private void btnAddCategory_Click(object sender, EventArgs e) { if (CheckFields()) { try { using (var client = new DataClient()) { client.AddCategory(tbName.Text, rtbDiscription.Text); } DialogResult = DialogResult.OK; this.Close(); } catch (Exception ex) { MessageBox.Show(ex.ToString(), "Произошла ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }