C# 遍历类为元素的列表

using System;
using System.Windows.Forms;
using ClassLibrary2;
using System.Collections.Generic;

namespace messageshow
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Adda();
        }

        private void listView1_SelectedIndexChanged(object sender, EventArgs e)
        {
        }

        
        


        public void Adda()
        {

            Class1 class1 = new Class1
            {
                Text = "a",
                Project = "b",
                Object = "c",
                Location = "d",
                wRONGTYPE = Value.WRONGTYPE.WARNING
            };

            Class1 class2 = new Class1
            {
                Text = "文本",
                Project = "项目",
                Object = "对象",
                Location = "位置",
                wRONGTYPE = Value.WRONGTYPE.WARNING
            };


            List<Class1> class1s = new List<Class1>
            {
                class1,
                class2
            };

            Value.Collection.Add(Value.WRONGTYPE.WARNING, class1s);



            // li.Text = "1";
            foreach (Class1 u in Value.Collection[Value.WRONGTYPE.WARNING])
            {
                string[] sub = new string[]
                {
                    "",
                    u.Text,
                   u.Project,
                    u.Object,
                    u.Location };
                
            ListViewItem li;
            li = new ListViewItem(sub);
                // 
                this.listView3.Items.Add(li);
            }
                
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ClassLibrary2
{
    public static class Value
    {
        public enum WRONGTYPE
        {
            WRONG, WARNING
        }

        public static Dictionary<WRONGTYPE, List<Class1>> Collection = new Dictionary<WRONGTYPE, List<Class1>>();
        
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ClassLibrary2
{
    public class Class1
    {
        public string Text;
        public string Project;
        public string Object;
        public string Location;
        public Value.WRONGTYPE wRONGTYPE;
    }
}