如何使用FireSharp将数据从Firebase添加到DataGridView

时间:2019-07-12 19:39:47

标签: c# firebase-realtime-database datagridview fire-sharp

我只想从Firebase检索数据到DataGridView。我拥有的代码已经在检索数据,但是,它正在将所有内容检索到同一行中,而不是创建一个新行。我是编码的初学者,所以我真的需要帮助。

我在线阅读到Firebase不会“计数”数据,因此需要创建一个计数器,因此每次添加或删除数据时,都需要进行更新。我做到了,它正在工作。我创建了一种加载数据的方法。

private async Task firebaseData()
{
 int i = 0;

 FirebaseResponse firebaseResponse = await client.GetAsync("Counter/node");
 Counter_class counter = firebaseResponse.ResultAs<Counter_class>();
 int foodCount = Convert.ToInt32(counter.food_count);

 while (true)
 {
  if (i == foodCount)
  {
   break;
  }
 i++;
 try
  {

   FirebaseResponse response2 = await client.GetAsync("Foods/0" + i);
   Foods foods = response2.ResultAs<Foods>();


   this.dtGProductsList.Rows[0].Cells[0].Value = foods.menuId;
   this.dtGProductsList.Rows[0].Cells[1].Value = foods.name;
   this.dtGProductsList.Rows[0].Cells[2].Value = foods.image;
   this.dtGProductsList.Rows[0].Cells[3].Value = foods.price;
   this.dtGProductsList.Rows[0].Cells[4].Value = foods.discount;
   this.dtGProductsList.Rows[0].Cells[5].Value = foods.description;

  }
   catch
   {

   }
 }
MessageBox.Show("Done");
}

OBS:已经有一个DataTable(数据表),还有一个DataGridView,它具有列(ID,名称,图像,价格,折扣,描述),这些列与赋予.Cells [x]的编号和顺序匹配。加载表单时,dtGProductsList.DataSource = dataTable;我尝试将[i]替换为[0]。

我希望将要检索的数据设置为新行而不是相同行,并且不要跳过行。很简单,很抱歉,但我看不到出路。

1 个答案:

答案 0 :(得分:0)

我遇到了同样的问题,这是亩解决方案:

Counter_class  XClass = new Counter_class();                
FirebaseResponse firebaseResponse = await client.GetAsync("Counter/node");
string JsTxt = response.Body;
                if (JsTxt == "null")
                {

                    return ;
                }

 dynamic data = JsonConvert.DeserializeObject<dynamic>(JsTxt);
                var list = new List<XClass >();
                foreach (var itemDynamic in data)
                {
                  list.Add(JsonConvert.DeserializeObject<XClass > 
                  (((JProperty)itemDynamic).Value.ToString()));
                }
             // Now you have a list  you can loop through to put it at any suitable Visual  
            //control 
                foreach ( XClass  _Xcls in list)
                {
Invoke((MethodInvoker)delegate {
                            DataGridViewRow row(DataGridViewRow)dg.Rows[0].Clone();
                            row.Cells[0].Value =_Xdcls...
                            row.Cells[1].Value =Xdcls...
                            row.Cells[2].Value =Xdcls...
                            ......
                            dg.Insert(0, row); 

}