wpf 预览 html,wpf怎样打开浏览器，显示指定的网页

这个简单

我的一段代码

private void HashtagClickedInTweet(object sender, RoutedEventArgs reArgs)

{

if (reArgs.OriginalSource is System.Windows.Documents.Hyperlink)

{

Hyperlink h = reArgs.OriginalSource as Hyperlink;

string hashtag = h.Tag.ToString();

string hashtagUrl = String.Format(Settings.Default.HashtagUrl, Uri.EscapeDataString(hashtag));

try

{

System.Diagnostics.Process.Start(hashtagUrl);

}

catch

{

// TODO: Warn the user? Log the error? Do nothing since Witty itself is not affected?

}

reArgs.Handled = true;

}

}

这是开默认浏览器