如何使用FireSharp将数据从Firebase添加到DataGridView [英] How to add data from Firebase to DataGridView using FireSharp

问题描述

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，它正在将所有内容都检索到同一行中，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。

I just want to retrieve data from a Firebase to DataGridView. The code I have is retrieving data already, however, it's retrieving everything to the same row instead of creating a new one. I'm a beginner in coding, so I really need help with that.

我在网上阅读到Firebase不会计算数据，因此需要创建一个计数器，因此每次我添加或删除数据时，都需要更新。我做到了，它正在起作用。我创建了一种加载数据的方法。

I read online that Firebase doesn't "Count" data, so it'd be needed to create a counter, so each time I add or delete data, an update would be needed. I did it and it's working. I created a method to load the data.

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（dataTable），也有一个DataGridView列（ID，名称，图像，价格，折扣，描述），与分配给.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]。

OBS: A DataTable exists already(dataTable), there's a DataGridView too which has columns(ID,Name, Image, Price, Discount, Description), which match the number and order given to the .Cells[x]. When the Form loads, dtGProductsList.DataSource = dataTable; I tried replacing [0] for [i].

我希望将要检索的数据设置为新行，而不是相同的行，并且不要跳过行。我很抱歉，如果它太简单了，但我看不到任何出路。

I expect the data that is beeing retrieved to be set to a new row and not to the same, and to not skip rows. I'm sorry if it's too simple, but I can't see a way out.

推荐答案

我遇到了同样的问题，这里是亩解决方案：

I Faced the same problem and here is mu solution :

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); 

}

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