C# datagridview 数据绑定错误！

Question

DataTable dt = new DataTable();             
            if (ht["result_list"] is ArrayList)//ht["result_list"] 为查询出的数据；
            {
                ArrayList al = (ArrayList)ht["result_list"];
               
               //MessageBox.Show("11-"+al[2].ToString()+"-111111");
                MessageBox.Show("22-" + al.IndexOf(2).ToString() + "-111111");
                //MessageBox.Show("33-" + al.IndexOf(3).ToString() + "-111111");
                //MessageBox.Show("44-" + al.IndexOf(4).ToString() + "-111111");
                if (al == null)
                {
                    MessageBox.Show("空值");
                }
                else
                    MessageBox.Show("油渍。");
                dt.Columns.Add("ColumnNo");
                dt.Columns.Add("ColumnAlarmId");
                dt.Columns.Add("ColumnAlarmCode");
                dt.Columns.Add("ColumnAlarmMessage");
                dt.Columns.Add("ColumnAlarmTime");                int i = 1;
                foreach (Hashtable ht2 in al)
                {
                    System.Data.DataRow dr = dt.NewRow();                                        string id = CFMUtil.getHtValue(ht2, "alarm_id");
                    string code = CFMUtil.getHtValue(ht2, "alarm_code");
                    string message = CFMUtil.getHtValue(ht2, "alarm_message");
                    string time = CFMUtil.getHtValue(ht2, "alarm_start_time");
                                      //
                    MessageBox.Show(i.ToString());
                    MessageBox.Show(id);
                    MessageBox.Show(code);
                    MessageBox.Show(message);
                    MessageBox.Show(time);
                    //上面的数据，验证是从数据库查询出，是正确的。                    dr["ColumnNo"] = i;
                    dr["ColumnAlarmId"] = id;
                    dr["ColumnAlarmCode"] = code;
                    dr["ColumnAlarmMessage"] = message;
                    dr["ColumnAlarmTime"] = time;                    i=i + 1;
    
                }
                dataGridView1.DataSource = dt;
                int b=dataGridView1.RowCount;
                MessageBox.Show("kkkkkkkkkkkkkkkkkkkk"+b.ToString());我查询出来的list放进datagridview内，如上代码，有什么不正确的地方，造成未绑定成功，在winform中，‘属性’未做任何设定。===========================================================

Answer 1

 //更新GradView
        private void upDataGradView(string commStr,DataGridView view)
        {
        
            comm.CommandText = commStr;
            conn.Open();
            try
            {
                read = comm.ExecuteReader();
                view.DataSource = CreateData(read);
            }
            catch (Exception er)
            {
                conn.Close(); throw er;
            }
            conn.Close();
            
        }
        //建造数据源
        private DataTable CreateData(SqlDataReader data)
        {
            DataTable table = new DataTable();
            DataColumn col;
            DataRow row;
            //创建表头
            for (int i = 0; i < data.FieldCount; i++)
            {
                col = new DataColumn();
                col.ColumnName = data.GetName(i);
                col.DataType = data.GetFieldType(i);
                table.Columns.Add(col);
            }
            //创建Table
            while (data.Read())
            {
                row = table.NewRow();
                for (int i = 0; i < data.FieldCount; i++)
                {
                    if (data.GetValue(i) == null) row[i] = 0;
                    else
                    {
                        row[i] = data.GetValue(i).ToString().Trim();
                    }
                }
                table.Rows.Add(row);
            }
            data.Close();
            return table;
        }

Answer 2

comm
conn
read 
需要自己初始化一下

Answer 3

i=i + 1;
//后面加
dt.Rows.Add(dr);