Question

我是Windows手机开发的新手。我遇到了这个问题。我想通过使用绑定 Json 数据在网格内动态创建 textblock 。我的Json数据是：

[
  {"scheme":"SCHEME A","units":1,"amount":2000,"currency":"AED","approved_date":"2014-12-19","lockState":"Locked","id":7497,"withdrawal_request":0},

  {"scheme":"SCHEME A","units":4,"amount":100000,"currency":"INR","approved_date":"2014-12-19","lockState":"Locked","id":7543,"withdrawal_request":0}
]

sample.xaml

 <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,196" RenderTransformOrigin="0.5,0.98">
<Grid>
    <Grid.RowDefinitions>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="35"/>
    <RowDefinition Height="35"/>
    <RowDefinition Height="35"/>
    <RowDefinition Height="35"/>
</Grid.RowDefinitions

<Grid.ColumnDefinitions>
   <ColumnDefinition Width="250"/>
   <ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid>
    <TextBlock  TextWrapping="Wrap" Text="TCN"  Grid.Row="0" Grid.Column="0"  Name="aa" Foreground="Black" FontWeight="Bold" />
    <TextBlock  TextWrapping="Wrap" Text="{binding scheme}"  Grid.Row="0" Grid.Column="1"  Name="aa" Foreground="Black" FontWeight="Bold" />
    <TextBlock  TextWrapping="Wrap" Text="UNIT"  Grid.Row="1" Grid.Column="0"  Name="aa" Foreground="Black" FontWeight="Bold" />
    <TextBlock  TextWrapping="Wrap" Text="{binding unit}"  Grid.Row="0" Grid.Column="1"  Name="aa" Foreground="Black" FontWeight="Bold" />

</Grid>
  </Grid>
  </Grid>

sample.xaml.cs

 {
    var users = JArray.Parse(data.Result.ToString());
    tcnobjects1 = new TcnObjects1 {scheme = users[0]["scheme"].ToString(), units  = users[0]["units"].ToString(), amount = users[0]["amount"].ToString(), currency = users[0]["currency"].ToString(), lockState = users[0]["lockState"].ToString(), id = users[0]["id"].ToString(), withdrawal_request = users[0]["withdrawal_request"].ToString()};
    ContentPanel.DataContext = tcnobjects1;
 }

如何循环网格中的项目？我正在动态获取json数据。使用上面的代码我只能显示Json数组 users [0] 元素。帮我看一下示例代码示例。

Answer 1

在JArray的返回类型中是一个数组，因此您可以获取数组的长度并循环它们，如下所示

 //creating a list for tcnobjects
 List<tcnobjects1> objectsList=new List<tcnobjects1>();

 var users = JArray.Parse(data.Result.ToString());
//looping through the array elements
for (int i = 0; i < users.Length; i++)
{
   tcnobjects1 = new TcnObjects1 {scheme = users[i]["scheme"].ToString(), units  = users[i]["units"].ToString(), amount = users[i]["amount"].ToString(),    currency = users[i]["currency"].ToString(), lockState = users[i]  ["lockState"].ToString(), id = users[i]["id"].ToString(), withdrawal_request =   users[i]["withdrawal_request"].ToString()};
   objectsList.add(tcnobjects1);
}
ContentPanel.DataContext =objectsList

我希望我的回答很有帮助：）

如何使用for循环动态创建网格子元素？

1 个答案: