private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Microsoft.Office.Interop.Excel.Application ExcelApp =
                    new Microsoft.Office.Interop.Excel.Application();
            Microsoft.Office.Interop.Excel.Workbook ExcelWorkBook;
            Microsoft.Office.Interop.Excel.Worksheet ExcelWorkSheet;
            //Книга.
            ExcelWorkBook = ExcelApp.Workbooks.Add(System.Reflection.Missing.Value);
            //Таблица.
            ExcelWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)ExcelWorkBook.Worksheets.get_Item(1);
            for (int i = 0; i < dgvCustomer.ColumnCount; i++)
            {
                ExcelApp.Cells[1, i + 1] = Convert.ToString(dgvCustomer.Columns[i].HeaderText);
            }
            for (int i = 0; i < dgvCustomer.Rows.Count; i++)
            {
                for (int j = 0; j < dgvCustomer.ColumnCount; j++)
                {
                    if (i==8)
                    {
                        Image data = ConvertBinaryToImage((byte[])dgvCustomer.Rows[4].Cells[0].Value);
                        Clipboard.SetImage(data);
                    }
                    ExcelApp.Cells[i + 2, j + 1] = Convert.ToString(dgvCustomer.Rows[i].Cells[j].Value);
                }
            }
            int iLastRow = ExcelWorkSheet.Cells[ExcelWorkSheet.Rows.Count, "A"].End[Excel.XlDirection.xlUp].Row;
            for (int i = iLastRow; i >= 0; i--)
            {
                //ExcelWorkSheet.Cells[7].Delete();
                ExcelWorkSheet.Cells[8].Delete();
                ExcelWorkSheet.Cells[9].Delete();
            }
            for (int c = 1; c < 8; c++)
            {
                (ExcelWorkSheet.Rows[1].Cells[c] as Microsoft.Office.Interop.Excel.Range).Interior.Color = Color.LightGray;
                ExcelWorkSheet.Cells[1, c].HorizontalAlignment = 3;
            }
            for (int k = 2; k <= dgvCustomer.RowCount + 1; k++)
            {
                ExcelWorkSheet.Cells[k, 6].NumberFormat = ("+###\" \"(00) 000\"-\"00\"-\"00");
                // экранирование для формата номера
                // +###" "(00) 000"-"00"-"00
                ExcelWorkSheet.Hyperlinks.Add(ExcelWorkSheet.Cells[k, 7], ExcelWorkSheet.Cells[k, 7], Type.Missing, "Гиперссылка на картинку");
            }
            //ExcelWorkSheet.Shapes.AddPicture("D:\\test.png", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 0, 0, 80, 70);

            //label4.Text = string.Format("Total rows: {0}", dgvCustomer.RowCount.ToString());
            ExcelWorkSheet.Columns.AutoFit();

            Microsoft.Office.Interop.Excel.Range tRange = ExcelWorkSheet.UsedRange;
            tRange.Borders.LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;
            tRange.Borders.Weight = Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin;

            for (int t = dgvCustomer.RowCount + 2; t <= dgvCustomer.RowCount + 2; t++)
            {
                ExcelWorkSheet.Cells[t, 7] = string.Format("Total rows: {0}", dgvCustomer.RowCount.ToString());
                ExcelWorkSheet.Cells[t, 7].Font.Bold = true;
                ExcelWorkSheet.Cells[t, 7].HorizontalAlignment = Excel.Constants.xlRight;
                //ExcelWorkSheet.Cells[t, 7].Style.Font.Size = 12;
            }

            SaveFileDialog sfd = new SaveFileDialog()
            {
                Filter = "MS Excel dosuments (*.xlsx)|*.xlsx",
                DefaultExt = "*.xlsx",
                Title = "Укажите директорию и имя файла для сохранения"
            };
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                ExcelWorkBook.SaveAs(sfd.FileName);
                ExcelApp.DisplayAlerts = true;
            }
            ExcelWorkBook.Close();
            ExcelApp.Application.Quit();
            ExcelApp.Quit();
            ExcelApp = null;
            ExcelWorkBook = null;
            ExcelWorkSheet = null;
            GC.Collect();
        }