I've tried searching around here and on microsoft docs but I can't find a solution to my specific query, as mainly I've seen posts about how to do things on itemclick rather than retrieve data.
I'm currently using an API, which sends a JSON request that I deserialize into 2 partial classes, where I use a foreach loop to add new items to the ListView. You can see the classes here:
public partial class GameListObject
{
[JsonPropertyName("id")]
public long GameID { get; set; }
[JsonPropertyName("name")]
public string GameName { get; set; }
[JsonPropertyName("release_dates")]
public ObservableCollection<ReleaseDate> ReleaseDates { get; set; }
}
public partial class ReleaseDate
{
[JsonPropertyName("id")]
public long Id { get; set; }
[JsonPropertyName("human")]
public string Human { get; set; }
}
And the request, deserialization and adding to the ListView here:
//On search box content change
private async void gamehub_search_TextChanged(object sender, TextChangedEventArgs e)
{
var SearchQuery = gamehub_search.Text;
try
{
// Construct the HttpClient and Uri
HttpClient httpClient = new HttpClient();
Uri uri = new Uri("https://api.igdb.com/v4/games");
httpClient.DefaultRequestHeaders.Add("Client-ID", App.GlobalClientidIGDB);
httpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + App.GlobalAccessIGDB);
//Debug.WriteLine("Request Headers: ");
// Construct the JSON to post
HttpStringContent content = new HttpStringContent($"search \"{SearchQuery}\"; fields name,release_dates.human;");
Debug.WriteLine("Request Contents: " + content);
// Post the JSON and wait for a response
HttpResponseMessage httpResponseMessage = await httpClient.PostAsync(
uri,
content);
// Make sure the post succeeded, and write out the response
httpResponseMessage.EnsureSuccessStatusCode();
var httpResponseBody = await httpResponseMessage.Content.ReadAsStringAsync();
Debug.WriteLine("Request Response: " + httpResponseBody);
//Deserialise the return output into game id, game name and release date
List<GameListObject> gamelistobjects = JsonSerializer.Deserialize<List<GameListObject>>(httpResponseBody);
ObservableCollection<GameListObject> dataList = new ObservableCollection<GameListObject>(gamelistobjects);
ObservableCollection<GameListObject> GameList = new ObservableCollection<GameListObject>();
foreach (var item in dataList)
{
Debug.WriteLine($"id: {item.GameID}");
Debug.WriteLine($"name: {item.GameName}");
GameListObject add = new GameListObject() { GameID = item.GameID, GameName = item.GameName };
GameList.Add(add);
if (item.ReleaseDates != null)
{
foreach (var date in item.ReleaseDates)
{
Debug.WriteLine($"releaseDate: {date.Human}");
}
}
}
gamehub_list.ItemsSource = GameList;
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
Now I have set an gamehub_list_ItemClick method which runs when an item within the ListView is pressed. I would like to retrieve the GameID that's present in that item because I'll need that for another page which the user gets redirected to so that I know what game I must request data for. However, I've tried finding the index of the item and using the member names of the class to retrieve it but I can't seem to get it working.
The ItemClick method currently is:
private void gamehub_list_ItemClick(object sender, ItemClickEventArgs e) //When an item in List View is pressed
{
string clickedItemText = e.ClickedItem.ToString();
Debug.WriteLine("Click Item text: " + clickedItemText);
}
When I tried to get the index of the item, it always returned as -1 and for the current clickedItemText it returns "Click Item text: ReviewR.GameHubs+GameListObject".
My xaml with the ListView:
<ListView x:Name="gamehub_list" SelectionMode="None" IsItemClickEnabled="True" ItemClick="gamehub_list_ItemClick" Margin="30,140,44,30" BorderThickness="5" BorderBrush="Black" Background="Gray" RequestedTheme="Dark" Visibility="Collapsed">
<ListView.ItemTemplate>
<DataTemplate>
<Grid>
<StackPanel>
<TextBlock Text="{Binding GameID}"></TextBlock>
<TextBlock Text="{Binding GameName}"></TextBlock>
</StackPanel>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Click Item text: ReviewR.GameHubs+GameListObject
The problem is ClickedItem
is object type, if you pass it to string directly, it will return text like you mentioned above.
For this scenario, you need unbox ClickedItem
.
var clickedItem = e.ClickedItem as GameListObject
Debug.WriteLine("Click Item text: " + clickedItem.GameID );