public static bool IsValidPrefix(string line) { return Regex.IsMatch(line, @"^[a-z0-9._=-\[\]]*$", RegexOptions.IgnoreCase); }
private void SnapshotPrefix_Validating(object sender, CancelEventArgs e) { if (!Validator.IsValidPrefix(SnapshotPrefix.Text)) { MessageBox.Show("Invalid format for Snapshot Prefix. Must only characters: ( a-z0-9._-=[] )!", "Validation Error"); } }