/// <summary>
/// Helper method to check if file exists.
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public static string VerifyFileExists(string filename)
{
if (filename == null)
{
return(null);
}
string filepath = PathSW.GetFullPath(filename.ToLowerInvariant());
if (FileSW.Exists(filepath))
{
return(filepath);
}
if (PathSW.IsPathRooted(filename.ToLowerInvariant()) == true)
{
string rootpath = PathSW.GetPathRoot(filename);
filepath = rootpath + PathSW.DirectorySeparatorChar + PathSW.GetFileName(filename);
return(filepath);
}
// Use additional search paths provided by user.
for (int i = 0; _searchpaths != null && i < _searchpaths.Length; i++)
{
if (String.IsNullOrEmpty(_searchpaths[i]) == false)
{
filepath = _searchpaths[i] + PathSW.DirectorySeparatorChar + filename;
if (FileSW.Exists(filepath))
{
return(PathSW.GetFullPath(filepath));
}
}
}
Console.WriteLine("{0} could not be found", filename);
return(null);
}
