gnome桌面环境 kde桌面环境的区别？如何调用bindingNavigator添加事件

过去的GNOME 2.low.x与KDE 3.x 当时，两大桌面环境除了共同使用freedesktop制定的desktop文件的标准以外，每种东西都有自己的实现办法。抛开底层的开发库GTK ＋和QT不算，声音服务方面，GNOME用的是esd，KDE用的是arts，虚拟文件系统，GNOME用的是gnome-vfs，KDE用的是KIO等等.现在的GNOME 2.high.x与KDE 4 然后到了2008年，KDE 4发布了，GNOME 2.X高版本中，也引入了新的特性，去除了旧特性，两大桌面环境的共同点也越来越多了。 统一的systray（通知区域图标机制），scim输入法框架，fontconfig字体配置工具，D-Bus应用程序通讯机制，poppler PDF文档渲染库，gstreamer多媒体框架，pulseaudio声音服务等。 两大桌面环境共同使用了这么多相关技术，使得彼此之间兼容性和互通性大大增强了。 最后，也就是这次Guademy会议的重点，两大桌面环境，应该在哪些领域做更进一步的技术分享，从而到达一个更高的境界：未来的Linux桌面环 境，不分什么GNOME与KDE了，所有的区别，只是应用程序用了什么开发库而已（GTK＋或QT）。所有与桌面相关的特性，都已统一，用户所关心的，只 是选择自己喜欢的应用程序和把桌面环境定制成自己想要的样子！

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Data.SqlClient;using System.Windows.Forms;// This form demonstrates using a BindingNavigator to display // rows from a database query sequentially.public class Form1 : Form{ // This is the BindingNavigator that allows the user // to navigate through the rows in a DataSet. BindingNavigator customersBindingNavigator = new BindingNavigator(); // This is the BindingSource that provides data for // the Textbox control. BindingSource customersBindingSource = new BindingSource(); // This is the TextBox control that displays the CompanyName // field from the the DataSet. TextBox companyNameTextBox = new TextBox(); public Form1() { // Set up the BindingSource component. this.customersBindingNavigator.BindingSource = this.customersBindingSource; this.customersBindingNavigator.Dock = DockStyle.Top; this.Controls.Add(this.customersBindingNavigator); // Set up the TextBox control for displaying company names. this.companyNameTextBox.Dock = DockStyle.Bottom; this.Controls.Add(this.companyNameTextBox); // Set up the form. this.Size = new Size(800, 200); this.Load += new EventHandler(Form1_Load); } void Form1_Load(object sender, EventArgs e) { // Open a connection to the database. // Replace the value of connectString with a valid // connection string to a Northwind database accessible // to your system. string connectString = “Integrated Security=SSPI;Persist Security Info=False;“ + “Initial Catalog=Northwind;Data Source=localhost“; SqlConnection connection = new SqlConnection(); connection.ConnectionString = connectString; connection.Open(); // Execute the query. SqlCommand command = new SqlCommand( “Select * From Customers“, connection); SqlDataReader reader = command.ExecuteReader( CommandBehavior.CloseConnection); // Load the Customers result set into the DataSet. DataSet ds = new DataSet(“Northwind Customers“); ds.Load( reader, LoadOption.OverwriteChanges, new string { “Customers“ }); // Assign the DataSet as the DataSource for the BindingSource. this.customersBindingSource.DataSource = ds; // Bind the CompanyName field to the TextBox control. this.companyNameTextBox.DataBindings.Add( new Binding(“Text“, this.customersBindingSource, “CompanyName“, true)); }}