PLEASE USE OBJECT ORIENTED PROGRAMMING IN C# USING MICROSOFT VISUAL.

PLEASE MAKE IT USER INPUT

*****PLEASE USE C#(C SHARP)*****

thanks it's really appreciated for all the help

Write a console app that inputs a sentence from the user (assume no punctuation), then determines and displays the nonduplicate words in alphabetical order. Treat uppercase and lowercase letters the same. [Hint You can use sting method Split with no arguments, as in sentence.Split(), to break a sentence into an aray of stings containing the individual words. By default, Split uses spaces as delimiters. Use string method ToLower in the select and orderby clauses of your LINQ query to obtain the lowercase version of each word] Your app should allow the user to repeat for next sentence, and "END" to end the app excution Write a console app that inserts 30 random letters into a List. Perform the following queries on the List and display your results: a) Use LINQ to sort the List in ascending order. b) Use LINQ to sort the List in descending order. c Display the List in ascending order with duplicates removed. Hint: Strings can be indexed like arays to access a character at a specific index ]