title: .NET method to convert a string to sentence case
body: <p>I'm looking for a function to convert a string of text that is in UpperCase to SentenceCase. All the examples I can find turn the text into TitleCase.</p>
  
  <blockquote>
    <p>Sentence case in a general sense
    describes the way that capitalization
    is used within a sentence. Sentence
    case also describes the standard
    capitalization of an English sentence,
    i.e. the first letter of the sentence
    is capitalized, with the rest being
    lower case (unless requiring
    capitalization for a specific reason,
    e.g. proper nouns, acronyms, etc.).</p>
  </blockquote>
  
  <p>Can anyone point me in the direction of a script or function for SentenceCase?</p>