Export to CSV using MVC, C# and jQuery

Question

I am trying to export a list to a CSV file. I got it all working up to the point I want to write to file to the response stream. This doesn\'t do anything.

Here is m

Answer 1

Respect to Biff, here's a few tweaks that let me use the method to bounce CSV from jQuery/Post against the server and come back as a CSV prompt to the user.

    [Themed(false)]
    public FileContentResult DownloadCSV()
    {

        var csvStringData = new StreamReader(Request.InputStream).ReadToEnd();

        csvStringData = Uri.UnescapeDataString(csvStringData.Replace("mydata=", ""));

        return File(new System.Text.UTF8Encoding().GetBytes(csvStringData), "text/csv", "report.csv");
    }

You'll need the unescape line if you are hitting this from a form with code like the following,

    var input = $("<input>").attr("type", "hidden").attr("name", "mydata").val(data);
    $('#downloadForm').append($(input));
    $("#downloadForm").submit();

Answer 2

Simple excel file create in mvc 4

public ActionResult results() { return File(new System.Text.UTF8Encoding().GetBytes("string data"), "application/csv", "filename.csv"); }

Answer 3

I Think you have forgot to use

  Response.Flush();

under

  Response.Write(sw);

please check

Answer 4

Even if you have resolved your issue, here is another one try to export csv using mvc.

return new FileStreamResult(fileStream, "text/csv") { FileDownloadName = fileDownloadName };

Answer 5

With MVC you can simply return a file like this:

public ActionResult ExportData()
{
    System.IO.FileInfo exportFile = //create your ExportFile
    return File(exportFile.FullName, "text/csv", string.Format("Export-{0}.csv", DateTime.Now.ToString("yyyyMMdd-HHmmss")));
}

Answer 6

From a button in view call .click(call some java script). From there call controller method by window.location.href = 'Controller/Method';

In controller either do the database call and get the datatable or call some method get the data from database table to a datatable and then do following,

using (DataTable dt = new DataTable())
                        {
                            sda.Fill(dt);
                            //Build the CSV file data as a Comma separated string.
                            string csv = string.Empty;
                            foreach (DataColumn column in dt.Columns)
                            {
                                //Add the Header row for CSV file.
                                csv += column.ColumnName + ',';
                            }
                            //Add new line.
                            csv += "\r\n";
                            foreach (DataRow row in dt.Rows)
                            {
                                foreach (DataColumn column in dt.Columns)
                                {
                                    //Add the Data rows.
                                    csv += row[column.ColumnName].ToString().Replace(",", ";") + ',';
                                }
                                //Add new line.
                                csv += "\r\n";
                             }
                             //Download the CSV file.
                             Response.Clear();
                             Response.Buffer = true;
                             Response.AddHeader("content-disposition", "attachment;filename=SqlExport"+DateTime.Now+".csv");
                             Response.Charset = "";
                             //Response.ContentType = "application/text";
                             Response.ContentType = "application/x-msexcel";
                             Response.Output.Write(csv);
                             Response.Flush();
                             Response.End();
                           }