private void button1_Click(object sender, EventArgs e) { string c = textBox1.Text; BLL.BLL As = new BLL.BLL(); int count = Convert.ToInt32(As.AddSlipWay_SS(c)); if (count == 0) { Entity.Slipway es = new Entity.Slipway(); string a = textBox2.Text; int result; if (int.TryParse(a, out result)) { try { es.Name = textBox1.Text; es.Volume = Convert.ToInt32(textBox2.Text); BLL.BLL bb = new BLL.BLL(); bb.AddSlipway(es); MessageBox.Show("添加船台成功"); } catch (FormatException) { MessageBox.Show("容纳船数必须为数字"); } catch { MessageBox.Show("添加船台失败"); } } else { MessageBox.Show("请检查容纳船数是否为数字", "提醒"); } } else { MessageBox.Show("船台名已存在"); } }