mainform.cs

datagridview source code! cac ban tham khao nhe

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

namespace PrintDataGrid
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            // Declare dataBase variables
            string cnStr, cmdText;
            cnStr = "Provider=Microsoft.Jet.OLEDB.4.0;" + 
                    "Data Source= Northwind.mdb";
            OleDbConnection cn = new OleDbConnection(cnStr);
            OleDbCommand cmd;
            OleDbDataReader dr;
            DataTable dt = new DataTable("Orders");
            try
            {
                cn.Open();

                // Load Data into DataGrid
                cmdText = "SELECT * FROM Orders";
                cmd = new OleDbCommand(cmdText, cn);
                dr = cmd.ExecuteReader();
                if (dr.HasRows) dt.Load(dr);
                dr.Close();

                dg.DataSource = dt;

                // Define a DataGrid TableStyle and add it to DataGrid
                DataGridTableStyle ts = new DataGridTableStyle();
                ts.MappingName = dt.TableName;
                dg.TableStyles.Add(ts);
                foreach (DataGridTextBoxColumn txtcol in ts.GridColumnStyles)
                {
                    txtcol.NullText = "";
                    txtcol.ReadOnly = true;
                }
                ts.RowHeadersVisible = false;
                ts.BackColor = Color.Yellow;             // Odd rows
                ts.AlternatingBackColor = Color.Yellow;  // Even rows        		
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                cn.Close();
                cn = null;
            }
        }

        private void btnPrint_Click(object sender, EventArgs e)
        {
            // Calling Datagrid Printing
            PrintDG.Print_DataGrid(dg);
        }
    }
}