windows phone 8 dev in c#

windows-phone-8-and-C#

C#:

1) output debug info in console:
  System.Diagnostics;
  ...

  Debug.WriteLine("");

2)  a regex that matchs html link:         
            var regEx = new Regex(
                //@"\<a\s(href\=""|[^\>]+?\shref\="")(?<link>[^""]+)"".*?\>(?<text>.*?)(\<\/a\>|$)",
                @"\<a\s(href(\s)*\=(\s)*"")(?<link>[^""]+)"".*?\>(?<text>.*?)(\<\/a\>|$)",
                //@"(<a\s[^>]*href=")(.*?)("[^>]*>).*?(</a>)",
                //@"#(<a[^>]*?)$filter_string(.*?)<\/a>#s",
                RegexOptions.IgnoreCase | RegexOptions.Multiline);

3) decode utf8 string:
    string decodeStr = System.Text.RegularExpressions.Regex.Unescape(utf8Str);


XAML:

1) define a BitmapImage and Image     
    <x:String x:Key="SubscribeButtonImageUri">/WeiboSubscribe;Assets\e113.png</x:String>   
    <BitmapImage x:Key="SubscribeButtonImageSource"  UriSource="SubscribeButtonImageUri"/>
    <Image Source="Assets\e113.png" />



windows phone 8:

1) WebBrowser.InvokeScript  error, code: 80020006
  cannot find javascript function. wait for page load completed.
   You'll get the 80020101 error if the javascript method can't be found or th JS throws an error

2) as System.Diagnostics.Debug.Writeline("") can not write to output, use
   System.Diagnostics.Debugger.Log(4, "info", "msg") instead.

3）Error HRESULT E_FAIL has been returned from a call to a COM component