Opacity of datagrid

Sir here i am pasting my code now i want that behind this datagrid  i want to show some text that should be visible throw the datagrid and that text may be a only text or any label's text behind the datagrid.
so want my datagrid as transparent but i have tried. but not succeeded.
please help. 



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class CheckItem : Form
    {
        public CheckItem()
        {
            InitializeComponent();
        }
        

       private DataTable Item = new DataTable("CheckItem");
        private Label lbl = new Label();
        private Label lbl5 = new Label();
       //To drag The Form Without Border
       #region"To drag The Form Without Border"
       const int WM_NCHITTEST = 0x84;
       const int HTCLIENT = 0x1;
       const int HTCAPTION = 0x2;
       protected override void WndProc(ref System.Windows.Forms.Message m)
       {
           switch (m.Msg)
           {
               case WM_NCHITTEST:
                   base.WndProc(ref m);
                   if (m.Result.ToInt32() == HTCLIENT) m.Result = new IntPtr(HTCAPTION);
                   break;
               default:
                   base.WndProc(ref m);
                   break;
           }
       }

       #endregion

       #region"private void CheckItem_Load"
       private void CheckItem_Load(object sender, EventArgs e)
        {
            try
            {
                
                //Fixing the length and position of windows form.
                Screen scr = Screen.PrimaryScreen;
                //this.Left = (scr.WorkingArea.Width - this.Width) / 2;
                //this.Top = (scr.WorkingArea.Height - this.Height) / 2;
                this.MaximumSize = new Size(this.Width, this.Height);
                this.MinimumSize = new Size(this.Width, this.Height);

                // Label
                #region"Label"
               DataGridTableStyle dgStyle = new DataGridTableStyle();
                dgStyle.HeaderBackColor = Color.Chocolate;
                dgStyle.HeaderForeColor = Color.White;
                dgStyle.HeaderFont = new Font("verdana", 8, FontStyle.Bold);
                DataGridTextBoxColumn dgItemCode = new DataGridTextBoxColumn();
                dgItemCode.ReadOnly = true;
                dgItemCode.Width = 80;
                DataGridTextBoxColumn dgItemName = new DataGridTextBoxColumn();
                dgItemName.ReadOnly = true;
                dgItemName.Width = 90;
               DataGridTextBoxColumn dgRecivedQuantity = new DataGridTextBoxColumn();
                dgRecivedQuantity.ReadOnly = true;
                dgRecivedQuantity.Width = 130;
                DataGridTextBoxColumn dgApproved = new DataGridTextBoxColumn();
                dgApproved.Width = 80;
                DataGridTextBoxColumn dgRejected = new DataGridTextBoxColumn();
                dgRejected.Width = 80;
                dgItemCode.HeaderText = "Item Code";
                dgItemCode.MappingName = "ItemCode";

                dgItemName.HeaderText = "Item Name";
                dgItemName.MappingName = "ItemName";

                dgRecivedQuantity.HeaderText = "Recived Quantity";
                dgRecivedQuantity.MappingName = "RecivedQuantity";

                dgApproved.HeaderText = "Approved";
                dgApproved.MappingName = "Approved";

                dgRejected.HeaderText = "Rejected";
                dgRejected.MappingName = "Rejected";
                
                #endregion

                // Create temprarory datatable
                #region"Create temprarory datatable"
                DataTable Item = new DataTable();
                DataRow  dr;
                Item.Columns.Add("ItemCode", typeof(string));
                Item.Columns.Add("ItemName", typeof(string));
                Item.Columns.Add("RecivedQuantity", typeof(Int32));
                Item.Columns.Add("Approved", typeof(Int32));
                Item.Columns.Add("Rejected", typeof(Int32));

                //Add temp datas
                dr = Item.NewRow();
                dr["ItemCode"] = "I007";
                dr["ItemName"] = "RAM";
                dr["RecivedQuantity"] = 1344;
                dr["Approved"] = 904;
                dr["Rejected"] = 220;
                Item.Rows.Add(dr);

                dr = Item.NewRow();
                dr["ItemCode"] = "I004";
                dr["ItemName"] = "RM";
                dr["RecivedQuantity"] = 10;
                dr["Approved"] = 900;
                dr["Rejected"] = 200;
                Item.Rows.Add(dr);

                dr = Item.NewRow();
                dr["ItemCode"] = "I006";
                dr["ItemName"] = "RAM";
                dr["RecivedQuantity"] = 1000;
                dr["Approved"] = 900;
                dr["Rejected"] = 200;
                Item.Rows.Add(dr);
                #endregion

                //Adding Label
                #region"Adding Label"
                Label lbl1 = new Label();
                lbl1.Font = new Font("Verdana", 8, FontStyle.Bold);
                lbl1.BackColor = Color.White;
                lbl1.Left = 50;
                lbl1.Text = " ";
                lbl1.ForeColor = Color.White;

                Label lbl2 = new Label();
                lbl2.Font = new Font("Verdana", 8, FontStyle.Bold);
                lbl2.Left = 50;
                lbl2.Text = " ";
                lbl2.ForeColor = Color.White;

                Label lbl3 = new Label();
                lbl3.Font = new Font("Verdana", 8, FontStyle.Bold);
                lbl3.Left = 50;
                lbl3.Text = " ";
                lbl3.ForeColor = Color.White;

                //Label lbl = new Label();
                lbl.Font = new Font("Verdana", 8, FontStyle.Bold);
                lbl.Text = "*";
                lbl.Left = 50;
                lbl.ForeColor = Color.Red;

                //Label lbl5= new Label();
                lbl5.Font = new Font("Verdana", 8, FontStyle.Bold);
                lbl5.Text = "*";
                lbl5.Left = 50;
                lbl5.ForeColor = Color.Red;
                
                dgItemCode.TextBox.Controls.Add(lbl1);
                dgApproved.TextBox.Controls.Add(lbl);
                dgRejected.TextBox.Controls.Add(lbl5);
                dgItemName.TextBox.Controls.Add(lbl2);
                dgRecivedQuantity.TextBox.Controls.Add(lbl3);
               
                dgStyle.GridColumnStyles.Add(dgItemCode);
                dgStyle.GridColumnStyles.Add(dgItemName);
                dgStyle.GridColumnStyles.Add(dgRecivedQuantity);
                dgStyle.GridColumnStyles.Add(dgApproved);
                dgStyle.GridColumnStyles.Add(dgRejected);
                
                #endregion

                dgStyle.PreferredRowHeight = 24;
                dataGrid1.TableStyles.Add(dgStyle);
               
                //binding datagrid
                dataGrid1.BackColor = Color.Transparent;
                dataGrid1.CaptionText = "Check Item";
                dataGrid1.DataSource = Item;

                //code for combox on pageload event
                cmbPurchaseOrder.SelectedIndex = 0;
                cmbVender.SelectedIndex = 0;
            }
            catch (Exception ex)
            {
                throw ex;
            }

        }
        #endregion


        #region"private void btnReset_Click"

        private void btnReset_Click(object sender, EventArgs e)
        {
            cmbPurchaseOrder.SelectedIndex = 0;
            cmbVender.SelectedIndex = 0;
            BillOfMaterial frm = new BillOfMaterial();
            frm.Show();
        }
        #endregion

        #region"private void btnCancel_Click"

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Dispose();
        }
        #endregion

        private void CheckItem_MouseMove(object sender, MouseEventArgs e)
        {
            lbl.Text = "*";
            lbl.Font = new Font("Verdana", 8, FontStyle.Bold);
            lbl.Text = "*";
            lbl.Left = 50;
            lbl.ForeColor = Color.Red;

            lbl5.Font = new Font("Verdana", 8, FontStyle.Bold);
            lbl5.Text = "*";
            lbl5.Left = 50;
            lbl5.ForeColor = Color.Red;
                
        }

        

        
    }
}

Thanks Sir...

Unlike WPF, Windows Forms controls do not have Opacity property. Here is an article that may help you figure out this problem.

Making Transparent Control using GDI+ and C# (Updated to NET 3.5)