Form_menu_3.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace 城市天然气管道风险管理与决策系统
{
    public partial class Form_menu_3 : Form
    {
        private List<int> selected_item;
        private List<double> u_RS;
        private List<double> u_PR;
        private List<double> u_ROC;
        private readonly List<string> solutions = new List<string>() { "方案一", "方案二", "方案三", "方案四", "方案五" };

        public Form_menu_3()
        {
            InitializeComponent();

            selected_item = new List<int>();
            u_PR = new List<double>();
            u_ROC = new List<double>();
            u_RS = new List<double>();
        }

        private void Form_menu_3_Load(object sender, EventArgs e)
        {
            textBox1.Text = GlobalData.default_pipeline.Id.ToString();
            textBox2.Text = GlobalData.default_pipeline.Name;
            textBox4.Text = GlobalData.default_pipeline.StartLocation;
            textBox3.Text = GlobalData.default_pipeline.EndLocation;

            comboBox2.Enabled = false;
            comboBox3.Enabled = false;
            comboBox4.Enabled = false;
            comboBox5.Enabled = false;
            comboBox6.Enabled = false;
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            comboBox2.Enabled = true;
            selected_item.Add(comboBox1.SelectedIndex);
            comboBox1.Enabled = false;
        }

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (!selected_item.Contains(comboBox2.SelectedIndex))
            {
                selected_item.Add(comboBox2.SelectedIndex);
                comboBox3.Enabled = true;
                comboBox2.Enabled = false;
            }
            else
            {
                MessageBox.Show("请勿重复选择");
                return;
            }
        }