/// <summary>
/// ExportToExcel is a method used for Export To Excel with template file.
///
/// </summary>
/// <param name="templateFile">The fully qualified name of the new file, or the relative file name. Do not end the path with the directory separator character.</param>
/// <param name="dt">Datatable for export.</param>
/// <param name="printHeaders">Datatable's header used or not, when Export it. </param>
/// <param name="exportFileName">provide fileName only not path. </param>
/// <param name="Response">System.Web.HttpResponse. </param>
/// <param name="sheetNames">arg[0] means provide sheet name where you want to load data. \n (Optional Parameter) arg[1] means provide sheet name where you want to edit. (Optional Parameter) arg[2] means if your intention is to Edit sheet so provide searchText.</param>
///
public static string ExportToExcel(FileInfo templateFile, DataTable dt, bool printHeaders, string exportFileName, System.Web.HttpResponse Response, params String[] sheetNames)
{
try
{
using (ExcelPackage p = new ExcelPackage(templateFile, false))
{
EPPlus.AddSheetWithTemplate(p, dt, sheetNames[0], printHeaders);
String[] clientName = exportFileName.Split(new char[] { '_' }, 2);
if (sheetNames.Count() > 2)
{
ExcelPackagePlusLibrary.EPPlus.EditSheet(p, sheetNames[1], sheetNames[2], clientName[0] ?? exportFileName);
}
Byte[] fileBytes = p.GetAsByteArray(); //Read the Excel file in a byte array
//Clear the response
Response.ClearHeaders();
Response.ClearContent();
Response.Clear();
//Response.Cookies.Clear();
//Add the header & other information
//Response.Cache.SetCacheability(System.Web.HttpCacheability.Private);
//Response.CacheControl = "private";
//Response.Charset = System.Text.UTF8Encoding.UTF8.WebName;
//Response.ContentEncoding = System.Text.UTF8Encoding.UTF8;
//Response.AppendHeader("Content-Length", fileBytes.Length.ToString());
//Response.AppendHeader("Pragma", "cache");
//Response.AppendHeader("Expires", "60");
Response.AddHeader("Content-Disposition",
"attachment; " +
"filename=" + exportFileName + "; " +
"size=" + fileBytes.Length.ToString() + "; " +
"creation-date=" + DateTime.Now.ToString("R").Replace(",", "") + "; " +
"modification-date=" + DateTime.Now.ToString("R").Replace(",", "") + "; " +
"read-date=" + DateTime.Now.ToString("R").Replace(",", ""));
//Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.ContentType = "application/x-msexcel";
//Write it back to the client
Response.BinaryWrite(fileBytes);
Response.Flush();
Response.Close();
/* Download to Client Side. */
//DirectoryInfo dir = new DirectoryInfo(Server.MapPath("~/Testing/Downloaded/" + DateTime.Now.ToString("MM-dd-yyyy")));
//if (!dir.Exists)
//{
// dir.Create();
//}
//File.WriteAllBytes(dir.FullName + "\\" + fileName, fileBytes);
return String.Empty;
}
}
catch (Exception ex)
{
_ErrorMessage = ex.Message.ToString();
return _ErrorMessage;
}
}