how to search the hard disk with c#

Question

hi

i want to search using C# like i give it the name and it give me the path so i can open it or delete it ...ETC 

i want a method to make this directly not through open file dialog 

i have a text box to make the user type the name of the folder/file and button to search 

is it by an algorithm or there are any library in C# to do that give me any hints :)