private void ExportToExcel(string FileName)

        {

            if (FileName.IndexOf(".") <= 0)

            {

                FileName = FileName + ".xls";

            }

            else

            {

                string[] str = FileName.Split('.');

                if (str.Length > 2)

                {

                    FileName = str[0] + str[str.Length - 1];

                }

            }





            Excel.Application app;

            try

            {

                app = new Excel.Application();

            }

            catch 

            {

            	ClsCommFuncs.Alert("没有安装Excel程序或者安装错误");

                return;

            }

            app.Workbooks.Add(true);

            app.Visible = false;



            Excel.Workbooks books = (Excel.Workbooks)app.Workbooks;

            Excel.Workbook book = (Excel.Workbook)books.Add(Type.Missing);



            int iget = 1;

            int dwindex = 0;

            //写头

            if (panelHide1.Visible == true)

            {

                foreach (DataGridViewColumn datcol in dgvLog.Columns)

                {

                    app.Cells[iget,&