using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using WeifenLuo.WinFormsUI.Docking;  namespace VehicleMonitorSystem
{  public partial class FrmMain : Form  {          #region 字段  private string m_DockPath = string.Empty;  #endregion  #region 构造函数  public FrmMain()  {  InitializeComponent();  }  #endregion  #region 主窗体加载  private void FrmMain_Load(object sender, EventArgs e)  {  this.DockPanelOfFrmMain.DocumentStyle = DocumentStyle.DockingMdi;  this.m_DockPath = Path.Combine(Path.GetDirectoryName(Application.ExecutablePath), "DockPanel.config");  this.InitDockPanel();  this.StatusBarOfFrmMain.Items.Add("就绪");              }  #endregion  #region DockPanel初始化与配置保存  #region 按照配置文件初始化Dockpanel  private void InitDockPanel()  {  try  {  //根据配置文件动态加载浮动窗体  this.DockPanelOfFrmMain.LoadFromXml(this.m_DockPath, delegate(string persistString)  {  //功能窗体  if (persistString == typeof(FrmFunction).ToString())  {  return FrmFunction.GetInstance();  }  //主框架之外的窗体不显示  return null;  });  }  catch (Exception)  {  //配置文件不存在或配置文件有问题时 按系统默认规则加载子窗体  FrmFunction.GetInstance().Show(this.DockPanelOfFrmMain, AppConfig.ms_FrmFunction);  }  }  #endregion  #region 关闭窗体时保存界面。为了下次打开程序时，浮动窗体的显示位置和关闭时一致，可以在主窗体的frmMain_FormClosing事件中调用：dockPanel.SaveAsXml(this.m_DockPath)  private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)  {  try  {  DockPanelOfFrmMain.SaveAsXml(this.m_DockPath);  }  catch (Exception ex)  {  MessageBox.Show("保存Dockpanel配置文件失败，" + ex.Message);  return;  }  }  #endregion     #region 退出  private void 退出EToolStripMenuItem_Click(object sender, EventArgs e)  {  this.Close();  }  #endregion  #region 关于  private void 关于AToolStripMenuItem_Click(object sender, EventArgs e)  {  MessageBox.Show(" DockPanel Suite V2.1.3364.29178 \n\n VehicleMonitorSystem V1.0.0 \n\n Created by 张月华 \n\n E-mail：yichangzyh@163.com \n\n Date:2011-10-10", "车辆监控系统");  }  #endregion  #endregion  }
}  

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using WeifenLuo.WinFormsUI.Docking;  namespace VehicleMonitorSystem
{  public partial class FrmFunction : DockContent   // 浮动窗体和标签窗体需要继承自DockContent
    {  #region 字段  private static FrmFunction Instance;  #endregion  #region 构造函数  public FrmFunction()  {  InitializeComponent();  }  #endregion          #region 静态实例初始化函数  public static FrmFunction GetInstance()  {  if (Instance == null)  {  Instance = new FrmFunction();  }  return Instance;  }  #endregion  #region 为了保证在关闭某一浮动窗体之后，再打开时能够在原位置显示，要对浮动窗体处理，处理窗体的DockstateChanged事件，标签窗体dock位置改变，记录到公共类  private void FrmFunction_DockStateChanged(object sender, EventArgs e)  {  //关闭时（dockstate为unknown） 不把dockstate保存  if (Instance != null)  {  if (this.DockState == DockState.Unknown || this.DockState == DockState.Hidden)  {  return;  }  AppConfig.ms_FrmFunction = this.DockState;  }  }  #endregion  #region 关闭事件  private void FrmFunction_FormClosed(object sender, FormClosedEventArgs e)  {  Instance = null;  // 否则下次打开时报错，提示“无法访问已释放对象”
        }  #endregion  }
}  

#region 显示功能窗  private void 功能窗ToolStripMenuItem_Click(object sender, EventArgs e)  {  this.ShowFrmFunction();  }     private void ShowFrmFunction()  {  FrmFunction frmFun = FrmFunction.GetInstance();            frmFun.Show(this.DockPanelOfFrmMain, AppConfig.ms_FrmFunction);  this.StatusBarOfFrmMain.Items[0].Text = frmFun.Text;  }
#endregion  

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using WeifenLuo.WinFormsUI.Docking;  namespace VehicleMonitorSystem
{  class AppConfig  {  #region 字段  public static DockState ms_FrmFunction = DockState.DockLeft;   // 功能窗体，左端停靠   #endregion  }
}  

private void FrmMain_Load(object sender, EventArgs e)  {     ...  this.m_DockPath = Path.Combine(Path.GetDirectoryName(Application.ExecutablePath), "DockPanel.config");  this.InitDockPanel();   ...             }  

#region 按照配置文件初始化Dockpanel  private void InitDockPanel()  {  try  {  //根据配置文件动态加载浮动窗体  this.DockPanelOfFrmMain.LoadFromXml(this.m_DockPath, delegate(string persistString)  {  //功能窗体  if (persistString == typeof(FrmFunction).ToString())  {  return FrmFunction.GetInstance();  }                      //主框架之外的窗体不显示  return null;  });  }  catch (Exception)  {  // 配置文件不存在或配置文件有问题时 按系统默认规则加载子窗体  // 注：在此加入的特殊处理，来改进Dockpanel 的加载，如果dockpanel.config不存在（不小心删除了），可以按照Appconfig中预定义的dockstate显示。
  FrmFunction.GetInstance().Show(this.DockPanelOfFrmMain, AppConfig.ms_FrmFunction);                  }  }  #endregion  

#region 关闭窗体时保存界面。为了下次打开程序时，浮动窗体的显示位置和关闭时一致，可以在主窗体的frmMain_FormClosing事件中调用：dockPanel.SaveAsXml(this.m_DockPath)  private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)  {  try  {  DockPanelOfFrmMain.SaveAsXml(this.m_DockPath);  }  catch (Exception ex)  {  MessageBox.Show("保存Dockpanel配置文件失败，" + ex.Message);  return;  }  }  #endregion