WinForm 2.0 有代码两个DataGridView实现Master/Details

   private void GetData()
    {
        try
        {
            // Specify a connection string. Replace the given value with a
            // valid connection string for a Northwind SQL Server sample
            // database accessible to your system.
            String connectionString =
                "Integrated Security=SSPI;Persist Security Info=False;" +
                "Initial Catalog=Northwind;Data Source=localhost";
            SqlConnection connection = new SqlConnection(connectionString);

            // Create a DataSet.
            DataSet data = new DataSet();
            data.Locale = System.Globalization.CultureInfo.InvariantCulture;

            // Add data from the Customers table to the DataSet.
            SqlDataAdapter masterDataAdapter = new
                SqlDataAdapter("select * from Customers", connection);
            masterDataAdapter.Fill(data, "Customers");

            // Add data from the Orders table to the DataSet.
            SqlDataAdapter detailsDataAdapter = new
                SqlDataAdapter("select * from Orders", connection);
            detailsDataAdapter.Fill(data, "Orders");

            // Establish a relationship between the two tables.
            DataRelation relation = new DataRelation("CustomersOrders",
                data.Tables["Customers"].Columns["CustomerID"],
                data.Tables["Orders"].Columns["CustomerID"]);
            data.Relations.Add(relation);

            // Bind the master data connector to the Customers table.
            this.bindingSource1.DataSource = data;
            this.bindingSource1.DataMember = "Customers";

            // Bind the details data connector to the master data connector,
            // using the DataRelation name to filter the information in the
            // details table based on the current row in the master table.
            this.bindingSource2.DataSource = bindingSource1;
            this.bindingSource2.DataMember = "CustomersOrders";
        }
        catch (SqlException)
        {
            MessageBox.Show("To run this example, replace the value of the " +
                "connectionString variable with a connection string that is " +
                "valid for your system.");
        }
    }

        private void Form1_Load(object sender, EventArgs e)
        {
            // Bind the DataGridView controls to the BindingSource
            // components and load the data from the database.
            this.dataGridView1 .DataSource = bindingSource1;
            this.dataGridView2.DataSource = bindingSource2;
            GetData();

            // Resize the master DataGridView columns to fit the newly loaded data.
            dataGridView1.AutoResizeColumns();

            // Configure the details DataGridView so that its columns automatically
            // adjust their widths when the data changes.
            dataGridView2.AutoSizeColumnsMode =
                DataGridViewAutoSizeColumnsMode.AllCells;
            this.bindingNavigator1.BindingSource = this.bindingSource1;
        }