Getting Ads and Ad Gallery to ListView RSS

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Last post Aug 16, 2019 12:12 PM by jrahma

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jrahma

Member

23 Points

683 Posts

Getting Ads and Ad Gallery to ListView

Aug 06, 2019 09:44 AM|jrahma|LINK

Hi,

I have below code in my project.

public class HomePageData
{
    public int ad_id { get; set; }
    public static string ad_guid { get; set; }
    public string ad_gallery_guid { get; set; }
    public string user_guid { get; set; }
    public string display_name { get; set; }
    public string ad_currency { get; set; }
    public double? ad_price { get; set; }
    public DateTime created_date { get; set; }

    public ObservableCollection<AdGalleryData> gallery
    {
        get { return gallery1; }
        set { gallery1 = value; }
    }

    public ObservableCollection<AdGalleryData> gallery1 = new ObservableCollection<AdGalleryData>();

    public HomePageData()
    {
        gallery.Add(new AdGalleryData());

        // gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + ad_guid + "/" + gallery[0].ad_guid + ".png" });
    }

}


public class AdGalleryData
{
    public string ad_guid { get; set; }
    public string ad_gallery_guid { get; set; }
    private string gallery_image1 = "https://www.zeera.online/gallery/ads/25914ccb-7dd2-11e9-be21-0cc47a4422ec/8ac825c0-8399-11e9-be21-0cc47a4422ec.png";

    public string gallery_image
    {
        get
        {
            return gallery_image1;
            // return string.Format("https://www.zeera.online/gallery/ads/{0}/{1}.png", HomePageData.ad_guid, ad_gallery_guid);
        }
        set { gallery_image1 = value; }

    }

    public AdGalleryData()
    {

    }
}

and I am populating the data from my database like this:

public async void populate_homepage()
{
    sort_by = Preferences.Get("HomePageSortBy", "ad_id");
    sort_direction = Preferences.Get("HomePageSortDirection", "DESC");

    var client = new HttpClient();

    client.BaseAddress = new Uri("https://app.zeera.online/webservices/v1/release/www/populate_homepage_ads.php");

    var content = new FormUrlEncodedContent(new[]
    {
        new KeyValuePair<string, string>("language", "EN"),
        new KeyValuePair<string, string>("sort_by", sort_by),
        new KeyValuePair<string, string>("sort_direction", sort_direction)
    });

    var response = await client.PostAsync("https://app.zeera.online/webservices/v1/release/www/populate_homepage_ads.php", content);

    var data = await response.Content.ReadAsStringAsync();

    var result1 = JsonConvert.DeserializeObject<List<HomePageData>>(data);
    var result = result1.Distinct<HomePageData>(new ItemEqualityComparer());

    ObservableCollection<HomePageData> trends;
    ObservableCollection<ObservableCollection<AdGalleryData>> datas = new ObservableCollection<ObservableCollection<AdGalleryData>>();

    if (result != null)
    {
        trends = new ObservableCollection<HomePageData>(result);

    }
    else
    {
        trends = new ObservableCollection<HomePageData>();

        var gallery = new ObservableCollection<AdGalleryData>();

        datas.Add(gallery);

        for (int i = 0; i < datas.Count; i++)
        {
            trends.Add(new HomePageData() { gallery = datas[i] });
        }
    }

    ListViewHomePage.ItemsSource = trends;

    loadingHomePage.IsVisible = false;

    ListViewHomePage.IsVisible = true;
}

class ItemEqualityComparer : IEqualityComparer<HomePageData>
{
    public bool Equals(HomePageData x, HomePageData y)
    {
        return x.ad_id == y.ad_id;
    }

    public int GetHashCode(HomePageData obj)
    {
        return obj.ad_id.GetHashCode();
    }
}

Every ad is having multiple ad gallery [photo]

I have no issue getting the ads listed but how can I add the gallery?

the photo url is like this:

https://www.zeera.online/gallery/ads/[[[ad_guid]]]/[[[ad_guid]]].png

both ad_guid and ad_gallery_guid coming from the same populate_homepage_ads.php above

so how can I pass that to the public HomePageData()?

I tried to do it this way:

gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + ad_guid + "/" + ad_gallery_guid + ".png" });

but the ad_gallery_guid is unknown inside HomePageData()

Kindly help...

Thanks,

Jassim

Technology News @ www.JassimRahma.com

- Reply
samwu
Contributor

3310 Points

1409 Posts
Re: Getting Ads and Ad Gallery to ListView

Aug 15, 2019 10:22 AM|samwu|LINK
Hi jrahma,

I'm sorry for not answering your question in time.

jrahma

gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + ad_guid + "/" + ad_gallery_guid + ".png" });

but the ad_gallery_guid is unknown inside HomePageData()
jrahma
```
public static string ad_guid { get; set; }
    public string ad_gallery_guid { get; set; }
```
In a class first execute the constructor, then assign a value to the property. So it's not possible to get the value of an attribute directly through a constructor unless the property is static, that's why you can get ad_guid but not ad_gallery_guid.

You can try below code, get ad_gallery_guid in get{}.
```
public ObservableCollection<AdGalleryData> gallery
        {
            get
            {
                ObservableCollection<AdGalleryData> data = new ObservableCollection<AdGalleryData>();
                gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + HomePageData.ad_guid + "/" + ad_gallery_guid + ".png" });
                return data;
            }
            set { gallery1 = value; }
        }
```
Best regards,

Sam.
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

jrahma

Member

23 Points

683 Posts

Re: Getting Ads and Ad Gallery to ListView

Aug 16, 2019 12:12 PM|jrahma|LINK

No Worries Sam

So you recommend to set ad_gallery_guid as static in this case?

From your above fix,

i changed my code as you can see below but it's not showing the data and here is the link:

https://www.jassimrahma.net/temp/populate_homepage_ads.php

public class HomePageData
{
    public int ad_id { get; set; }
    public static string ad_guid { get; set; }
    public string ad_gallery_guid { get; set; }
    public string user_guid { get; set; }
    public string display_name { get; set; }
    public string ad_currency { get; set; }
    public double? ad_price { get; set; }
    public DateTime created_date { get; set; }

    /*
    public ObservableCollection<AdGalleryData> gallery
    {
        get { return gallery1; }
        set { gallery1 = value; }
    }
    */

    public ObservableCollection<AdGalleryData> gallery
    {
        get
        {
            ObservableCollection<AdGalleryData> data = new ObservableCollection<AdGalleryData>();
            gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + HomePageData.ad_guid + "/" + ad_gallery_guid + ".png" });
            return data;
        }
        set { gallery1 = value; }
    }

    public ObservableCollection<AdGalleryData> gallery1 = new ObservableCollection<AdGalleryData>();

    public HomePageData()
    {
        gallery.Add(new AdGalleryData());

        // gallery.Add(new AdGalleryData() { gallery_image = "https://www.zeera.online/gallery/ads/" + ad_guid + "/" + gallery[0].ad_guid + ".png" });

        gallery.Add(new AdGalleryData() { gallery_image = string.Format("https://www.zeera.online/gallery/ads/{0}/{1}.png", ad_guid, ad_gallery_guid) });

        // CONSOLE OUTPUT TEMP
        System.Diagnostics.Debug.WriteLine("STARTING OUTPUT GALLERY");
        for (int i = 0; i < gallery.Count; i++)
        {
            System.Diagnostics.Debug.WriteLine(string.Format("https://www.zeera.online/gallery/ads/{0}/{1}.png", gallery[i].ad_guid, gallery[i].ad_gallery_guid));
        }
        System.Diagnostics.Debug.WriteLine("COMPLETED OUTPUT GALLERY");
        // CONSOLE OUTPUT TEMP
    }

}


public class AdGalleryData
{
    public string ad_guid { get; set; }
    public string ad_gallery_guid { get; set; }
    private string gallery_image1 = "https://www.zeera.online/gallery/ads/25914ccb-7dd2-11e9-be21-0cc47a4422ec/8ac825c0-8399-11e9-be21-0cc47a4422ec.png";

    public string gallery_image
    {
        get
        {
            return gallery_image1;
            // return string.Format("https://www.zeera.online/gallery/ads/{0}/{1}.png", HomePageData.ad_guid, ad_gallery_guid);
        }
        set { gallery_image1 = value; }

    }

    public AdGalleryData()
    {

    }
}

and populating the data here:

public async void populate_homepage()
{
    sort_by = Preferences.Get("HomePageSortBy", "ad_id");
    sort_direction = Preferences.Get("HomePageSortDirection", "DESC");

    var client = new HttpClient();

    client.BaseAddress = new Uri("https://www.jassimrahma.net/temp/populate_homepage_ads.php");

    var content = new FormUrlEncodedContent(new[]
    {
        new KeyValuePair<string, string>("language", "EN"),
        new KeyValuePair<string, string>("sort_by", sort_by),
        new KeyValuePair<string, string>("sort_direction", sort_direction)
    });

    var response = await client.PostAsync("https://www.jassimrahma.net/temp/populate_homepage_ads.php", content);

    var data = await response.Content.ReadAsStringAsync();

    var result1 = JsonConvert.DeserializeObject<List<HomePageData>>(data);
    var result = result1.Distinct<HomePageData>(new ItemEqualityComparer());

    ObservableCollection<HomePageData> trends;
    ObservableCollection<ObservableCollection<AdGalleryData>> datas = new ObservableCollection<ObservableCollection<AdGalleryData>>();

    if (result != null)
    {
        trends = new ObservableCollection<HomePageData>(result);

    }
    else
    {
        trends = new ObservableCollection<HomePageData>();

        var gallery = new ObservableCollection<AdGalleryData>();

        datas.Add(gallery);

        for (int i = 0; i < datas.Count; i++)
        {
            trends.Add(new HomePageData() { gallery = datas[i] });
        }
    }

    ListViewHomePage.ItemsSource = trends;

    loadingHomePage.IsVisible = false;

    ListViewHomePage.IsVisible = true;
}

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