大家好，我需要在此建议书上寻求帮助，我正在尝试将其添加到我的网站中，这是代码. [英] Hi all, I need some help on this Recommendation i'm trying to add to my web site, here is the code.

问题描述

我遇到此错误的部分是:

The part I''m getting this error on is:

// fill shopping cart controls with data
    private void PopulateControls()
    {
        // Display product recommendations
        recommendations.LoadCartRecommendations();
    }

错误是:名称建议在当前上下文中不存在.

The error is: The name recommendations does not excist in the current context.

推荐答案

很明显，尚未创建推荐对象或您尚未为您的项目添加必需的引用.

Well obviously the recommendations object has not been created or you have not added a required reference to your project.

感谢您回答Mark.我是ASP.NET和C#的新手，并且正在关注本书，因此我不确定它在哪里缺少此建议.

这是Recommendion Web控件的代码:

控制

Thanks for you answer Mark. I''m new to ASP.NET and C#, and I''m following this Book so I''m not sure where it''s missing this recommendtion.

This is the code for the Recommendion Web control:

Control

<uc1:productrecommendations id="recommendations" runat="server" xmlns:uc1="#unknown" />

using System;
using System.Data;

public partial class UserControls_ProductRecommendations : System.Web.UI.UserControl
{
    public void LoadProductRecommendations(string productId)
    {
        // display product recommendations
        DataTable table = CatalogAccess.GetRecommendations(productId);
        if (table.Rows.Count > 0)
        {
            list.ShowHeader = true;
            list.DataSource = table;
            list.DataBind();
        }
    }

    public void LoadCartRecommendations()
    {
        // display product recommendations
        DataTable table = ShoppingCartAccess.GetRecommendations();
        if (table.Rows.Count > 0)
        {
            list.ShowHeader = true;
            list.DataSource = table;
            list.DataBind();
        }
    }
}

HTML:

The HTML:

<![CDATA[<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ProductRecommendations.ascx.cs" Inherits="UserControls_ProductRecommendations" %>]]>

<asp:datalist id="list" runat="server" showheader="false" xmlns:asp="#unknown">
  <HeaderStyle CssClass=" RecommendationsHead " />
  <HeaderTemplate>
    We also recommend:
  </HeaderTemplate>  
  <itemtemplate>
    <a class="RecommendationLabel" href="<%# Link.ToProduct(Eval("ProductID").ToString())%>">
      <%# Eval("Name") %>
    </a> 
    <%# Eval("Description") %>
  </itemtemplate>
</asp:datalist>

数据库代码:

Code for the Database:

// gets product recommendations
public static DataTable GetRecommendations(string productId)
{
// get a configured DbCommand object
DbCommand comm = GenericDataAccess.CreateCommand();
// set the stored procedure name
comm.CommandText = "CatalogGetProductRecommendations";
// create a new parameter
DbParameter param = comm.CreateParameter();
param.ParameterName = "@ProductID";
param.Value = productId;
param.DbType = DbType.Int32;
comm.Parameters.Add(param);
// create a new parameter
param = comm.CreateParameter();
param.ParameterName = "@DescriptionLength";
param.Value = BalloonShopConfiguration.ProductDescriptionLength;
param.DbType = DbType.Int32;
comm.Parameters.Add(param);
// execute the stored procedure
return GenericDataAccess.ExecuteSelectCommand(comm);
}

购物车代码推荐:

Code for the Shopping cart Recommendation:

// gets product recommendations for the shopping cart
  public static DataTable GetRecommendations()
  {
    // get a configured DbCommand object
    DbCommand comm = GenericDataAccess.CreateCommand();
    // set the stored procedure name
    comm.CommandText = "CatalogGetCartRecommendations";
    // create a new parameter
    DbParameter param = comm.CreateParameter();
    param.ParameterName = "@CartID";
    param.Value = shoppingCartId;
    param.DbType = DbType.String;
    param.Size = 36;
    comm.Parameters.Add(param);
    // create a new parameter
    param = comm.CreateParameter();
    param.ParameterName = "@DescriptionLength";
    param.Value = PoshandDanglesConfiguration.ProductDescriptionLength;
    param.DbType = DbType.Int32;
    comm.Parameters.Add(param);
    // execute the stored procedure
    return GenericDataAccess.ExecuteSelectCommand(comm);

Product.aspx的代码

Code for the Product.aspx

// Fill the control with data
private void PopulateControls(ProductDetails pd)
{
// Display product recommendations
string productId = pd.ProductID.ToString();
recommendations.LoadProductRecommendations(productId);

谢谢！

thanks!

这篇关于大家好，我需要在此建议书上寻求帮助，我正在尝试将其添加到我的网站中，这是代码.的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！