) { p = parseFloat(table.rows[i].cells[4].innerHTML); if (isNaN(p)) p = 0; total += p; } document.getElementById('AllCount').innerHTML = roundPrice(total); } function roundPrice(x) { return Math.round(x * 100) / 100; } </script></head><body> <form id="form1" runat="server"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductCode" ShowFooter="true" OnRowCreated="GridView1_RowCreated" OnRowDataBound="GridView1_RowDataBound"> <Columns> <asp:BoundField DataField="ProductCode" HeaderText="商品编号"> <HeaderStyle BorderColor="#CCCCCC" /> </asp:BoundField> <asp:HyperLinkField DataNavigateUrlFields="ProductCode" DataNavigateUrlFormatString="Read.aspx?id={0}" DataTextField="ProductName" HeaderText="商品名称" Target="_parent" /> <asp:TemplateField HeaderText="价格"> <ItemTemplate> <%#Eval("MallPrice") %> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="商品数量" ControlStyle-CssClass="No"> <ItemTemplate> <a href="#" onclick="jian(this);return false;">-</a><input type="text" value='<%#Eval("Num")%>' onchange="bian(this)" /><a href="#" onclick="jia(this);return false;">+</a> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="总计"> <ItemTemplate> </ItemTemplate> </asp:TemplateField> <asp:CommandField HeaderText="操作" ShowDeleteButton="True" /> </Columns> </asp:GridView> </form></body></html> 你好 我现在加减实现了 但是我显示的产品总价 是所有的产品 单个产品总价不现实 而且实在GridView外边的一个label中显示的 我该怎么做啊 这是我后台代码 //绑定购物车 void BindShopCart() { if (Session["Cart"] == null) { this.ImageButton1.Visible = false; this.Label1.Text = "您还没有购买任何产品!"; } else { cartTable = (DataTable)Session["Cart"]; if (cartTable.Rows.Count == 0) { this.Label1.Visible = true; this.Label1.Text = "您的购物车上还没有装东西!"; this.ImageButton1.Visible = false; this.GridView1.Visible = false; this.TotalPrice.Text = "0.00"; } else { this.Label1.Visible = false; this.ImageButton1.Visible = true; this.GridView1.Visible = true; //创建一个数据表 cart = new DataTable(); DataColumn c1 = new DataColumn("ProductCode"); DataColumn c2 = new DataColumn("ProImage"); DataColumn c3 = new DataColumn("ProductName"); DataColumn c4 = new DataColumn("MallPrice"); DataColumn c5 = new DataColumn("Intergral"); DataColumn c6 = new DataColumn("Num"); //把每行的数据添加到数据表中 cart.Columns.Add(c1); cart.Columns.Add(c2); cart.Columns.Add(c3); cart.Columns.Add(c4); cart.Columns.Add(c5); cart.Columns.Add(c6); //int i = 1;商品在购物车上的序号 int Intergral = 0; float price;//商品单价 int num;//商品数量 float TPrice = 0;//商品总价 float total = 0;//商品总数 //创建数据行 执行 DataRow row; foreach (DataRow dr in cartTable.Rows) { //获取图片 int id = Convert.ToInt32(dr["ProductCode"].ToString()); string sql = string.Format("select ProImage from MarketProduct where id='{0}'", id); string flag = Farm.DBUtility.DbHelperSQL.GetSingle(sql).ToString(); //创建一个新行 row = cart.NewRow(); row["ProductCode"] = dr["ProductCode"]; row["ProImage"] = flag; row["ProductName"] = dr["ProductName"]; row["MallPrice"] = dr["MallPrice"]; row["Intergral"] = Intergral; row["Num"] = dr["Num"]; //用户计算产品数 num = int.Parse(dr["Num"].ToString()); price = float.Parse(dr["MallPrice"].ToString()); //把创建的行添加到表中 cart.Rows.Add(row); TPrice += num * price; total += num; //显示标签 this.TotalPrice.Text = TPrice.ToString(); this.GridView1.Visible = true; this.GridView1.DataSource = cart.DefaultView; this.GridView1.DataBind(); } } } }前台<table> <tbody> <tr class="biao"> <td> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductCode" Width="1052px" onrowdeleting="GridView1_RowDeleting" CssClass="No" onrowdatabound="GridView1_RowDataBound" onrowcreated="GridView1_RowCreated"> <Columns> <asp:BoundField DataField="ProductCode" HeaderText="商品编号" > </asp:BoundField> <asp:ImageField DataAlternateTextField="ProImage" DataImageUrlField="ProImage" DataImageUrlFormatString="../UploadFile/img/{0}" HeaderText="商品图片"> </asp:ImageField> <asp:BoundField DataField="ProductName" HeaderText="商品名称" /> <asp:TemplateField HeaderText="价格"> <ItemTemplate> <input type="text" style="border:none" id="MallPrice" value='<%#Eval("MallPrice") %>' /></span> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="Intergral" HeaderText="赠送积分" /> <asp:TemplateField HeaderText="商品数量" > <ItemTemplate> <a href="#" onclick="jian(this);return false;">-</a> <input type="text" id="num" value='<%#Eval("Num")%>' onchange="bian()" /> <a href="#" onclick="jia(this);return false;">+</a> </ItemTemplate> </asp:TemplateField> <asp:CommandField HeaderText="删除次商品" ShowDeleteButton="True" > <ControlStyle BorderWidth="0px" Width="40px" /> </asp:CommandField> </Columns> </asp:GridView> </td> </tr> </tbody> <tfoot> <tr> <td colspan="6"> <asp:Label ID="Label1" runat="server" ></asp:Label> 商品总金额: <span>¥<asp:Label ID="TotalPrice" runat="server" ></asp:Label></span>元</td> </tr>麻烦给看一下 document.getElementById('<%=Label1.CLientID%>').innerHTML = roundPrice(total);就是总价 你先拷贝我的代码先感受下, onchange="bian()" />这些照我的改 完整的代码<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { System.Data.DataTable dt = new System.Data.DataTable(); System.Data.DataRow dr; dt.Columns.Add(new System.Data.DataColumn("ProductCode", typeof(System.String))); dt.Columns.Add(new System.Data.DataColumn("ProductName", typeof(System.String))); dt.Columns.Add(new System.Data.DataColumn("MallPrice", typeof(System.Decimal))); dt.Columns.Add(new System.Data.DataColumn("Num", typeof(System.Int32))); dt.Columns.Add(new System.Data.DataColumn("Intergral", typeof(System.Int32))); dt.Columns.Add(new System.Data.DataColumn("ProImage", typeof(System.String))); System.Random rd = new System.Random(Environment.TickCount); ; for (int i = 0; i < 8; i++) { dr = dt.NewRow(); dr[0] = "孟" + i.ToString(); dr[1] = "孟孟" + i.ToString(); dr[2] = System.Math.Round(rd.NextDouble() * 100, 2); dr[3] = rd.Next(9999); dr[4] = i; dr[5] = "http://dotnet.aspx.cc/Images/meng.gif"; dt.Rows.Add(dr); } GridView1.DataSource = dt; GridView1.DataBind(); TotalPrice.Text = totalCount.ToString(); } } decimal totalCount = 0; protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { String n = DataBinder.Eval(e.Row.DataItem, "Num").ToString(); String price = DataBinder.Eval(e.Row.DataItem, "MallPrice").ToString(); int num = 0; Int32.TryParse(n, out num); decimal MallPrice = Convert.ToDecimal(price); totalCount += num * MallPrice; e.Row.Cells[6].Text = (num * MallPrice).ToString(); } } protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) { Response.Write("执行SQL DELETE ProductCode=" + GridView1.DataKeys[e.RowIndex].Value.ToString()); }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title></title> <script type="text/javascript"> function jia(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; num = tr.cells[5].getElementsByTagName("input")[0]; var t = parseInt(num.value, 10); if (isNaN(t)) num.value = 0; else num.value = t + 1; countRow(tr) } function jian(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; num = tr.cells[5].getElementsByTagName("input")[0]; var t = parseInt(num.value, 10); if (isNaN(t)) num.value = 0; else { if (t < 1) return; num.value = t - 1; } countRow(tr) } function bian(ele) { tr = ele.parentNode; while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode; countRow(tr) } function countRow(row) { price = parseFloat(row.cells[3].innerHTML); if (isNaN(price)) { row.cells[6].innerHTML = "0" return; } num = row.cells[5].getElementsByTagName("input")[0]; t = parseInt(num.value, 10); if (isNaN(t)) t = 0; row.cells[6].innerHTML = roundPrice(price * t); CountAll(); } function CountAll() { var total = 0; table = document.getElementById('<%=GridView1.ClientID %>'); if (table.rows.length < 3) return; for (i = 1; i < table.rows.length; i++) { p = parseFloat(table.rows[i].cells[6].innerHTML); if (isNaN(p)) p = 0; total += p; } document.getElementById('<%=TotalPrice.ClientID %>').innerHTML = roundPrice(total); } function roundPrice(x) { return Math.round(x * 100) / 100; } </script></head><body> <form id="form1" runat="server"> <table> <tbody> <tr class="biao"><td> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductCode" Width="1052px" CssClass="No" OnRowDataBound="GridView1_RowDataBound" OnRowDeleting="GridView1_RowDeleting"> <Columns> <asp:BoundField DataField="ProductCode" HeaderText="商品编号"></asp:BoundField> <asp:ImageField DataAlternateTextField="ProImage" DataImageUrlField="ProImage" HeaderText="商品图片"> </asp:ImageField> <asp:BoundField DataField="ProductName" HeaderText="商品名称" /> <asp:TemplateField HeaderText="价格"> <ItemTemplate> <%#Eval("MallPrice") %> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="Intergral" HeaderText="赠送积分" /> <asp:TemplateField HeaderText="商品数量"> <ItemTemplate> <a href="#" onclick="jian(this);return false;">-</a> <input type="text" id="num" value='<%#Eval("Num")%>' onchange="bian(this)" /> <a href="#" onclick="jia(this);return false;">+</a> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="小计"> <ItemTemplate> </ItemTemplate> </asp:TemplateField> <asp:CommandField HeaderText="删除次商品" ShowDeleteButton="True"> <ControlStyle BorderWidth="0px" Width="40px" /> </asp:CommandField> </Columns> </asp:GridView> </td></tr> </tbody> <tfoot> <tr><td colspan="6"> <asp:Label ID="Label1" runat="server"></asp:Label> 商品总金额: <span>¥<asp:Label ID="TotalPrice" runat="server"></asp:Label></span>元</td> </tr> </table> </form></body></html> 你要去学习row[x].cells[y].innerHTMLrows.length这些红色字含义,不要乱写,乱套!! 你好 又出现两个问题 首先当数据是一行时那个label的值不变 那个小计栏里的值变化 其次是当填写订单时产品的数量不是购物车里产品的数量 麻烦你再给看看呗 前台js调用后台c#方法为什么每次都在第一次加载时执行 各位大侠 谁有好看的网页登录注册界面啊 推荐下!! 大家分享!! 谢谢!! 请问如何修改 怎么导出数据 视图和嵌套查询哪个效率更高. 数据蒸发掉了 大问题.... 在哪儿能找到关于水晶报表存储过程的书或资料呢 FreeTextBox控件图片显示不了。 求:谁有免费的网站后台管理系统 jquery 来访问后台方法 取不到值得问题 这个问题应该很简单啊但就是调不通!!!!!!!
<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server"> protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add(new System.Data.DataColumn("ProductCode", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("ProductName", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("MallPrice", typeof(System.Decimal)));
dt.Columns.Add(new System.Data.DataColumn("Num", typeof(System.Int32)));
System.Random rd = new System.Random(Environment.TickCount); ; for (int i = 0; i < 8; i++)
{
dr = dt.NewRow();
dr[0] = "孟" + i.ToString();
dr[1] = "孟孟" + i.ToString();
dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
dr[3] = rd.Next(9999);
dt.Rows.Add(dr);
}
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Footer)
{
TableCellCollection tcc = e.Row.Cells;
int columns = tcc.Count;
tcc.Clear();
e.Row.Cells.Add(new TableCell());
e.Row.Cells[0].Attributes.Add("colspan", columns.ToString());
e.Row.Cells[0].HorizontalAlign = HorizontalAlign.Right;
}
} decimal totalCount = 0;
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
String n = DataBinder.Eval(e.Row.DataItem, "Num").ToString();
String price = DataBinder.Eval(e.Row.DataItem, "MallPrice").ToString();
int num = 0;
Int32.TryParse(n, out num);
decimal MallPrice = Convert.ToDecimal(price);
totalCount += num * MallPrice;
e.Row.Cells[4].Text = (num * MallPrice).ToString();
}
if (e.Row.RowType == DataControlRowType.Footer)
{
e.Row.Cells[0].Text = "<b>总计:</b><span id='AllCount'>" + totalCount.ToString() + "</span>";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script type="text/javascript">
function jia(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
num = tr.cells[3].getElementsByTagName("input")[0];
var t = parseInt(num.value, 10);
if (isNaN(t)) num.value = 0;
else num.value = t + 1;
countRow(tr)
}
function jian(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
num = tr.cells[3].getElementsByTagName("input")[0];
var t = parseInt(num.value, 10);
if (isNaN(t)) num.value = 0;
else {
if (t < 1) return;
num.value = t - 1;
}
countRow(tr)
}
function bian(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
countRow(tr)
} function countRow(row) {
price = parseFloat(row.cells[2].innerHTML);
if (isNaN(price)) {
row.cells[4].innerHTML = "0"
return;
}
num = row.cells[3].getElementsByTagName("input")[0];
t = parseInt(num.value, 10);
if (isNaN(t)) t = 0;
row.cells[4].innerHTML = roundPrice(price * t);
CountAll();
}
function CountAll() {
var total = 0;
table = document.getElementById('<%=GridView1.ClientID %>');
if (table.rows.length < 3) return;
for (i = 1; i < table.rows.length - 1; i++) {
p = parseFloat(table.rows[i].cells[4].innerHTML);
if (isNaN(p)) p = 0;
total += p;
}
document.getElementById('AllCount').innerHTML = roundPrice(total);
} function roundPrice(x) {
return Math.round(x * 100) / 100;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductCode"
ShowFooter="true" OnRowCreated="GridView1_RowCreated" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:BoundField DataField="ProductCode" HeaderText="商品编号">
<HeaderStyle BorderColor="#CCCCCC" />
</asp:BoundField>
<asp:HyperLinkField DataNavigateUrlFields="ProductCode" DataNavigateUrlFormatString="Read.aspx?id={0}"
DataTextField="ProductName" HeaderText="商品名称" Target="_parent" />
<asp:TemplateField HeaderText="价格">
<ItemTemplate>
<%#Eval("MallPrice") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="商品数量" ControlStyle-CssClass="No">
<ItemTemplate>
<a href="#" onclick="jian(this);return false;">-</a><input type="text" value='<%#Eval("Num")%>'
onchange="bian(this)" /><a href="#" onclick="jia(this);return false;">+</a>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="总计">
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="操作" ShowDeleteButton="True" />
</Columns>
</asp:GridView>
</form>
</body>
</html>
void BindShopCart()
{
if (Session["Cart"] == null)
{
this.ImageButton1.Visible = false;
this.Label1.Text = "您还没有购买任何产品!";
}
else
{
cartTable = (DataTable)Session["Cart"];
if (cartTable.Rows.Count == 0)
{
this.Label1.Visible = true;
this.Label1.Text = "您的购物车上还没有装东西!";
this.ImageButton1.Visible = false;
this.GridView1.Visible = false; this.TotalPrice.Text = "0.00";
}
else
{
this.Label1.Visible = false;
this.ImageButton1.Visible = true;
this.GridView1.Visible = true;
//创建一个数据表
cart = new DataTable(); DataColumn c1 = new DataColumn("ProductCode");
DataColumn c2 = new DataColumn("ProImage");
DataColumn c3 = new DataColumn("ProductName");
DataColumn c4 = new DataColumn("MallPrice");
DataColumn c5 = new DataColumn("Intergral");
DataColumn c6 = new DataColumn("Num");
//把每行的数据添加到数据表中
cart.Columns.Add(c1);
cart.Columns.Add(c2);
cart.Columns.Add(c3);
cart.Columns.Add(c4);
cart.Columns.Add(c5);
cart.Columns.Add(c6); //int i = 1;商品在购物车上的序号
int Intergral = 0;
float price;//商品单价
int num;//商品数量
float TPrice = 0;//商品总价
float total = 0;//商品总数
//创建数据行 执行
DataRow row;
foreach (DataRow dr in cartTable.Rows)
{
//获取图片
int id = Convert.ToInt32(dr["ProductCode"].ToString());
string sql = string.Format("select ProImage from MarketProduct where id='{0}'", id);
string flag = Farm.DBUtility.DbHelperSQL.GetSingle(sql).ToString();
//创建一个新行
row = cart.NewRow();
row["ProductCode"] = dr["ProductCode"];
row["ProImage"] = flag;
row["ProductName"] = dr["ProductName"];
row["MallPrice"] = dr["MallPrice"];
row["Intergral"] = Intergral;
row["Num"] = dr["Num"];
//用户计算产品数
num = int.Parse(dr["Num"].ToString());
price = float.Parse(dr["MallPrice"].ToString());
//把创建的行添加到表中 cart.Rows.Add(row); TPrice += num * price;
total += num; //显示标签
this.TotalPrice.Text = TPrice.ToString(); this.GridView1.Visible = true;
this.GridView1.DataSource = cart.DefaultView;
this.GridView1.DataBind(); }
}
}
}前台<table>
<tbody>
<tr class="biao">
<td>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataKeyNames="ProductCode" Width="1052px"
onrowdeleting="GridView1_RowDeleting" CssClass="No"
onrowdatabound="GridView1_RowDataBound"
onrowcreated="GridView1_RowCreated">
<Columns>
<asp:BoundField DataField="ProductCode" HeaderText="商品编号" >
</asp:BoundField>
<asp:ImageField DataAlternateTextField="ProImage" DataImageUrlField="ProImage"
DataImageUrlFormatString="../UploadFile/img/{0}" HeaderText="商品图片">
</asp:ImageField>
<asp:BoundField DataField="ProductName" HeaderText="商品名称" />
<asp:TemplateField HeaderText="价格">
<ItemTemplate>
<input type="text" style="border:none" id="MallPrice" value='<%#Eval("MallPrice") %>' /></span>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Intergral" HeaderText="赠送积分" />
<asp:TemplateField HeaderText="商品数量" >
<ItemTemplate>
<a href="#" onclick="jian(this);return false;">-</a>
<input type="text" id="num" value='<%#Eval("Num")%>' onchange="bian()" />
<a href="#" onclick="jia(this);return false;">+</a>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="删除次商品" ShowDeleteButton="True" >
<ControlStyle BorderWidth="0px" Width="40px" />
</asp:CommandField>
</Columns>
</asp:GridView>
</td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan="6">
<asp:Label ID="Label1" runat="server" ></asp:Label>
商品总金额:
<span>¥<asp:Label ID="TotalPrice"
runat="server" ></asp:Label></span>元</td>
</tr>
麻烦给看一下
onchange="bian()" />这些照我的改
<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server"> protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{ System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add(new System.Data.DataColumn("ProductCode", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("ProductName", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("MallPrice", typeof(System.Decimal)));
dt.Columns.Add(new System.Data.DataColumn("Num", typeof(System.Int32)));
dt.Columns.Add(new System.Data.DataColumn("Intergral", typeof(System.Int32)));
dt.Columns.Add(new System.Data.DataColumn("ProImage", typeof(System.String))); System.Random rd = new System.Random(Environment.TickCount); ; for (int i = 0; i < 8; i++)
{
dr = dt.NewRow();
dr[0] = "孟" + i.ToString();
dr[1] = "孟孟" + i.ToString();
dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
dr[3] = rd.Next(9999);
dr[4] = i;
dr[5] = "http://dotnet.aspx.cc/Images/meng.gif";
dt.Rows.Add(dr);
}
GridView1.DataSource = dt;
GridView1.DataBind();
TotalPrice.Text = totalCount.ToString();
}
}
decimal totalCount = 0;
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
String n = DataBinder.Eval(e.Row.DataItem, "Num").ToString();
String price = DataBinder.Eval(e.Row.DataItem, "MallPrice").ToString();
int num = 0;
Int32.TryParse(n, out num);
decimal MallPrice = Convert.ToDecimal(price);
totalCount += num * MallPrice;
e.Row.Cells[6].Text = (num * MallPrice).ToString();
}
} protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Response.Write("执行SQL DELETE ProductCode=" + GridView1.DataKeys[e.RowIndex].Value.ToString());
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script type="text/javascript">
function jia(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
num = tr.cells[5].getElementsByTagName("input")[0];
var t = parseInt(num.value, 10);
if (isNaN(t)) num.value = 0;
else num.value = t + 1;
countRow(tr)
}
function jian(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
num = tr.cells[5].getElementsByTagName("input")[0];
var t = parseInt(num.value, 10);
if (isNaN(t)) num.value = 0;
else {
if (t < 1) return;
num.value = t - 1;
}
countRow(tr)
}
function bian(ele) {
tr = ele.parentNode;
while (tr.nodeType != 1 || tr.tagName != "TR") tr = tr.parentNode;
countRow(tr)
} function countRow(row) {
price = parseFloat(row.cells[3].innerHTML);
if (isNaN(price)) {
row.cells[6].innerHTML = "0"
return;
}
num = row.cells[5].getElementsByTagName("input")[0];
t = parseInt(num.value, 10);
if (isNaN(t)) t = 0;
row.cells[6].innerHTML = roundPrice(price * t);
CountAll();
}
function CountAll() {
var total = 0;
table = document.getElementById('<%=GridView1.ClientID %>');
if (table.rows.length < 3) return;
for (i = 1; i < table.rows.length; i++) {
p = parseFloat(table.rows[i].cells[6].innerHTML);
if (isNaN(p)) p = 0;
total += p;
}
document.getElementById('<%=TotalPrice.ClientID %>').innerHTML = roundPrice(total);
} function roundPrice(x) {
return Math.round(x * 100) / 100;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<table>
<tbody>
<tr class="biao"><td>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductCode"
Width="1052px" CssClass="No" OnRowDataBound="GridView1_RowDataBound" OnRowDeleting="GridView1_RowDeleting">
<Columns>
<asp:BoundField DataField="ProductCode" HeaderText="商品编号"></asp:BoundField>
<asp:ImageField DataAlternateTextField="ProImage" DataImageUrlField="ProImage" HeaderText="商品图片">
</asp:ImageField>
<asp:BoundField DataField="ProductName" HeaderText="商品名称" />
<asp:TemplateField HeaderText="价格">
<ItemTemplate>
<%#Eval("MallPrice") %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Intergral" HeaderText="赠送积分" />
<asp:TemplateField HeaderText="商品数量">
<ItemTemplate>
<a href="#" onclick="jian(this);return false;">-</a>
<input type="text" id="num" value='<%#Eval("Num")%>' onchange="bian(this)" />
<a href="#" onclick="jia(this);return false;">+</a>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="小计">
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="删除次商品" ShowDeleteButton="True">
<ControlStyle BorderWidth="0px" Width="40px" />
</asp:CommandField>
</Columns>
</asp:GridView>
</td></tr>
</tbody>
<tfoot>
<tr><td colspan="6">
<asp:Label ID="Label1" runat="server"></asp:Label>
商品总金额: <span>¥<asp:Label ID="TotalPrice" runat="server"></asp:Label></span>元</td>
</tr>
</table>
</form>
</body>
</html>
row[x].cells[y].innerHTMLrows.length这些红色字含义,不要乱写,乱套!!