asp.net C# webform show report without reportviewer - asp.net

Question

currently i want to generate the report without showing in reportviewer. I search for the solution online but i only can find the MVC approach. I cant convert it to normal webform behavior.
public ActionResult Report(string id)
{
LocalReport lr = new LocalReport();
string path = Path.Combine(Server.MapPath("~/Report"), "ReportStateArea.rdlc");
if (System.IO.File.Exists(path))
{
lr.ReportPath = path;
}
else
{
return View("Index");
}
List<StateArea> cm = new List<StateArea>();
using (PopulationEntities dc = new PopulationEntities())
{
cm = dc.StateAreas.ToList();
}
ReportDataSource rd = new ReportDataSource("MyDataset", cm);
lr.DataSources.Add(rd);
string reportType = id;
string mimeType;
string encoding;
string fileNameExtension;
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>" + id + "</OutputFormat>" +
" <PageWidth>8.5in</PageWidth>" +
" <PageHeight>11in</PageHeight>" +
" <MarginTop>0.5in</MarginTop>" +
" <MarginLeft>1in</MarginLeft>" +
" <MarginRight>1in</MarginRight>" +
" <MarginBottom>0.5in</MarginBottom>" +
"</DeviceInfo>";
Warning[] warnings;
string[] streams;
byte[] renderedBytes;
renderedBytes = lr.Render(
reportType,
deviceInfo,
out mimeType,
out encoding,
out fileNameExtension,
out streams,
out warnings);
return File(renderedBytes, mimeType);
}
enter code here
Here is the sample of code that can allow user to generate the report in different format such as PDF, excel, image. ( http://www.dotnetawesome.com/2013/09/microsoft-report-in-mvc-4.html ).
Anyone can help or provide me a website which have a simple tutorial of that by using the SQL select statement instead of LINQ ?

Answer 1

As far as returning the report from a WebForms page, what you have above is actually pretty close. You want to return the renderedBytes array through the Response object of your current Page context like:
protected void ReportPrint_Click(object sender, EventArgs e)
{
string id = "PDF"; // get this from another control on your page
LocalReport lr = new LocalReport();
string path = Path.Combine(Server.MapPath("~/Report"), "ReportStateArea.rdlc");
if (System.IO.File.Exists(path))
{
lr.ReportPath = path;
}
else
{
// handle error condition
}
List<StateArea> cm = new List<StateArea>();
using (PopulationEntities dc = new PopulationEntities())
{
cm = dc.StateAreas.ToList();
}
ReportDataSource rd = new ReportDataSource("MyDataset", cm);
lr.DataSources.Add(rd);
string reportType = id;
string mimeType;
string encoding;
string fileNameExtension;
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>" + id + "</OutputFormat>" +
" <PageWidth>8.5in</PageWidth>" +
" <PageHeight>11in</PageHeight>" +
" <MarginTop>0.5in</MarginTop>" +
" <MarginLeft>1in</MarginLeft>" +
" <MarginRight>1in</MarginRight>" +
" <MarginBottom>0.5in</MarginBottom>" +
"</DeviceInfo>";
Warning[] warnings;
string[] streams;
byte[] renderedBytes;
renderedBytes = lr.Render(
reportType,
deviceInfo,
out mimeType,
out encoding,
out fileNameExtension,
out streams,
out warnings);
Response.Clear(); // we're going to override the default page response
Response.ContentType = mimeType;
Response.AddHeader("content-disposition", "attachment; filename=report." + fileNameExtension);
Response.BinaryWrite(renderedBytes);
Response.End();
}
This will replace the normal page response with your report content.
As far as SQL vs Linq, the DataSource object that ReportViewer uses is the old-style System.Data.DataTable so just look for information on populating a DataTable from SQL.