窗体传值,子窗体,父窗体,反射,reflection,windows,组策略,gpedit.msc,动态创建窗体,谢谢，系列<三> Virus

针对BTQ在系列一中提出的建议，上午我思考了一下，同时仔细研究了windwos组策略的子窗体返回值类型，发现不是数字，就是bool，居多，我想应该可以用string来统一，把数据的处理放在子窗体，这样主窗体只是传递string过去，接收string回来，就不用为每个窗体写传值和返回值了，希望可以有用。
下面是BTQ在系列一中的建议，谢谢！

#7楼 219.128.156.* 2008-05-27 08:53 BTQ [未注册用户]

两个Form之类数据的传递方式不是太好。
光一个PasswordLength的子窗体就写了这么多的代码的话，那么当更多类型的子窗体出现时，你的主窗体中代码将很长，判断也会很多。

我觉得统一一种机制去传递数据，子窗体在收到数据后，自行解析数据再具体处理会好一些。

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 PersonalUdisk
{
    public partial class frmModifyConfig : Form
    {
        private TreeNode _selectedNode;
        private readonly string _policyType;

        public frmModifyConfig()
        {
            InitializeComponent();
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            _selectedNode = e.Node;
            lvConfig.Items.Clear();
            Fill_lvConfig(_selectedNode);

        }
        private void Fill_lvConfig(TreeNode treeNode)
        {
            //MessageBox.Show(Convert.ToString(PolicyType.日志策略));
            ListViewItem lvItem1;
            switch (treeNode.Text)
            {
                case "PIN码策略":
                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "PIN码长度最小值";
                    lvItem1.SubItems.Add("5 个字符");
                    lvItem1.SubItems.Add("frmPasswordLength");
                    lvConfig.Items.Add(lvItem1);

                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "PIN码最长存留期";
                    lvItem1.SubItems.Add("42 天");
                    lvItem1.SubItems.Add("frmPINOvertime");
                    lvConfig.Items.Add(lvItem1);

                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "PIN码复杂性要求";
                    lvItem1.SubItems.Add("字母");
                    lvItem1.SubItems.Add("frmPasswordComplexity");
                    lvConfig.Items.Add(lvItem1);
                    
                
                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "PIN码历史记录次数";
                    lvItem1.SubItems.Add("5 个记住的密钥");
                    lvItem1.SubItems.Add("frmPINHistoryNumber");
                    lvConfig.Items.Add(lvItem1);

                   break;
                case "日志策略":
                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "禁用日志";
                    lvItem1.SubItems.Add("禁用");
                    lvItem1.SubItems.Add("frmForbidLog");
                    lvConfig.Items.Add(lvItem1);
                    break;
                case "登录策略":
                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "登录方式";
                    lvItem1.SubItems.Add("");
                    lvItem1.SubItems.Add("frmLoginManner");
                    lvConfig.Items.Add(lvItem1);
                    break;
                case "进程及文件策略":
                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "进程白名单";
                    lvItem1.SubItems.Add("");
                    lvItem1.SubItems.Add("frmProcessWhiteList");
                    lvConfig.Items.Add(lvItem1);

                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "文件拷贝类型黑名单";
                    lvItem1.SubItems.Add("");
                    lvItem1.SubItems.Add("frmFileTypeBlackList");
                    lvConfig.Items.Add(lvItem1);

                    lvItem1 = new ListViewItem();
                    lvItem1.SubItems.Clear();
                    lvItem1.SubItems[0].Text = "文件打开类型黑名单";
                    lvItem1.SubItems.Add("");
                    lvItem1.SubItems.Add("frmExecuteFileTypeBlackList");
                    lvConfig.Items.Add(lvItem1);
                    break;
            }
        }


        private string _childValue;
        public string ChildValue
        {
            get { return this._childValue; }
            set { this._childValue = value; }
        }
        
        private string _parentValue;
        public string ParentValue
        {
            get { return this._parentValue; }
            set { this._parentValue = value; }
        }


        private void lvConfig_DoubleClick(object sender, EventArgs e)
        {
            Type type = Type.GetType("PersonalUdisk." + lvConfig.SelectedItems[0].SubItems[2].Text);
          
            this._parentValue = lvConfig.SelectedItems[0].SubItems[1].Text;
            object obj = Activator.CreateInstance(type);

            Form form = (Form)obj;
            form.Owner = this;
            form.ShowDialog();
            if (form.DialogResult == DialogResult.OK)
            {

                this.lvConfig.SelectedItems[0].SubItems[1].Text = Convert.ToString(type.GetProperty("ChildValue").GetValue(form, null));
            }
        }

        private void frmModifyConfig_Load(object sender, EventArgs e)
        {

        }
    }
    public enum PolicyType
    {
        PIN码策略,
        登录策略,
        日志策略,
        进程及文件策略
    }
}

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

namespace PersonalUdisk
{
    public partial class frmPasswordLength : Form
    {

        private frmModifyConfig frmParent;
        
        private string _parentValue;
        public string ParentValue
        {
            get { return this._parentValue; }
            set { this._parentValue = value; }
        }
        private string _childValue;

        public string ChildValue
        {
            get { return this._childValue; }
            set { this._childValue = value; }
        }
        public frmPasswordLength()
        {
            InitializeComponent();
            btnOK.DialogResult = DialogResult.OK;
            btnCancel.DialogResult = DialogResult.Cancel;

        }
        public int PINLength
        {
            get { return Convert.ToInt32(this.numericPINLength.Value); }
            set { this.numericPINLength.Value = value; ;}
        }

        private void numericPINLength_ValueChanged(object sender, EventArgs e)
        {
            ModifylblPINLengthInfo();
        }

        private void ModifylblPINLengthInfo()
        {
            if (this.numericPINLength.Value == 0)
            {
                this.lblPINLengthInfo.Text = "不要求PIN码。";
            }
            else
            {
                this.lblPINLengthInfo.Text = "PIN码必须至少是:";
            }
        }


        private void frmPasswordLength_Load(object sender, EventArgs e)
        {
            frmParent = (frmModifyConfig)this.Owner;
            this.numericPINLength.Value =Convert.ToInt32( frmParent.ParentValue.Substring(0, frmParent.ParentValue.IndexOf(" ")));
            ModifylblPINLengthInfo();
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            this._childValue = Convert.ToString(this.numericPINLength.Value)+ " 个字符";

        }


    }
}

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

namespace PersonalUdisk
{
    public partial class frmPasswordComplexity : Form
    {
        private frmModifyConfig _frmParent;
        private string _childValue;
        private string _parentValue;

        public string ParentValue
        {
            get { return _parentValue; }
            set { _parentValue = value; }
        }
        public string ChildValue
        
        {
            get { return this._childValue; }
            set { this._childValue = value; }
        }

        public frmPasswordComplexity()
        {
            InitializeComponent();
            this.btnOK.DialogResult = DialogResult.OK;
            this.btnCancel.DialogResult = DialogResult.Cancel;
        }
        
        private void frmPasswordComplexity_Load(object sender, EventArgs e)
        {
            this._frmParent = (frmModifyConfig)this.Owner;
            this._parentValue = _frmParent.ParentValue;
            modifyChecked(_parentValue);

        }

        private void modifyChecked(string parentValue)
        {
            switch (parentValue)
            {
                case "字母":
                    this.rbtnChar.Checked = true;
                    break;
                case "字母+数字":
                    this.rbtnCharNum.Checked = true;
                    break;
                case "字母+数字+特殊字符":
                    this.rbtnCharNumSpecial.Checked = true;
                    break;
            }
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            if (rbtnChar.Checked == true)
            {
                this._childValue = "字母";

            }
            else if (rbtnCharNum.Checked)
            {
                this._childValue = "字母+数字";
            }
            else if ( this.rbtnCharNumSpecial .Checked)
            {
                this._childValue = "字母+数字+特殊字符";
            }
        }
    }
}