C#应用BindingSource实现数据同步的方法

// Declare the controls to be used.private BindingSource bindingSource1;private TextBox textBox1;private TextBox textBox2;private DataGridView dataGridView1;private void InitializeControlsAndDataSource(){  // Initialize the controls and set location, size and   // other basic properties.  this.dataGridView1 = new DataGridView();  this.bindingSource1 = new BindingSource();  this.textBox1 = new TextBox();  this.textBox2 = new TextBox();  this.dataGridView1.ColumnHeadersHeightSizeMode =    DataGridViewColumnHeadersHeightSizeMode.AutoSize;  this.dataGridView1.Dock = DockStyle.Top;  this.dataGridView1.Location = new Point(0, 0);  this.dataGridView1.Size = new Size(292, 150);  this.textBox1.Location = new Point(132, 156);  this.textBox1.Size = new Size(100, 20);  this.textBox2.Location = new Point(12, 156);  this.textBox2.Size = new Size(100, 20);  this.ClientSize = new Size(292, 266);  this.Controls.Add(this.textBox2);  this.Controls.Add(this.textBox1);  this.Controls.Add(this.dataGridView1);  // Declare the DataSet and add a table and column.  DataSet set1 = new DataSet();  set1.Tables.Add("Menu");  set1.Tables[0].Columns.Add("Beverages");  // Add some rows to the table.  set1.Tables[0].Rows.Add("coffee");  set1.Tables[0].Rows.Add("tea");  set1.Tables[0].Rows.Add("hot chocolate");  set1.Tables[0].Rows.Add("milk");  set1.Tables[0].Rows.Add("orange juice");  // Set the data source to the DataSet.  bindingSource1.DataSource = set1;  //Set the DataMember to the Menu table.  bindingSource1.DataMember = "Menu";  // Add the control data bindings.  dataGridView1.DataSource = bindingSource1;  textBox1.DataBindings.Add("Text", bindingSource1,     "Beverages", true, DataSourceUpdateMode.OnPropertyChanged);  textBox2.DataBindings.Add("Text", bindingSource1,     "Beverages", true, DataSourceUpdateMode.OnPropertyChanged);  bindingSource1.BindingComplete +=     new BindingCompleteEventHandler(bindingSource1_BindingComplete);}private void bindingSource1_BindingComplete(object sender, BindingCompleteEventArgs e){  // Check if the data source has been updated, and that no error has occured.  if (e.BindingCompleteContext ==     BindingCompleteContext.DataSourceUpdate && e.Exception == null)    // If not, end the current edit.    e.Binding.BindingManagerBase.EndCurrentEdit();}

using System;using System.Drawing;using System.Windows.Forms;using System.Data;namespace BindingSourceMultipleForms{  public class MainForm : Form  {    public MainForm()    {      this.Load += new EventHandler(MainForm_Load);    }    private BindingSource bindingSource1;    private Button button1;    private void MainForm_Load(object sender, EventArgs e)    {      InitializeData();    }    private void InitializeData()    {      bindingSource1 = new System.Windows.Forms.BindingSource();      // Handle the BindingComplete event to ensure the two forms      // remain synchronized.      bindingSource1.BindingComplete +=         new BindingCompleteEventHandler(bindingSource1_BindingComplete);      ClientSize = new System.Drawing.Size(292, 266);      DataSet dataset1 = new DataSet();      // Some xml data to populate the DataSet with.      string musicXml =        "<?xml version='1.0' encoding='UTF-8'?>" +        "<music>" +         "<recording><artist>Dave Matthews</artist>" +         "<cd>Under the Table and Dreaming</cd>" +          "<releaseDate>1994</releaseDate><rating>3.5</rating></recording>" +         "<recording><artist>Coldplay</artist><cd>X&Y</cd>" +          "<releaseDate>2005</releaseDate><rating>4</rating></recording>" +         "<recording><artist>Dave Matthews</artist>" +          "<cd>Live at Red Rocks</cd>" +          "<releaseDate>1997</releaseDate><rating>4</rating></recording>" +         "<recording><artist>U2</artist>" +          "<cd>Joshua Tree</cd><releaseDate>1987</releaseDate>" +          "<rating>5</rating></recording>" +         "<recording><artist>U2</artist>" +         "<cd>How to Dismantle an Atomic Bomb</cd>" +          "<releaseDate>2004</releaseDate><rating>4.5</rating></recording>" +         "<recording><artist>Natalie Merchant</artist>" +         "<cd>Tigerlily</cd><releaseDate>1995</releaseDate>" +         "<rating>3.5</rating></recording>" +         "</music>";      // Read the xml.      System.IO.StringReader reader = new System.IO.StringReader(musicXml);      dataset1.ReadXml(reader);       // Get a DataView of the table contained in the dataset.      DataTableCollection tables = dataset1.Tables;      DataView view1 = new DataView(tables[0]);      // Create a DataGridView control and add it to the form.      DataGridView datagridview1 = new DataGridView();      datagridview1.ReadOnly = true;      datagridview1.AutoGenerateColumns = true;      datagridview1.Width = 300;      this.Controls.Add(datagridview1);      bindingSource1.DataSource = view1;      datagridview1.DataSource = bindingSource1;      datagridview1.Columns.Remove("artist");      datagridview1.Columns.Remove("releaseDate");      // Create and add a button to the form.       button1 = new Button();      button1.AutoSize = true;      button1.Text = "Show/Edit Details";      this.Controls.Add(button1);      button1.Location = new Point(50, 200);      button1.Click += new EventHandler(button1_Click);    }    // Handle the BindingComplete event to ensure the two forms    // remain synchronized.    private void bindingSource1_BindingComplete(object sender, BindingCompleteEventArgs e)    {      if (e.BindingCompleteContext == BindingCompleteContext.DataSourceUpdate        && e.Exception == null)        e.Binding.BindingManagerBase.EndCurrentEdit();    }    // The detailed form will be shown when the button is clicked.    private void button1_Click(object sender, EventArgs e)    {      DetailForm detailForm = new DetailForm(bindingSource1);      detailForm.Show();    }    [STAThread]    static void Main()    {      Application.EnableVisualStyles();      Application.Run(new MainForm());    }  }  // The detail form class.   public class DetailForm : Form  {    private BindingSource formDataSource;    // The constructor takes a BindingSource object.    public DetailForm(BindingSource dataSource)    {      formDataSource = dataSource;      this.ClientSize = new Size(240, 200);      TextBox textBox1 = new TextBox();      this.Text = "Selection Details";      textBox1.Width = 220;      TextBox textBox2 = new TextBox();      TextBox textBox3 = new TextBox();      TextBox textBox4 = new TextBox();      textBox4.Width = 30;      textBox3.Width = 50;      // Associate each text box with a column from the data source.      textBox1.DataBindings.Add("Text", formDataSource, "cd", true, DataSourceUpdateMode.OnPropertyChanged);      textBox2.DataBindings.Add("Text", formDataSource, "artist", true);      textBox3.DataBindings.Add("Text", formDataSource, "releaseDate", true);      textBox4.DataBindings.Add("Text", formDataSource, "rating", true);      textBox1.Location = new Point(10, 10);      textBox2.Location = new Point(10, 40);      textBox3.Location = new Point(10, 80);      textBox4.Location = new Point(10, 120);      this.Controls.AddRange(new Control[] { textBox1, textBox2, textBox3, textBox4 });    }  }}