using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Reflection;

namespace WindowsApplication1
{
    public partial class frmPolicyConfig : Form
    {
        public frmPolicyConfig()
        {
            InitializeComponent();
        }
        private string returnValue;
        public string ReturnValue
        {
            get { return this.returnValue; }
            set { listView1.SelectedItems[0].SubItems[2].Text = value; }
            }
        private void listView1_DoubleClick(object sender, EventArgs e)
        {
            Type type = Type.GetType("WindowsApplication1." + listView1.SelectedItems[0].SubItems[2].Text);
            object obj = Activator.CreateInstance(type);
            Form form = (Form)obj;
            form.Owner = this;
            form.ShowDialog();
            if (form.DialogResult == DialogResult.OK)
            {
                PropertyInfo[] pinfos = type.GetProperties();
                foreach (PropertyInfo p in pinfos)
                {
                    if (p.Name == "PasswordLength")
                    {
                        //MessageBox.Show(Convert.ToString(p.GetValue(obj, null)));
                        this.returnValue=Convert.ToString(p.GetValue(obj, null))+" 个字符";
                        listView1.SelectedItems[0].SubItems[1].Text = this.returnValue;

                        //foreach (ListViewItem lvItem in listView1.Items)
                        //{
                        //    if (lvItem.Text.Equals("密码长度最小值"))
                        //    {
                        //        lvItem.SubItems[1].Text = this.returnValue;
                        //        break;
                        //    }
                        //}
                        break;
                    }                    
                    
                }
            }
            
        }

        
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class frmPasswordLength : Form
    {
        

        public frmPasswordLength()
        {
            InitializeComponent();
            button2.DialogResult = DialogResult.OK;
            button1.DialogResult = DialogResult.Cancel;
        }
        public int PasswordLength
        {
            get { return Convert.ToInt32( this.numericUpDown1.Value); }
            set { this.numericUpDown1.Value = value; }
        }
      
           

       
    }
}