[求助]怎样实现打印预览和打印DataGrid中的数据？？？

using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;

namespace DataGridPrint
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.DataGrid dgTest;
private System.Windows.Forms.Button btnFillDataGrid;
private System.Windows.Forms.MainMenu mnuFile;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem miPrintPreview;
private System.Windows.Forms.MenuItem miPrint;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem miExit;
private System.Windows.Forms.DataGridTableStyle dgtsCustomers;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn1;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn2;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn3;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn4;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn6;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn7;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn8;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn9;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn10;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn11;
private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn5;
private System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1;
private System.Data.SqlClient.SqlCommand sqlSelectCommand1;
private System.Data.SqlClient.SqlCommand sqlInsertCommand1;
private System.Data.SqlClient.SqlCommand sqlUpdateCommand1;
private System.Data.SqlClient.SqlCommand sqlDeleteCommand1;
private System.Data.SqlClient.SqlConnection sqlConnection1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();