using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace System.Windows.Forms.Samples{ public partial class Form1 : Form {  public Form1()  {   InitializeComponent();  }  private void Form1_Load(object sender, EventArgs e)  {   /* Create a DataSet with 1 DataTable */   DataSet  dataSet = new DataSet();   DataTable dataTable = dataSet.Tables.Add("Numbers");   dataTable.Columns.Add("ID", typeof(int));   dataTable.Columns.Add("Name", typeof(string));   dataTable.Rows.Add(0, "Zero");   dataTable.Rows.Add(1, "One");   CurrencyManager cm;   /* Get a CurrencyManager */   // cm = (this.BindingContext[dataSet, "Numbers"] as CurrencyManager);   /* This gets a different CurrencyManager */   cm = (this.BindingContext[dataTable] as CurrencyManager);   /* Bind left DataGridView and TextBox */   this.dataGridView1.DataSource = dataSet;   this.dataGridView1.DataMember = "Numbers";   this.textBox1.DataBindings.Add("Text", dataSet, "Numbers.Name", true);   /* Bind left DataGridView and TextBox */   this.dataGridView2.DataSource = dataTable;   this.textBox2.DataBindings.Add("Text", dataTable, "Name", true);  } }}