反射技术在通用权限管理系统组件源码中的实际应用参考【附源码】

这个是我们系统中的菜单与对应的窗体之间的关联关系，一般一个菜单明确指向其中的某个窗体，由于窗体很多，都把窗体分别放在不同的包不同的命名空间不同的DLL里，这样将来好管理，好分类，好定位。

代码

//------------------------------------------------------------
// All Rights Reserved , Copyright (C) 2010 , Jirisoft , Ltd.
//------------------------------------------------------------

using System;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

namespace DotNet.WinForm
{
using DotNet.Service;
using DotNet.WinForm.Utilities;
using DotNet.Utilities;
using DotNet.WinForm.Message;
using DotNet.WinForm.ResourcePermission;
using DotNet.WinForm.WorkFlow;

/// <summary>
/// MainForm
///
/// 修改纪录
///
/// 2009.11.11 版本：2.0 JiRiGaLa 美化图标。
/// 2007.10.29 版本：1.0 JiRiGaLa 创建。
///
/// 版本：1.0
///
/// <author>
/// <name>JiRiGaLa</name>
/// <date>2007.10.29</date>
/// </author>
/// </summary>
public partial class SDIMainForm : BaseForm, IBaseMainForm // Form
{
public SDIMainForm()
{
InitializeComponent();
if (!this.DesignMode)
{
// 获得图标
this.GetIcon();
}
}

new public void GetIcon()
{
if (System.IO.File.Exists(BaseSystemInfo.AppIco))
{
this.notifyIcon.Icon = new Icon(BaseSystemInfo.AppIco);
}
}

public void InitService()
{
Program.InitService(UserInfo);
// Thread Thread = new Thread(new ThreadStart(Program.InitService));
// Thread.Start();
}

#region private void LoadChildrenForm(string assemblyName, string formName)
/// <summary>
/// 加载选定的子窗口
/// </summary>
/// <param name="assemblyName">程序集</param>
/// <param name="selectedNodeName">当前选择的窗体名称</param>
private void LoadChildrenForm(string assemblyName, string formName)
{
if (formName.Length == 0)
{
return;
}
// 是否已经打开了？若已经打开了这个窗体，那就不用重复打开了
foreach (Form childrenForm in this.OwnedForms)
{
if (childrenForm.Name == formName)
{
childrenForm.Visible = true;
childrenForm.Activate();
return;
}
}
// 一些特殊的页面处理，重新登录时，需要把其他页面都自动关闭了。
switch (formName)
{
case "FrmLogOn":
// 关闭所有打开的窗口
foreach (Form childrenForm in this.MdiChildren)
{
childrenForm.Close();
}
this.ShowChildrenForm(assemblyName, formName);
break;
default:
this.ShowChildrenForm(assemblyName, formName);
return;
}
}
#endregion

/// <summary>
/// 反射显示窗体
/// </summary>
/// <param name="assemblyName">命名空间</param>
/// <param name="formName">窗体名称</param>
/// <returns>对象</returns>
private object CreateInstance(string assemblyName, string formName)
{
// 这里用了缓存技术，若已经被创建过就不反复创建了
Assembly assembly = CacheManager.Instance.Load(assemblyName);
Type type = assembly.GetType(assemblyName + "." + formName, true, false);
return Activator.CreateInstance(type);
}

private void ShowChildrenForm(string assemblyName, string formName)
{
Form childrenForm = (Form)this.CreateInstance(assemblyName, formName);
if (childrenForm != null)
{
childrenForm.Name = formName;
childrenForm.Owner = this;
childrenForm.ShowInTaskbar = false;
childrenForm.Show();
}
}

private void mitm_Click(object sender, EventArgs e)
{
// 这里是获取表单的名称
string formName = ((ToolStripMenuItem)sender).Name.Substring(4);
// 这里是获取命名空间
string assemblyName = BaseSystemInfo.MainAssembly;
if (((ToolStripMenuItem)sender).Tag != null)
{
assemblyName = ((ToolStripMenuItem)sender).Tag.ToString();
}
// 这里是加载窗体，不会重复加载窗体
this.LoadChildrenForm(assemblyName, formName);
}

private void mitmFrmLogOn_Click(object sender, EventArgs e)
{
// 按配置的登录页面进行登录
this.LoadChildrenForm(BaseSystemInfo.LogOnAssembly, BaseSystemInfo.LogOnForm);
}

private DateTime LastChekDate = DateTime.MinValue;

public void CallMessager()
{
this.CallMessager(true);
}

/// <summary>
/// 即时通讯
/// </summary>
/// <param name="show">显示</param>
public void CallMessager(bool show)
{
if (Program.frmMessage == null)
{
Program.frmMessage = new FrmMessage();
}
if (show)
{
Program.frmMessage.Visible = true;
// Program.FrmMessage.ShowInTaskbar = true;
Program.frmMessage.Show();
Program.frmMessage.WindowState = FormWindowState.Normal;
Program.frmMessage.Activate();
}
else
{
// 加载窗体
// Program.FrmMessage.WindowState = FormWindowState.Minimized;
Program.frmMessage.Show();
Program.frmMessage.Hide();
}
}

private void btnMessage_Click(object sender, EventArgs e)
{
this.CallMessager();
}

private void mitmFrmMessage_Click(object sender, EventArgs e)
{
this.CallMessager();
}

private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e)
{
// FrmWorkFlowTest frmWorkFlowTest = new FrmWorkFlowTest();
// frmWorkFlowTest.Show();

// FrmWorkFlowStatr frmWorkFlowStatr = new FrmWorkFlowStatr();
// frmWorkFlowStatr.Show();

// 用户权限(项目权限)
// FrmProjectUserPermissionAdmin frmUserPermissionAdmin = new FrmProjectUserPermissionAdmin();
// frmUserPermissionAdmin.Show();

// 角色权限(项目权限)
// FrmProjectRolePermissionAdmin frmRolePermissionAdmin = new FrmProjectRolePermissionAdmin();
// frmRolePermissionAdmin.Show();

// 设置权限参考
// FrmResourceSetPermission frmResourceSetPermission = new FrmResourceSetPermission();
// frmResourceSetPermission.Show();

// 树型资源权限
// FrmTreeResourcePermission frmTreeResourcePermission = new FrmTreeResourcePermission();
// frmTreeResourcePermission.Show();

// 用户权限(字段权限)
// FrmTableColumnsUserPermissionAdmin frmUserPermissionAdmin = new FrmTableColumnsUserPermissionAdmin();
// frmUserPermissionAdmin.Show();

// 角色权限(字段权限)
// FrmTableColumnsRolePermissionAdmin frmRolePermissionAdmin = new FrmTableColumnsRolePermissionAdmin();
// frmRolePermissionAdmin.Show();

this.CallMessager();
}

#region private void CheckMenu() 获得的菜单
/// <summary>
/// 获得的菜单
/// </summary>
public void CheckMenu()
{
this.contextMenuStrip.Tag = null;
// 申请账户
this.CheckMenuItem(this.mitmFrmRequestAnAccount);
// 账户审核
this.CheckMenuItem(this.mitmFrmUserAudit);
// 用户管理
this.CheckMenuItem(this.mitmFrmUserAdmin);
this.mtspUserAdmin.Visible = this.mitmFrmRequestAnAccount.Visible || this.mitmFrmUserAudit.Visible || this.mitmFrmUserAdmin.Visible;

// 扮演用户
this.CheckMenuItem(this.mitmFrmImpersonation);
// 用户授权
this.CheckMenuItem(this.mitmFrmAccredit);
this.mtspImpersonation.Visible = this.mitmFrmAccredit.Visible || this.mitmFrmImpersonation.Visible;

// 组织机构管理
this.CheckMenuItem(this.mitmFrmOrganizeAdmin);
// 职员管理
this.CheckMenuItem(this.mitmFrmStaffAdmin);
// 角色管理
this.CheckMenuItem(this.mitmFrmRoleAdmin);

this.mtspStaff.Visible = this.mitmFrmOrganizeAdmin.Visible
|| this.mitmFrmStaffAdmin.Visible
|| this.mitmFrmRoleAdmin.Visible;

// 权限部分
this.CheckMenuItem(this.mitmFrmPermissionItemAdmin);
this.CheckMenuItem(this.mitmFrmModuleAdmin);
this.CheckMenuItem(this.mitmFrmUserPermissionAdmin);
this.mtspPermission.Visible = this.CheckMenuItem(this.mitmFrmPermissionItemAdmin)
|| this.CheckMenuItem(this.mitmFrmModuleAdmin)
|| this.CheckMenuItem(this.mitmFrmUserPermissionAdmin);

// 我的联系方式
this.CheckMenuItem(this.mitmFrmStaffAddressEdit);
// 内部通讯录
this.CheckMenuItem(this.mitmFrmStaffAddressAdmin);
// 没有员工帐号，这个就不显示了
this.mitmFrmStaffAddressEdit.Visible = !String.IsNullOrEmpty(UserInfo.StaffId);

this.mtspStaffAddress.Visible = this.mitmFrmStaffAddressAdmin.Visible
|| this.mitmFrmStaffAddressEdit.Visible;

// 发送消息
this.CheckMenuItem(this.mitmFrmMessageSend);
// 即时通讯
this.CheckMenuItem(this.mitmFrmMessage);
this.mtspMessage.Visible = this.mitmFrmMessageSend.Visible || this.mitmFrmMessage.Visible;

// 业务应用
this.CheckMenuItem(this.mitmAppliction);
if (this.mitmAppliction.Visible)
{
// 工作日志管理
this.CheckMenuItem(this.mitmFrmWorkReportAdd);
this.CheckMenuItem(this.mitmFrmWorkReportList);
this.CheckMenuItem(this.mitmFrmWorkReportManger);
this.mtspWorkReport.Visible = this.CheckMenuItem(this.mitmFrmWorkReportAdd) || this.CheckMenuItem(this.mitmFrmWorkReportList) || this.CheckMenuItem(this.mitmFrmWorkReportManger);

// 文档管理
this.CheckMenuItem(this.mitmFrmFileAdmin);
// this.mtspFileAdmin.Visible = this.CheckMenuItem(this.mitmFrmFileAdmin);
this.mtspFileAdmin.Visible = this.CheckMenuItem(this.mitmFrmFileAdmin) && (this.CheckMenuItem(this.mitmFrmBusinessCardAdmin));

// 名片管理
this.CheckMenuItem(this.mitmFrmBusinessCardAdmin);

this.mtspStaffAddress.Visible = this.mtspWorkReport.Visible || this.mtspFileAdmin.Visible || this.CheckMenuItem(this.mitmFrmBusinessCardAdmin);
}

// 工作流管理
this.CheckMenuItem(this.mitmFrmWorkFlowWaitForAudit);
this.CheckMenuItem(this.mitmFrmWorkFlowMonitor);
this.CheckMenuItem(this.mitmFrmWorkFlowProcessAdmin);
this.mitmWorkFlow.Visible = this.CheckMenuItem(this.mitmFrmWorkFlowWaitForAudit)
|| this.CheckMenuItem(this.mitmFrmWorkFlowMonitor)
|| this.CheckMenuItem(this.mitmFrmWorkFlowProcessAdmin);

// 基础编码管理
this.CheckMenuItem(this.mitmFrmItemsAdmin);
// 这个默认情况下，不会显示，显示状态也不能赋值，要注意
this.CheckMenuItem(this.mitmFrmSequenceAdmin);
// 代码生成器
this.CheckMenuItem(this.mitmFrmCodeGenerator);
this.mtspAppliction.Visible = this.mitmAppliction.Visible
|| this.mitmFrmCodeGenerator.Visible
|| this.CheckMenuItem(this.mitmFrmItemsAdmin)
|| this.CheckMenuItem(this.mitmFrmSequenceAdmin);

// 系统日志部分
this.CheckMenuItem(this.mitmLogAdmin);
if (this.mitmLogAdmin.Visible)
{
// 这个默认情况下，不会显示，显示状态也不能赋值，要注意
this.CheckMenuItem(this.mitmFrmLogGeneral);
this.CheckMenuItem(this.mitmFrmLogByDate);
this.CheckMenuItem(this.mitmFrmLogByModule);
this.CheckMenuItem(this.mitmFrmLogByUser);
this.CheckMenuItem(this.mitmFrmExceptionAdmin);
this.mitmLogAdmin.Visible = this.CheckMenuItem(this.mitmFrmLogGeneral) || this.CheckMenuItem(this.mitmFrmLogByDate) || this.CheckMenuItem(this.mitmFrmLogByModule) || this.CheckMenuItem(this.mitmFrmLogByUser);
this.mitmLogAdmin.Enabled = this.mitmLogAdmin.Visible;
}

this.mtspLog.Visible = this.mitmLogAdmin.Visible;

// 我的权限
this.CheckMenuItem(this.mitmFrmUserPermission);
// 修改密码
this.CheckMenuItem(this.mitmFrmUserChangePassword);

// 在线支持
this.CheckMenuItem(this.mitmFrmOnlineEmailSupport);
// 关于本软件
this.CheckMenuItem(this.mitmFrmAboutThis);
this.mtspSupport.Visible = this.mitmFrmOnlineEmailSupport.Visible || this.mitmFrmAboutThis.Visible;
}
#endregion

#region private bool CheckMenuItem(ToolStripMenuItem toolStripMenuItem)
/// <summary>
/// 检查菜单的权限及有效性
/// </summary>
/// <param name="toolStripMenuItem">菜单项</param>
private bool CheckMenuItem(ToolStripMenuItem toolStripMenuItem)
{
bool returnValue = true;
string moduleCode = toolStripMenuItem.Name.Substring(4);
returnValue = this.ModuleIsVisible(moduleCode);
toolStripMenuItem.Visible = returnValue;
// 已经是可见的，再判断是否有效的？若这么写，就错了
// if (toolStripMenuItem.Visible)
//{
if (UserInfo.IsAdministrator)
{
toolStripMenuItem.Enabled = true;
}
else
{
toolStripMenuItem.Enabled = this.ModuleIsAuthorized(moduleCode);
// 没有权限的，进行隐藏处理
// toolStripMenuItem.Visible = toolStripMenuItem.Enabled;
}
// }
return returnValue;
}
#endregion

// 定义与方法同签名的委托
private delegate void CallFormMessager(bool show);

#region public void InitForm() 显示状态信息
/// <summary>
/// 初始化窗体
/// </summary>
public void InitForm()
{
// 是总共有几个模块
ClientCache.Instance.DTMoule = ServiceManager.Instance.ModuleService.GetDT(UserInfo);
//if (!UserInfo.IsAdministrator)
//{

// 当前的用户可以访问的模块的
ClientCache.Instance.DTUserMoule = ServiceManager.Instance.PermissionService.GetModuleDTByUser(UserInfo, UserInfo.Id);
//}

// 获得当前操作员的权限
ClientCache.Instance.DTPermission = null;
ClientCache.Instance.GetPermission(UserInfo);

// 获得页面的权限
// this.GetPermission();

// CallFormMessager CallFormMessager = new CallFormMessager(CallMessager);
// CallFormMessager.BeginInvoke(false, null, null);
// 这里是呼叫即时通讯部分
this.CallMessager(false);
}
#endregion

private void MainForm_Load(object sender, EventArgs e)
{
// this.ucAttachment.DataBind(UserInfo, "10000000", false);
// this.InitForm();
}

private void contextMenuStrip_Opened(object sender, EventArgs e)
{
if (this.contextMenuStrip.Tag == null)
{
this.CheckMenu();
// this.contextMenuStrip.Tag = "Loaded";
}
}

private void mItemExit_Click(object sender, EventArgs e)
{
this.ExitApplication = true;
this.Close();
}

protected override void WndProc(ref System.Windows.Forms.Message message)
{

switch (message.Msg)
{

case 17:
// 退出应用程序

this.ExitApplication = true;
ServiceManager.Instance.LogOnService.OnExit(UserInfo);
this.Dispose();
break;
default:
base.WndProc(ref message);
break;
}
}

private void MainForm_FormClosed(object sender, FormClosedEventArgs e)
{
Application.Exit();
}

private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (!this.ExitApplication)
{
e.Cancel = true;
this.Hide();
}
else
{
if (MessageBox.Show(AppMessage.MSG0204, AppMessage.MSG0000, MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.No)
{
e.Cancel = true;
return;
}
if (Program.frmMessage != null)
{
Program.frmMessage.ExitApplication = true;
Program.frmMessage.Dispose();
}
// 退出应用程序
ServiceManager.Instance.LogOnService.OnExit(UserInfo);
}
}
}
}