private void btnOk_Click(object sender, EventArgs e) { String newTag = tbTag.Text.Trim().ToLower(); if (String.IsNullOrEmpty(newTag)) { MessageBox.Show(Resources.Labels.EmptyTagNotAllowed, Resources.Labels.TagRenameErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error); return; } else { if ((!tag.Equals(newTag)) && (!keeper.RenameTag(tag, newTag))) { MessageBox.Show(String.Format(Resources.Labels.TagAlreadyExistFormat, newTag), Resources.Labels.TagRenameErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error); return; } } this.DialogResult = DialogResult.OK; this.Close(); }