display picker when clicking in imagebutton xamarin - xaml

Question

i want to display a picker (or list) when i click in my imageButton but it didn't work, but when i create only a picker , it worked.
Xaml
<StackLayout Orientation="Horizontal" x:Name="stacklayout">
<Entry Placeholder="préciser l'entité correspondante"
ClearButtonVisibility="WhileEditing" x:Name="entit"/>
<ImageButton Source="list.png" WidthRequest="30" HeightRequest="30" x:Name="listEntité" Clicked="listEntité_Clicked"/>
Xaml.cs
private void listEntité_Clicked(object sender, EventArgs e)
{
Picker p = new Picker();
HttpClient httpClient = new HttpClient();
httpClient.BaseAddress = new Uri("http://192.168.1.3:3000/api/adepApi/GetCurrencyLists");
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response = await httpClient.GetAsync("http://192.168.1.3:3000/api/adepApi/GetCurrencyLists");
var content = await response.Content.ReadAsStringAsync();
ResponseDataD EL = JsonConvert.DeserializeObject<ResponseDataD>(content);
p.ItemsSource= EL.Data.DeviseList;
stacklayout.Children.Add(p.ItemsSource);
}
class DeviseModel
public class DeviseModel
{
public class DeviseL
{
// public string devis;
[JsonProperty("Label")]
public string Devis { get; set; }
[JsonProperty("Value")]
public int id { get; set; }
}
public class ResponseDataD
{
public RootModelDevise Data;
}
public class RootModelDevise : INotifyPropertyChanged
{
List<DeviseL> deviseList;
[JsonProperty("list")]
public List<DeviseL> DeviseList
{
get { return deviseList; }
set
{
if (deviseList != value)
{
deviseList = value;
OnPropertyChanged();
}
}
}
DeviseL itemDevise;
public DeviseL ItemDevise
{
get { return itemDevise; }
set
{
if (itemDevise != value)
{
itemDevise = value;
OnPropertyChanged();
}
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = "")
{
var changed = PropertyChanged;
if (changed == null)
return;
changed.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}}
i have an error in the line
stacklayout.Children.Add(p.ItemsSource);
under p.itemsSource :unable to convert from 'System.Collections.Ilist' to 'Xamarin.Forms.View'

Answer 1

i have tried to add picker by imageButton click event , but nothing appears.
Firstly, please confirm that the EL.Data.DeviseList have list value, you have list binding to Picker, then adding picker to current contentPage.
public partial class Page16 : ContentPage
{
private List<string> list;
public Page16()
{
InitializeComponent();
list = new List<string>();
list.Add("test 1");
list.Add("test 2");
list.Add("test 3");
list.Add("test 4");
}
private void imagebutton1_Clicked(object sender, EventArgs e)
{
Picker p = new Picker();
p.ItemsSource = list;
stacklayout.Children.Add(p);
}
}
<StackLayout x:Name="stacklayout">
<ImageButton
x:Name="imagebutton1"
Clicked="imagebutton1_Clicked"
HeightRequest="30"
Source="plu3.png"
WidthRequest="30" />
</StackLayout>
Update:
private void imagebutton1_Clicked(object sender, EventArgs e)
{
Picker p = new Picker();
p.SelectedIndexChanged += P_SelectedIndexChanged;
p.ItemsSource = devs;
p.ItemDisplayBinding = new Binding("Devis");
stacklayout.Children.Add(p);
}
private void P_SelectedIndexChanged(object sender, EventArgs e)
{
Picker p = sender as Picker;
DeviseL selectitem = p.SelectedItem as DeviseL;
entit.Text =selectitem.Devis;
}