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...-优快云博客

本文探讨了Windows应用程序中主窗体与子窗体间的数据传递机制，提出了使用字符串统一数据格式的方法，以简化代码并提高灵活性。

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";

}