將超文本插入到數據庫中

Question

你好，我試圖插入一個超文本到數據庫表中。首先我分離所有的單詞，使他們的小寫字母和listbox1列表上的作品正確。

這是我的餐桌單詞;

id(int),word(nvarchar),sid(int),frequency(int),weight(float),f(boolean) by order 

protected void Button1_Click(object sender, EventArgs e) 
     { 
      int id=0; 
      ListBox1.Items.Clear(); 
      string strNew = Request.Form["TextBox1"]; 
      // File.WriteAllText(@"\Users\'uykusuz\Documents\text.txt", strNew); 
      int n = strNew.Split(' ').Length; 

      strNew=strNew.ToLower(); 

      var results = strNew.Split(' ').Where(x => x.Length > 1) 
              .GroupBy(x => x) 
              .Select(x => new { Count = x.Count(), Word = x.Key }) 
              .OrderByDescending(x => x.Count); 

      foreach (var item in results) 
       ListBox1.Items.Add(String.Format("{0} occured {1} times", item.Word, item.Count)); 

      foreach (var item in results) {//here trying to insert word its id and some other informations but for now they can stay null(yes,null allowed for them) 
       id++; 
       SqlCommand cmd = new SqlCommand("insert into word values('" + id + "','" + item.Word.Text + "','0'),'0'),'0'),'0')", con); 
       cmd.ExecuteNonQuery(); 
       con.Close(); 

      } 

     } 

當我按下按鈕時，總是出現此錯誤;

ExecuteNonQuery需要一個開放且可用的Connection。連接的當前狀態將關閉。

EDIT1：

foreach (var item in results) { 
       con.Open(); 
       id++; 
       SqlCommand cmd = new SqlCommand("insert into word values('" + id + "','" + item.Word + "','0','0','0','0')", con); 
       cmd.ExecuteNonQuery(); 
       con.Close(); 

      } 

我已經改變了這樣的，但現在我得到這個錯誤

連接沒有關閉。連接的當前狀態已打開。

Answer 1

嘗試將您的最後幾行代碼更改爲我的示例。每次迭代結果集合時，都關閉了與數據庫的連接。

using (conn){ 
    conn.Open(); 

    foreach (var item in results) {//here trying to insert word its id and some other informations but for now they can stay null(yes,null allowed for them) 
     id++; 
     SqlCommand cmd = new SqlCommand("insert into word values('" + id + "','" + item.Word.Text + "','0'),'0'),'0'),'0')", con); 
     cmd.ExecuteNonQuery(); 
    } 
} 

Answer 2

你必須關閉

using (con){ 
     con.Open(); 

     foreach (var item in results) {//here trying to insert word its id and some other informations but for now they can stay null(yes,null allowed for them) 
      id++; 
      SqlCommand cmd = new SqlCommand("insert into word values('" + id + "','" + item.Word.Text + "','0'),'0'),'0'),'0')", con); 
      cmd.ExecuteNonQuery(); 
     } 
    } 
con.close();