Download file (html content) with ServiceStack
c#, servicestack
Solution
The HttpResult Constructor in ServiceStack as an overload that supports file downloads, e.g:
return new HttpResult(new FileInfo("tmp/"+file+".html"),
asAttachment: true,
contentType: "application/vnd.ms-excel");
Which will set the `ContentDisposition` HTTP headers required for file downloading.
Creating your own Http Result
For more fine-grained control of the HttpOutput you can also create your own Result class. Here is an example of downloading an Excel spreadsheet taken from the customized responses in ServiceStack question:
public class ExcelFileResult : IHasOptions, IStreamWriterAsync
{
private readonly Stream _responseStream;
public IDictionary<string, string> Options { get; private set; }
public ExcelFileResult(Stream responseStream)
{
_responseStream = responseStream;
Options = new Dictionary<string, string> {
{"Content-Type", "application/octet-stream"},
{"Content-Disposition", ""attachment; filename=\"report.xls\";"}
};
}
public async Task WriteToAsync(Stream responseStream, CancellationToken token = default)
{
if (_responseStream == null)
return;
await _responseStream.CopyToAsync(responseStream, token);
await responseStream.FlushAsync(token);
}
}
Problem
I'm using Service Stack for a simple web application. In this app i need to "export" some content to Excel.. So this is the approach I took: - I get the HTML content of a table with jQuery a get the HTML content of a table, and send to the service. - The Service write the content to a file (with some CSS) - Using the same service, but with a `GET` method, I read the file and make the download with `ContentType:"application/vnd.ms-excel"` I used this approach without Service Stack in other times, and worked well.. The `XLS` file had the right content and some colors. Now, when I get the file using `GET` method (i.e., visiting the url with the browser), the file contents are bad. ServiceStack let download with some formats: html, csv, jsv, json, xml. The html format shows up a default report page, the only format that works a little is jsv. My question is: how can I download the file like plain html file? Some code: ``` public class ExcelService : RestServiceBase<Excel> { public override object OnGet (Excel request) { string file = request.nombre; //Response.Clear(); HttpResult res = new HttpResult(); res.Headers[HttpHeaders.ContentType] = "application/vnd.ms-excel"; res.Headers[HttpHeaders.ContentDisposition] = "attachment; filename="+file+".xls"; string archivo = System.IO.File.ReadAllText("tmp/"+file+".html"); res.Response = archivo; return res; } } ``` Thanks in advance