public static string FindFileByFileName(string directoryPath, string fileName, FindFileOptions options = FindFileOptions.Default)
{
string fullPath = string.Empty;
if (!string.IsNullOrEmpty(fileName) && System.IO.Directory.Exists(directoryPath))
{
if (options.HasFlag(FindFileOptions.IgnoreCase))
{
fileName = fileName.ToLowerInvariant();
}
foreach (string filePath in System.IO.Directory.EnumerateFiles(directoryPath, "*", System.IO.SearchOption.AllDirectories))
{
string candidateFileName = options.HasFlag(FindFileOptions.IgnoreExtension) ?
System.IO.Path.GetFileNameWithoutExtension(filePath) :
System.IO.Path.GetFileName(filePath);
if (options.HasFlag(FindFileOptions.IgnoreCase))
{
candidateFileName = candidateFileName.ToLowerInvariant();
}
if (candidateFileName.Equals(fileName))
{
fullPath = filePath;
break;
}
}
}
return(fullPath);
}