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xamlmvvmuwpcallisto

The attachable property HtmlSource was not found in type WebViewExtension

I found this source at Callisto for WebView as WebViewExtension method. This same method was working fine in windows 8.1 apps and now when I try to use in universal windows apps then it is giving me this error.

The attachable property HtmlSource was not found in type WebViewExtension

I am using this inside a user control with this syntax.

<WebView x:Name="ContentView"
Margin="15,10,10,10"
callisto:WebViewExtension.HtmlSource="{Binding SelectedFeedItem.Content}"/>

Source of WebViewExtension method is here.

Update: Just to make sure I haven't messed up my xmlns declarations.
1. I have a common folder common and in inside I have a class called Callisto.cs file with the same source copied and no change.
2. In my xmlns: declaration I have xmlns:callisto="Myrssapp.Win10.Common" Below is the image. enter image description here

Solution

  • I found my issue and I don't know why it worked in Win 8 or I must have changed something. The mistake was in the xmlns: statement.

    instead of
    xmlns:callisto="Myrssapp.Win10.Common"

    it should be xmlns:callisto="using:Myrssapp.Win10.Common"
    I missed the using keyword.