title: How to get an existing range name from an Excel worksheet using c# Excel.Interop?
body: <p>I am working with a very large worksheet that has many named ranges. I expect that the worksheet will be modified in the future, so I cannot interact with cells using their cell number. </p>
  
  <p>How can I get an existing name (or list of the existing names) from the worksheet? Alternatively, how can I tell my C# program that a certain name already exists, and to utilize it?</p>