ASP.NET ListView问题

问题描述

晚上，全部

我一直在将数据绑定到列表视图时遇到问题.我花了很多时间尝试将数据库中的数据绑定到列表视图，但收效甚微.

这是我到目前为止的代码:

Evening all,

I have been having a bit of an issue with binding data to a listview. I have spent a fair amount of time trying to bind data from a database to a listview and I have little success.

This is the code I have so far:

private void SetListView()
   {
       this.ListView1.Items.Clear();

       using (SqlCommand cmd = new SqlCommand("SELECT MealType.MealType, Food.FoodName, Food.Calories FROM Day INNER JOIN Diary ON Day.DiaryID = Diary.DiaryID INNER JOIN Meal ON Day.DayID = Meal.DayID INNER JOIN MealFood ON Meal.MealID = MealFood.MealID INNER JOIN Food ON MealFood.FoodID = Food.FoodID INNER JOIN MealType ON Meal.TypeID = MealType.TypeID INNER JOIN Users ON Diary.UserID = Users.UserID WHERE (Users.UserName = @username) AND MealType.MealType = @MealType", conn))
       {
           cmd.Parameters.Add("@username", SqlDbType.VarChar);
           cmd.Parameters["@username"].Value= HttpContext.Current.Session["Username"].ToString();
           cmd.Parameters.Add("@MealType", SqlDbType.VarChar);
           cmd.Parameters["@MealType"].Value = "Breakfast";

           DataSet ds = new DataSet();
           SqlDataAdapter da = new SqlDataAdapter();

           da.SelectCommand = cmd;
           da.Fill(ds);

           if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
           {

               foreach (DataRow dr in ds.Tables[0].Rows)
               {
                   string FoodName = dr["FoodName"].ToString();
                   string MealType = dr["MealType"].ToString();
                   int Calories = Convert.ToInt32(dr["Calories"].ToString());

                   ListViewItem FoodItems = new ListViewItem();

                   FoodItems.SubItems.Add(FoodName);
                   FoodItems.SubItems.Add(MealType);
                   FoodItems.SubItems.Add(Calories);
                   this.ListView1.Items.Add(FoodItems);
               }
           }
       }
   }

在我看来这应该可行，但是我显然在某处出错了.我现在遇到的主要错误是ListViewItem()不是可接受的构造函数，我检查了MSDN，根据网站的默认构造函数应该没问题.

我对哪里出错了感到有些困惑.如果有人可以帮我指出我的不足，我将不胜感激.

谢谢.

Dan

To my eyes this should work but I have obviously gone wrong somewhere. The main error I am getting at the minute is that ListViewItem() is not an acceptable constructor, I checked MSDN and according to the website the default constructor should be fine.

I am just a bit confused where I have gone wrong. If anyone could give me a hand and point out my shortfall I would greatly appreciate it.

Thank you.

Dan

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