private bool CheckFilenamePattern()
{
var filename = FilenameHelper.GetFilenameFromPattern(textbox_screenshotname.Text, coreConfiguration.OutputFileFormat, null);
// we allow dynamically created subfolders, need to check for them, too
var pathParts = filename.Split(Path.DirectorySeparatorChar);
var filenamePart = pathParts[pathParts.Length - 1];
var settingsOk = FilenameHelper.IsFilenameValid(filenamePart);
for (var i = 0; settingsOk && i < pathParts.Length - 1; i++)
{
settingsOk = FilenameHelper.IsDirectoryNameValid(pathParts[i]);
}
DisplayTextBoxValidity(textbox_screenshotname, settingsOk);
return(settingsOk);
}