public async void ExportAsPDF(string filename, Stream chartStream, SfChart chart)
{
NativeChart.SfChart nativeChart = SfChartRenderer.GetNativeObject(typeof(SfChart), chart) as NativeChart.SfChart;
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
StorageFile file = await localFolder.CreateFileAsync("filename", CreationCollisionOption.ReplaceExisting);
if (file != null)
{
IRandomAccessStream stream = await file.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
await Save_UWP(nativeChart, stream);
}
using (var fileStream = await file.OpenAsync(FileAccessMode.Read))
{
var reader = new DataReader(fileStream.GetInputStreamAt(0));
var bytes = new byte[fileStream.Size];
await reader.LoadAsync((uint)fileStream.Size);
reader.ReadBytes(bytes);
MemoryStream imageStream = new MemoryStream(bytes);
if (file != null)
{
var document = new PdfDocument();
var page = document.Pages.Add();
var graphics = page.Graphics;
PdfBitmap image = new PdfBitmap(imageStream);
graphics.DrawImage(image, 0, 0, page.GetClientSize().Width, page.GetClientSize().Height);
chartStream = new MemoryStream();
document.Save(chartStream);
document.Close(true);
Save(chartStream, filename, ".pdf");
}
}
}
public void ExportAsPDF(string filename, Stream chartStream, SfChart chart)
{
try
{
//Create a new PDF document.
var document = new PdfDocument();
var page = document.Pages.Add();
var graphics = page.Graphics;
graphics.DrawImage(PdfImage.FromStream(chartStream), 0, 0, page.GetClientSize().Width, page.GetClientSize().Height);
MemoryStream stream = new MemoryStream();
document.Save(stream);
document.Close(true);
SavePDF(filename, stream);
}
finally
{
chartStream.Flush();
chartStream.Close();
var nativeChart = SfChartRenderer.GetNativeObject(typeof(SfChart), chart);
((Com.Syncfusion.Charts.SfChart)nativeChart).DrawingCacheEnabled = false;
}
}