#region//把datagridview中的数据全部导出到EXCEL
        /// <summary>
        /// 把datagridview中的数据全部导出到EXCEL
        /// </summary>
        /// <param name="dg1"></param>
        public static void CopyToExcel(DataGridView dg1)
        {
            dg1.SelectAll();
            Application.DoEvents();
            Clipboard.SetText(dg1.GetClipboardContent().GetData(DataFormats.Text).ToString());            
            object oMissing = System.Reflection.Missing.Value;
            try
            {
                Excel._Worksheet Sht;
                Excel._Workbook Bo;
                Excel.Application excel = new Excel.Application();
                Bo = excel.Application.Workbooks.Add(true);
                Sht = (Excel.Worksheet)Bo.Sheets[1];
                Sht.Paste(oMissing, oMissing);
                excel.Visible = true;
                excel = null;
            }
            catch (Exception ex)
            {
                ex.ToString();
            }
            finally
            {
            }
        }
        #endregion
        #region//把datagridview中选择的数据全部导出到EXCEL
        /// <summary>
        /// 把datagridview中选择的数据全部导出到EXCEL
        /// </summary>
        /// <param name="dg1"></param>
        public static void CopyToExcelSelect(DataGridView dg1)
        {
            if (dg1.Rows.Count < 1)
                return;
            Clipboard.SetText(dg1.GetClipboardContent().GetData(DataFormats.Text).ToString());
            object oMissing = System.Reflection.Missing.Value;
            try
            {
                Excel._Worksheet Sht;
                Excel._Workbook Bo;
                Excel.Application excel = new Excel.Application();
                Bo = excel.Application.Workbooks.Add(true);
                Sht = (Excel.Worksheet)Bo.Sheets[1];
                Sht.Paste(oMissing, oMissing);
                excel.Visible = true;
                excel = null;
            }
            catch (Exception ex)
            {
                ex.ToString();
            }
            finally
            {
            }
        }
        #endregion