I have a Image in my xaml in which the source is a URL that Iam binding.The URL from json will be like this : "/images/Uploads/e0111.png". I have the URL in my Common values stored class as CommonValues.URL. How can I add this "CommonValues.URL" before the json at the time of binding? So that the source for Image will be http://example.com//images/Uploads/e0111.png.?
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2 Answers
If you need Uri
var myUrl= new Uri(CommonValues.URL + "images/Uploads/e0111.png");
If string than
var myUrl=CommonValues.URL + "images/Uploads/e0111.png";
Or you can do it like this in your ViewModel or Page
public string Url => string.Format("{0}{1}", CommonValues.URL,"/images/Uploads/e0111.png");
Then in XAML:
<Button Text="{Binding Url}"/>
answered Jan 30, 2019 at 10:55
Arvind Chourasiya
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3 Comments
Anand
Bro how can I do this in xaml?
Arvind Chourasiya
Create one public property
myUrl in your viewmodel & than pass it to xaml file. It doesn't seem that you can do it from xaml.Anand
let me check bro
You can use a converter, which will allow you to reuse in all your views/application
public class UrlConverter : IValueConverter
{
#region IValueConverter implementation
public object Convert (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
var test = value as string;
if (!string.IsNullOrEmpty(test))
{
return CommonValues.URL + test;
}
return false;
}
public object ConvertBack (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException ();
}
#endregion
}
Then, in your page:
<ContentPage.Resources>
<ResourceDictionary>
<converter:UrlConverter x:Key="UrlConverter" />
</ResourceDictionary>
</ContentPage.Resources>
<Image Source="{Binding YourProperty, Converter={StaticResource UrlConverter}}"/>
