How to Download in in file

Question

Download for pdf,documents,and video and audio use c# use in my project use download any file ...

Answer 1

try this code for download pdf file.

 

#region Export PDF
       public async Task<FileContentResult> ExportPDF()
       {
           //student list
           //var dataList = GetStudentList();
           var users = _context.TEntity.Select(u => new Employee
           {
               Id = u.Id,
               Name = u.Name,
               Address = u.Address,
               Birthdate = u.Birthdate,
               Gender = u.Gender,
               Email = u.Email,
               Designation = u.Designation,
               Salary = u.Salary


           }).ToList();

           if (users == null) return null;
           //column Header name
           var columnsHeader = new List<string>{
               "S/N",
               "Name",
               "Address",
               "Birthdate",
               "Gender",
               "Email",
               "Designation",
               "Salary"
           };
           var filecontent = ExportPDF(users, columnsHeader, "TEntity");
           return File(filecontent, "application/pdf", "Employee.pdf"); ;
       }
       #endregion
       #region Helpers of Export PDF
       private byte[] ExportPDF(List<Employee> dataList, List<string> columnsHeader, string heading)
       {

           var document = new Document();
           var outputMS = new MemoryStream();
           var writer = PdfWriter.GetInstance(document, outputMS);
           document.Open();
           var font5 = FontFactory.GetFont(FontFactory.HELVETICA, 11);

           document.Add(new Phrase(Environment.NewLine));

           //var count = typeof(UserListVM).GetProperties().Count();
           var count = columnsHeader.Count;
           var table = new PdfPTable(count);
           float[] widths = new float[] { 2f, 5f, 5f, 5f, 3f, 6f, 4f, 3f };

           table.SetWidths(widths);

           table.WidthPercentage = 100;
           var cell = new PdfPCell(new Phrase(heading));
           cell.Colspan = count;

           for (int i = 0; i < count; i++)
           {
               var headerCell = new PdfPCell(new Phrase(columnsHeader[i], font5));
               headerCell.BackgroundColor = BaseColor.Gray;
               table.AddCell(headerCell);
           }

           var sn = 1;
           foreach (var item in dataList)
           {
               table.AddCell(new Phrase(sn.ToString(), font5));
               table.AddCell(new Phrase(item.Name, font5));
               table.AddCell(new Phrase(item.Address, font5));
               table.AddCell(new Phrase(item.Birthdate.ToString(), font5));
               table.AddCell(new Phrase(item.Gender, font5));
               table.AddCell(new Phrase(item.Email, font5));
               table.AddCell(new Phrase(item.Designation, font5));
               table.AddCell(new Phrase(item.Salary.ToString(), font5));

               sn++;
           }

           document.Add(table);
           document.Close();
           var result = outputMS.ToArray();

           return result;
       }

       #endregion

 step 2: Now in list view

 

@model IEnumerable<ProjectName.Models.Employee>

@{
    ViewData["Title"] = "Index";
}

<h2>Index</h2>
<script src="~/js/pdf.js"></script>
<p>
    <a class="btn btn-default" asp-action="Create">Create New</a>

    <a class="btn btn-default" style="float:right;" asp-action="ExportPDF">Create PDF</a>

</p>
<table class="table">
    <thead>
        <tr>
                <th>
                    @Html.DisplayNameFor(model => model.Id)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Name)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Address)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Birthdate)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Gender)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Email)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Designation)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Salary)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Resume)
                </th>
                <th>
                    @Html.DisplayNameFor(model => model.Photo)
                </th>
            <th></th>
        </tr>
    </thead>
    <tbody>
@foreach (var item in Model) {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.Id)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Name)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Address)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Birthdate)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Gender)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Email)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Designation)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Salary)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Resume)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Photo)
            </td>
            <td>
                @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
                @Html.ActionLink("Details", "Details", new { id = item.Id }) |
                @Html.ActionLink("Delete", "Delete", new { id = item.Id })
            </td>
        </tr>
}
    </tbody>
</table>

 thanx

Answer 2

Hi,

Try this code :

protectedvoidlnkfilepath_Click(objectsender,EventArgse)//urlinkbutton
{
stringfilename=lnkfilepath.Text;
stringFilpath=Server.MapPath(“~/Attachments/”+filename);
DownLoad(Filpath);

}
publicvoidDownLoad(stringFName)
{
stringpath=FName;
System.IO.FileInfofile=newSystem.IO.FileInfo(path);
if(file.Exists)
{
Response.Clear();
Response.AddHeader(“Content-Disposition”,“attachment;filename=”+file.Name);
Response.AddHeader(“Content-Length”,file.Length.ToString());
Response.ContentType=“application/octet-stream”;//downloadalltypesoffiles..
Response.WriteFile(file.FullName);
Response.End();

}
else
{
Response.Write(“Thisfiledoesnotexist.”);
}

}

Reference :

https://rajeeshmenoth.wordpress.com/2014/06/25/how-to-download-files-using-asp-net-c/

Answer 3

try this

http://www.csharp-examples.net/download-files/

Answer 4

Hello barathi

 

please refer this code for Download Video.

//Create a stream for the file
    Stream stream = null;

    //This controls how many bytes to read at a time and send to the client
    int bytesToRead = 10000;

    // Buffer to read bytes in chunk size specified above
    byte[] buffer = new Byte[bytesToRead];

    // The number of bytes read
    try
    {
      //Create a WebRequest to get the file
      HttpWebRequest fileReq = (HttpWebRequest) HttpWebRequest.Create(url);

      //Create a response for this request
      HttpWebResponse fileResp = (HttpWebResponse) fileReq.GetResponse();

      if (fileReq.ContentLength > 0)
        fileResp.ContentLength = fileReq.ContentLength;

        //Get the Stream returned from the response
        stream = fileResp.GetResponseStream();

        // prepare the response to the client. resp is the client Response
        var resp = HttpContext.Current.Response;

        //Indicate the type of data being sent
        resp.ContentType = "application/octet-stream";

        //Name the file
        resp.AddHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
        resp.AddHeader("Content-Length", fileResp.ContentLength.ToString());

        int length;
        do
        {
            // Verify that the client is connected.
            if (resp.IsClientConnected)
            {
                // Read data into the buffer.
                length = stream.Read(buffer, 0, bytesToRead);

                // and write it out to the response's output stream
                resp.OutputStream.Write(buffer, 0, length);

                // Flush the data
                resp.Flush();

                //Clear the buffer
                buffer = new Byte[bytesToRead];
            }
            else
            {
                // cancel the download if client has disconnected
                length = -1;
            }
        } while (length > 0); //Repeat until no data is read
    }
    finally
    {
        if (stream != null)
        {
            //Close the input stream
            stream.Close();
        }
    }

 

Answer 5

hi,

you can download file giving url

try below code

 code will dowload file from given url and in red color you have to mention filename with extention

using (var client = new WebClient())
{
    client.DownloadFile("http://example.com/file/song/a.pdf", "a.pdf");//download pdf
}

 

 

Answer 6

error in this line

 

Response.Clear();

Answer 7

i want to download any file from folder dotnet windows appilication using c#

[e-mail] send me plz

Answer 8

http://www.aspdotnet-suresh.com/2012/02/saveupload-files-in-folder-and-download.html

Answer 9

Hi,

 

You can write code like this :

 

System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
response.ContentType = "APPLICATION/OCTET-STREAM";
response.AddHeader("Content-Disposition", "attachment; filename=" + yourfileName + ";");
response.TransmitFile(Server.MapPath("FileName"));
response.Flush();
response.End();

 

Check this links for how to implement file download.

 

http://www.aspdotnet-suresh.com/2012/02/saveupload-files-in-folder-and-download.html

http://www.codeproject.com/Tips/185886/File-Upload-and-Download-in-ASP-NET

http://stackoverflow.com/questions/18477398/asp-net-file-download-from-server

Answer 10

Use the following Code

protected void Download_Click(object sender, EventArgs e)
{
try
{
string strURL = txtFileName.Text;
WebClient req = new WebClient();
HttpResponse response = HttpContext.Current.Response;
response.Clear();
response.ClearContent();
response.ClearHeaders();
response.Buffer = true;
response.AddHeader("Content-Disposition", "attachment;filename=\"" + Server.MapPath(strURL) + "\"");
byte[] data = req.DownloadData(Server.MapPath(strURL));
response.BinaryWrite(data);
response.End();
}
catch (Exception ex)
{
}
}