private void FormSaleView_Load(object sender, EventArgs e) { dateTimePicker2.Value = DateTime.Now; dateTimePicker1.Value = dateTimePicker2.Value; DataTable dt = db.GetSalesReceipt(); dataGridView1.DataSource = dt; dataGridView1.ClearSelection(); if (parentflag == 1) { comboBox2.SelectedItem = "未结算"; GridViewTypeScreen(0);//筛选未结算 comboBox2.Enabled = false; } else { comboBox2.SelectedItem = "全部"; } }