xamarin forms not recognising x:name"lvwPrice"-CodePudding

i've been breaking my head on this for a while now and i can't seem to figure out why it keeps saying "lvwPrice does not exist in this current context"

My Xaml code:

<ContentPage
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    x:Class="ProjectCrypto.Views.Overview">
    <ContentPage.Content>
        <ListView x:Name="lvwOverview" RowHeight="100">
            <ListView.ItemTemplate ItemsSource="{Binding Coin}">
                <DataTemplate>
                    <ViewCell>
                        <Grid >
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="100"/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                            </Grid.ColumnDefinitions>
                            
                            <Label Grid.Column="1" Text="{Binding Key}" VerticalOptions="Start" />
                            <Label x:Name="lvwPrice" Grid.Column="2" Text="test" VerticalOptions="Center"/>
                            <Label Grid.Column="3" Text=">" HorizontalOptions="End" Margin="0,0,16,0" VerticalOptions="Center" TextColor="Black" FontAttributes="Bold"/>
                            
                        </Grid>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </ContentPage.Content>
</ContentPage>

My xaml.cs code:

using System.Collections.Generic;
using ProjectCrypto.Repositories;
using Xamarin.Forms;

namespace ProjectCrypto.Views
{
    public partial class Overview : ContentPage
    {
        public Overview()
        {
            InitializeComponent();
            LoadData();
        }
        private async void LoadData()
        {
            lvwOverview.ItemsSource = await CryptoRepository.GetCoins();

            var Coin = await CryptoRepository.GetCoins();

            foreach (var item in Coin)
            {
                lvwPrice.ItemsSource = await CryptoRepository.GetPrice(item.Key);
            }
            
        }
    }
}

Is anyone able to help me out on why it doesnt want to detect lvwPrice?

CodePudding user response：

To be able to access templated elements by name and by whatever way you like, create a custom view that will serve You as a cell. And in the cell's code-behind you will be able to access everything by name. Your initial parent list will now look like:

     <ListView x:Name="lvwOverview" RowHeight="100">
        <ListView.ItemTemplate ItemsSource="{Binding Coin}">
              <DataTemplate>
                 <user:MyViewCell/>
              </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>

Your brand new cell will look like:

XAML:

  <?xml version="1.0" encoding="UTF-8"?>
               <ViewCell>
                    <Grid >
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="100"/>
                            <ColumnDefinition/>
                            <ColumnDefinition/>
                        </Grid.ColumnDefinitions>
                        
                        <Label Grid.Column="1" Text="{Binding Key}" VerticalOptions="Start" />
                        <Label x:Name="lvwPrice" Grid.Column="2" Text="test" VerticalOptions="Center"/>
                        <Label Grid.Column="3" Text=">" HorizontalOptions="End" Margin="0,0,16,0" VerticalOptions="Center" TextColor="Black" FontAttributes="Bold"/>
                        
                    </Grid>
                </ViewCell>

Good Luck :)