Xamarin rest api

Question

Binding does not work in my code. what's wrong in this code?

HttpClient client = new HttpClient();
var response = await client.GetAsync(string.Format("uri link"));
string jsonstring = await response.Content.ReadAsStringAsync();
RootObject item = JsonConvert.DeserializeObject<RootObject>(jsonstring);
titles.ItemsSource =item.ToString();

XAML code

<ListView x:Name="titles" HasUnevenRows="False" >
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <ViewCell.View>
                    <StackLayout Orientation="Horizontal">
                           <Label Text="{Binding note}"/>
                       </StackLayout>
                </ViewCell.View>
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

class object:

public class Result
{
    public string note { get; set; }
}
public class Response
{
    public List<Result> results { get; set; }
}
public class RootObject
{
    public Response response { get; set; }
}

@HéctorManuelMartinezDurán i could not bind with object . when i compile the code the list view as empty so please help how can solve thiz — Muthukumar c, Mar 30 '18 at 17:58
ItemsSource should be an IEnumerable, you are just assigning it a string value — Jason, Mar 30 '18 at 18:03
and, your binding path is "note" put there is no property named note in your model — Jason, Mar 30 '18 at 18:04
@Jason you are setting just a string, you have to set IEnumerable , if you set a simple list of string you don't need a item template, but if you have a list of object you have to create a template for the cell and set the properties for each control — Muthukumar c, Mar 30 '18 at 18:41
you are not setting a list of anything, you are just assigning a single string value: titles.ItemsSource =item.ToString(); — Jason, Mar 30 '18 at 18:46

score 1 · Accepted Answer · answered Mar 31 '18 at 20:31

1

you bind the lable to the note, but you set the titles.ItemsSource to the RootObject. the RootObject class doesn't have note. note is in Result class.

and you can't set the itemsource like that.

I suggest you to do this

var listItem = JsonConvert.DeserializeObject<List<Result>>(jsonstring);
titles.ItemsSource = l;

answered Mar 31 '18 at 20:31

Sajjad Abedi

122
2
9

if i am going to try this code it shows some error :-- Cannot deserialize the current json object. To fix this error either change the json or json array. whats wrong in this code. – Muthukumar c Apr 02 '18 at 17:30
I think its because your jsonstring contains more than one instance of Result class. I mean it has more than one note property. Am I right? – Sajjad Abedi Apr 02 '18 at 19:16
Hi @MSjjD jsonnstring : { "response": { "results": [ { "Created By": "non_authenticated_user_live", "Created Date": "2018-03-05T08:34:04.631Z", "Modified Date": "2018-03-05T08:34:04.677Z", "note": "gmmrng", "_id": "1520238844627x475879674311727300", "_type": "custom.note" } – Muthukumar c Apr 03 '18 at 14:26
your jsonnstring in not complete. – Sajjad Abedi Apr 05 '18 at 09:19

score 1 · Answer 2 · edited Jun 13 '18 at 11:32

1

According to me are upto:

RootObject item = JsonConvert.DeserializeObject<RootObject>(jsonstring);

and can you try this code also after the above line:

titles.ItemsSource =item.Responce. results;

edited Jun 13 '18 at 11:32

Rence

2,900
2
23
40

answered Jun 13 '18 at 09:47

SHUBHAM SHARMA

31
6

Xamarin rest api

2 Answers2