I'm using Crystal Reports in my Asp.Net MVC project. Home In Database Fields in Crystal Reports in my Visual Studio, I connected a C # class instead of going to the Database. Home This is the class:
public class MinhaImagem
{
public byte[] Imagem{ get; set; }
}
The goal is to get a canvas on the client side and print it. Home My View looks like this:
function GerarImagem()
{
var $conteudo = $("#canvas-container");
html2canvas($conteudo[0], {
onrendered: function (canvas) {
var base64 = canvas.toDataURL('image/jpeg');
EnviarImagem(base64)
},
logging: true
});
}
function EnviarImagem(base64) {
$.post('@Url.Action("MinhaAction", "MeuController")', { imagem: base64 })
.done(function (data) {
// Código para baixar o pdf (que ainda não sei como)
})
.fail(function () {
alert("Error");
});
}
My Controller looks like this:
public ActionResult MinhaAction(string imagem)
{
try
{
MinhaImagem img = new MinhaImagem();
string dataWithoutJpegMarker = imagem.Replace("data:image/jpeg;base64,", String.Empty);
img.Imagem = Convert.FromBase64String(dataWithoutJpegMarker);
using (reports.MeuRelatorio relatorio = new reports.MeuRelatorio ())
{
relatorio.SetDataSource(img);
PdfFormatOptions pfo = ExportOptions.CreatePdfFormatOptions();
pfo.CreateBookmarksFromGroupTree = true;
Stream stream = relatorio.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
byte[] fileBytes = new byte[stream.Length];
int byteCount = stream.Read(fileBytes, 0, (int)stream.Length);
string fileContent = Convert.ToBase64String(fileBytes);
return Json(new
{
success = false,
data = fileContent,
error = "Erro",
title = "Filtro"
}, JsonRequestBehavior.AllowGet);
}
}
catch (Exception ex)
{
return Json(new
{
success = false,
message = ex.Message,
error = "Erro",
title = "Filtro"
}, JsonRequestBehavior.AllowGet);
}
}
Note: In my file .rpt
, I added the Imagem
field to sessão 5 (Rodapé)
.
Home
I'm currently having an Exception in the following line:
relatorio.SetDataSource(img);
"The data source object is invalid."