I'm trying export out using C1 excel with a prompt to the user where to save the file.
However I have tried the following codes but it doesn't seems to work.
Response.Clear();
Response.ContentType = "application/vnd.ms-excel";
Response.AppendHeader("Content-Disposition","attachment;filename=CategoryReport.xls");
System.IO.MemoryStream ms = new System.IO.MemoryStream();
xbook.Save(ms, C1.C1Excel.FileFormat.Biff8);
ms.WriteTo(Response.OutputStream);
ms.Close();
ms.Dispose();
xbook.Dispose();
Please help =)
You can use an HTTP Handler (DownloadFile.ashx):
public class DownloadFile : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
// retrieve your xbook
System.IO.MemoryStream ms = new System.IO.MemoryStream();
xbook.Save(ms, C1.C1Excel.FileFormat.Biff8);
xbook.Dispose();
ms.Position = 0;
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
response.ContentType = "application/vnd.ms-excel";
response.AddHeader("Content-Disposition","attachment;filename=CategoryReport.xls");
Response.BufferOutput = true;
Response.OutputStream.Write(ms.ToArray(), 0, (int)ms.Length);
response.Flush();
response.End();
}
public bool IsReusable
{
get
{
return false;
}
}
}
In the export event in code behind:
Response.Redirect("YourPathToHttpHandler/DownloadFile.ashx");
Related
I am working on export functionality using PDFsharp in .Net MVC I am not getting any error in my code but not getting PDF file in response.
I have tried doing it manually writing it to specific path with the help of : System.IO.File.WriteAllBytes(path1, bytes); and it's working perfectly, but I am not getting PDF in Response with the help of
Response.BinaryWrite(bytes);
Response.OutputStream.Write(bytes, 0, bytes.Length);
Anyone have faced this type of issue or someone from community please help
Here is my code :
public bool ExportPdf(string htmlcontenttbl)
{
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=Myfile.pdf");
Response.ContentType = "application/pdf";
Response.Charset = "";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
PdfDocument document =
PdfGenerator.GeneratePdf(htmlcontenttbl.ToString(), PdfSharp.PageSize.A4,
30);
var config = new PdfGenerateConfig();
config.PageOrientation = PageOrientation.Landscape;
config.PageSize = PageSize.A4;
config.MarginBottom = 30;
config.MarginTop = 30;
byte[] bytes = null;
using (MemoryStream stream = new MemoryStream())
{
document.Save(stream, true);
bytes = stream.ToArray();
}
var path1 = Server.MapPath("~/Images/" +
DateTime.Now.TimeOfDay.Ticks + "result.pdf");
//System.IO.File.WriteAllBytes(path1, bytes);
//Response.BinaryWrite(bytes);
//Response.OutputStream.Write(bytes, 0, bytes.Length);
Response.Flush();
Response.End();
return true;
}
thank you,
I am getting the following error:
, value hexadecimal 0x02, caracter not valid.
using this code:
using (XLWorkbook wb = new XLWorkbook())
{
wb.Worksheets.Add(dt1);
Response.Clear();
Response.Buffer = true;
Response.Charset ="";
Response.ContentType = "application/vnd.openxmlformats- officedocument.spreadsheetml.sheet";
//Response.AddHeader("content-disposition", "attachment;filename=GridView.xlsx");
Response.AddHeader("content-disposition", "attachment;filename=" + filename);
using (MemoryStream MyMemoryStream = new MemoryStream())
{
wb.SaveAs(MyMemoryStream);
MyMemoryStream.WriteTo(Response.OutputStream);
Response.Flush();
Response.End();
}
}
I have tried different ways, but I still get the same error. "dt1" is filled from stored procedure.
to use ClosedXML I am currently doing the following and I call this method to open the Excel from a web page.
to call the ExportToExcel_SomeReport you would do it like this I create a public static class called Extensions
Extensions.ExportToXcel_SomeReport(dt1, fileName, this.Page);//Call the method on your button click
//this will be in the static public class you create
internal static void ExportToXcel_SomeReport(DataTable dt, string fileName, Page page)
{
var recCount = dt.Rows.Count;
fileName = string.Format(fileName, DateTime.Now.ToString("MMddyyyy_hhmmss"));
var xlsx = new XLWorkbook();
var ws = xlsx.Worksheets.Add("Some Custom Report");
ws.Style.Font.Bold = true;
ws.Cell("C5").Value = "Some Custom Header Report";
ws.Cell("C5").Style.Font.FontColor = XLColor.Black;
ws.Cell("C5").Style.Font.SetFontSize(16.0);
ws.Cell("E5").Value = DateTime.Now.ToString("MM/dd/yyyy HH:mm");
ws.Range("C5:E5").Style.Font.SetFontSize(16.0);
ws.Cell("A7").Value = string.Format("{0} Records", recCount);
ws.Style.Font.Bold = false;
ws.Cell(9, 1).InsertTable(dt.AsEnumerable());
ws.Row(9).InsertRowsBelow(1);
// ws.Style.Font.FontColor = XLColor.Gray;
ws.Columns("1-8").AdjustToContents();
ws.Tables.Table(0).ShowAutoFilter = true;
ws.Style.Alignment.Horizontal = XLAlignmentHorizontalValues.Center;
DynaGenExcelFile(fileName, page, xlsx);
}
private static void DynaGenExcelFile(string fileName, Page page, XLWorkbook xlsx)
{
page.Response.ClearContent();
page.Response.ClearHeaders();
page.Response.ContentType = "application/vnd.ms-excel";
page.Response.AppendHeader("Content-Disposition", string.Format("attachment;filename={0}.xls", fileName));
using (MemoryStream memoryStream = new MemoryStream())
{
xlsx.SaveAs(memoryStream);
memoryStream.WriteTo(page.Response.OutputStream);
memoryStream.Close();
}
page.Response.Flush();
page.Response.End();
}
I use the below code in mvc to download Excel file but it shows error query string too long.
public ActionResult Download(string input)
{
Response.Clear();
Response.ClearHeaders();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("Content-Disposition", "attachment; filename= download.xlsx");
Response.AddHeader("Content-Type", "application/Excel");
Response.ContentType = "application/vnd.ms-excel";
Response.WriteFile(input);
Response.End();
return Content(String.Empty);
}
This code works for me for PDF:
public FileStreamResult DownnloadPDF(int id)
{Document document = new Document();
MemoryStream stream = new MemoryStream();
PdfWriter pdfWriter = PdfWriter.GetInstance(document, stream);
pdfWriter.CloseStream = false;
document.Open();
formatPDF(document, model);
document.Close();
stream.Flush(); //Always catches me out
stream.Position = 0; //Not sure if this is required
return File(stream, "application/pdf", "title" + ".pdf");
}
I really think that your ActionResult will not work.
I am saving a pdf file in the database by the following code
string filename = Path.GetFileName(FileUpload1.PostedFile.FileName);
string filetype = Path.GetExtension(FileUpload1.PostedFile.FileName);
int filesize = FileUpload1.PostedFile.ContentLength;
Stream fs = FileUpload1.PostedFile.InputStream;
BinaryReader br = new BinaryReader(fs);
byte[] content = br.ReadBytes((Int32)fs.Length);
Objects.Insert_FilesToDatabase(filename, filetype, content,filesize);
and then, Iam trying to save the file from the database by clicking the link thru the following code.
void lnkDownload_Click(object sender, EventArgs e)
{
string filetype = Objects.GetFileType(Convert.ToInt32(txtslno.Text.Trim()));
string filename=Objects.GetFileName(Convert.ToInt32(txtslno.Text.Trim()));
int filesize = Objects.GetFileLength(Convert.ToInt32(txtslno.Text.Trim()));
byte[] bytfile = new byte[filesize+1000];
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition",attachment;filename="+filename+".pdf");
Response.BufferOutput = true;
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(bytfile);
Response.End();
}
Thru this code, I am able to download the pdf file but I am unable to open the pdf file. The error is the file is not decoded properly. Can you help me as to where am I going wrong?
I solved this problem thru the following code..
byte[] bytfile = Objects.GetFile(Convert.ToInt32(txtslno.Text.Trim()));
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment;filename="+filename);
Response.AddHeader("Content-Length", bytfile.Length.ToString());
Response.OutputStream.Write(bytfile, 0, bytfile.Length);
Response.Flush();
Response.End();
I am just not writing the binary content to the output pdf stream in my previous code..
Thank you for your support
I want to edit and existing pdf and to send the result to the broswer
Here is my methode:
public static byte[] Generate()
{
var templatePath = HttpContext.Current.Server.MapPath("~/my_template.pdf");
// Based on:
// http://www.johnnycode.com/blog/2010/03/05/using-a-template-to-programmatically-create-pdfs-with-c-and-itextsharp/
var reader = new PdfReader(templatePath);
var outStream = new MemoryStream();
var stamper = new PdfStamper(reader, outStream);
var form = stamper.AcroFields;
var fieldKeys = form.Fields.Keys;
foreach (string fieldKey in fieldKeys)
{
if (form.GetField(fieldKey) == "MyTemplatesOriginalTextFieldA")
form.SetField(fieldKey, "1234");
if (form.GetField(fieldKey) == "MyTemplatesOriginalTextFieldB")
form.SetField(fieldKey, "5678");
}
// "Flatten" the form so it wont be editable/usable anymore
stamper.FormFlattening = true;
stamper.Close();
reader.Close();
return outStream.ToArray();
}
and
The method call
byte[] buffer = Generate();
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", buffer.Length.ToString());
Response.BinaryWrite(buffer);
Can someone help me in this case ?
Add this line
byte[] buffer = Generate();
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", buffer.Length.ToString());
Response.AppendHeader("Content-Disposition", "attachment; filename=youPDFName.pdf");
Response.BinaryWrite(buffer);
Response.End();
I have added Content-Disposition and response.end in code.
tested above code , work fine. let me know if it works you.