Try something like this to get an array of files that fit your pattern:
string[] files = Directory.GetFiles(
    DirectoryPath, 
    String.Format("{0}.*", fileNameOnly));
solved multiple checks for file extension [closed]
 
Try something like this to get an array of files that fit your pattern:
string[] files = Directory.GetFiles(
    DirectoryPath, 
    String.Format("{0}.*", fileNameOnly));
solved multiple checks for file extension [closed]