Can't find GridView in ASP_问答_开发者_运维开发者技术经验分享

开发者 https://www.devze.com 2023-02-20 13:32 出处：网络

I am brand new to asp and downloaded some example code of a shopping cart. When I created a new project in Visual Studio, added all the files in and tried to compile I got the following error.

Error 1 The name 'gvShoppingCart' does not exist in the current context c:\users\slaphappysmoker\documents\visual studio 2010\Projects\Shopcart\Shopcart\ViewCart.aspx.cs 21 3 Shopcart

However I can see where gvShoppingCart gets defined in the ViewCart.aspx file.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ViewCart.aspx.cs" Inherits="ViewCart" %>

<!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>Shopping Cart</title>
    <link href="Styles/StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
        <div class="container">
            <h1>Shopping Cart</h1>
            <a href="Default.aspx">&lt; Back to Products</a>
            <br /><br />
            <asp:GridView runat="server" ID="gvShoppingCart" AutoGenerateColumns="false" EmptyDataText="There is nothing in your shopping cart." GridLines="None" Width="100%" CellPadding="5" ShowFooter="true" DataKeyNames="ProductId" OnRowDataBound="gvShoppingCart_RowDataBound" OnRowCommand="gvShoppingCart_RowCommand">
                <HeaderStyle HorizontalAlign="Left" BackColor="#3D7169" ForeColor="#FFFFFF" />
                <FooterStyle HorizontalAlign="Right" BackColor="#6C6B66" ForeColor="#FFFFFF" />
                <AlternatingRowStyle BackColor="#F8F8F8" />
                <Columns>
                    <asp:BoundField DataField="Description" HeaderText="Description" />
                    <asp:TemplateField HeaderText="Quantity">
                        <ItemTemplate>
                            <asp:TextBox runat="server" ID="txtQuantity" Columns="5" Text='<%# Eval("Quantity") %>'></asp:TextBox><br />
                            <asp:LinkButton runat="server" ID="btnRemove" Text="Remove" CommandName="Remove" CommandArgument='<%# Eval("ProductId") %>' style="font-size:12px;"></asp:LinkButton>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:BoundField DataField="UnitPrice" HeaderText="Price" ItemStyle-HorizontalAlign="Right" HeaderStyle-HorizontalAlign="Right" DataFormatString="{0:C}" />
                    <asp:BoundField DataField="TotalPrice" HeaderText="Total" ItemStyle-HorizontalAlign="Right" HeaderStyle-HorizontalAlign="Right" DataFormatString="{0:C}" />
                </Columns>
            </asp:GridView>
            <br />
            <asp:Button runat="server" ID="btnUpdateCart" Text="Update Cart" OnClick="btnUpdateCart_Click" />
        </div>
    </form>
</body>
</html>

Here is the code that is calling the GridView in the ViewCart.aspx.cs file:

protected void BindData() {
    // Let's give the data to the GridView and let it work!
    // The GridView will t开发者_开发技巧ake our cart items one by one and use the properties
    // that we declared as column names (DataFields)
    gvShoppingCart.DataSource = ShoppingCart.Instance.Items;
gvShoppingCart.DataBind();
}

How can I get the ViewCart.aspx.cs code file to recognize the ViewCart.aspx and the GridView contained within?

Edit: Added the function that calls the gridview.

Try to make sure that the gridview has a reference in the designer.cs file

protected global :: System.Web.UI.WebControls.GridView gvShoppingCart;