.net - C# - Append Number To File Being Saved -

i have created screenshot program , working great. problem is, not sure how can make screenshots saved appending numbers.

example: screenshot 1, screenshot 2, screenshot 3, screenshot 4, etc.

obviously applied other files being saved. ideas? thank you.

here method use case. pass in string "screenshot" , find lowest available filename in format of "screenshot [number]" (or "screenshot" if there aren't already):

private string getuniquename(string name, string folderpath) {     string validatedname = name;     int tries = 1;     while (file.exists(folderpath + validatedname))     {         validatedname = string.format("{0} [{1}]", name, tries++);     }     return validatedname; } 

(note: simplified version doesn't take file extensions account).