AppAlertService that wraps multiple Image sources

[Graeme]

I just wanted to share a simplified version of a wrapper service for the DesktopAlert that we use to handle Images from multiple sources - see below.

 I trust that someone will find this useful.

Enjoy! 

Graeme

 

1. Resource Image references

1.<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
2.                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
3.    <BitmapImage x:Key="MailImage" UriSource="Images/Mail.png" />
4.    <BitmapImage x:Key="ContactImage" UriSource="Images/Contact.png" />
5.</ResourceDictionary>

 

2. Type References to images

1.public enum AppAlertIconType
2.{
3.    Mail,
4.    Contact,
5.    Url = -1
6.}

 

3. Alert service interface (we use MEF)

1.public interface IAppAlertService
2.{
3.    void ShowMessage(string header, string content, string imageUrl, int showDuration = 5000, double width = 48, double height = 48);
4.    void ShowMessage(string header, string content, AppAlertIconType icon, string imageUrl = "", int showDuration = 5000, double width = 48, double height = 48);
5.    void ShowMessage(string header, string content, Image image, int showDuration = 5000, double width = 48);
6.    void CloseAllAlerts();
7.}

 

4. Alert Service

01.public class AppAlertService : IAppAlertService
02.{
03.    RadDesktopAlertManager manager = new RadDesktopAlertManager(AlertScreenPosition.TopRight);
04.
05.    public void ShowMessage(string header, string content, string imageUrl, int showDuration = 5000, double width = 48, double height = 48)
06.    {
07.        this.ShowMessage(header, content, AppAlertIconType.Url, imageUrl, showDuration, width, height);
08.    }
09.
10.    public void ShowMessage(string header, string content, AppAlertIconType icon, string imageUrl = "", int showDuration = 5000, double width = 48, double height = 48)
11.    {
12.        Func<AppAlertIconType, Image> GetResourceImage = new Func<AppAlertIconType, Image>(t => new Image { Source = Application.Current.FindResource(string.Format("{0}Image", t.ToString())) as ImageSource, Width = width, Height = height });
13.        Func <string, Image> GetWebImage = new Func<string, Image>(t => new Image { Source = new BitmapImage(new Uri(t, UriKind.Absolute)), Width = width, Height = height });
14.        this.ShowMessage(header, content, icon == AppAlertIconType.Url ? GetWebImage(imageUrl) : GetResourceImage(icon), showDuration, width);
15.    }
16.
17.    public void ShowMessage(string header, string content, Image image, int showDuration = 5000, double width = 48)
18.    {
19.        manager.ShowAlert(new DesktopAlertParameters
20.        {
21.            Header = header,
22.            Content = content,
23.            Icon = image,
24.            IconColumnWidth = width,
25.            IconMargin = new Thickness(10, 0, 20, 0),
26.            ShowDuration = showDuration
27.        });
28.    }
29.
30.    public void CloseAllAlerts()
31.    {
32.        manager.CloseAllAlerts();
33.    }
34.}

 

5. Usage

1.IAppAlertService alertService = new AppAlertService();
2.alertService.ShowMessage("header", "content goes here", AppAlertIconType.Mail);
3.alertService.ShowMessage("header", "content goes here", AppAlertIconType.Url, "http://greywolf.critter.net/images/gallery/critters/2007-09-14-happy-pink-unicorn.jpg");

[Kalin]

Hi Graeme,

Thanks for sharing your solution with the community. If you would like to, you could submit a sample runnable project demonstrating the exact approach in our WPF Code Libraries, so everyone can easily test it.

I have updated your Telerik points for your involvement.

Regards,
Kalin
Telerik