public IActionResult Download(string downloadInput)
{
FileManagerFilterContent args = JsonConvert.DeserializeObject <FileManagerFilterContent>(downloadInput);
FileManagerDirectoryContent[] items = args.Data;
string[] names = args.Names;
for (var i = 0; i < items.Length; i++)
{
names[i] = ((items[i].FilterPath + items[i].Name).Substring(1));
}
return(operation.Download("/", names));
}
public object FileOperations([FromBody] FileManagerFilterContent args)
{
switch (args.Action)
{
// Add your custom action here
case "read":
// Path - Current path; ShowHiddenItems - Boolean value to show/hide hidden items
return(this.operation.ToCamelCase(this.operation.GetFiles(args.Path, args.ShowHiddenItems)));
case "details":
// Path - Current path where details of file/folder is requested; Name - Names of the requested folders
return(this.operation.ToCamelCase(this.operation.Details(args.Path, args.Names)));
case "create":
FileManagerResponse createresponse = new FileManagerResponse();
createresponse.Error = new ErrorDetails()
{
Code = "401", Message = "Restricted to perform this action"
};
return(this.operation.ToCamelCase(createresponse));
case "search":
// Path - Current path where the search is performed; SearchString - String typed in the searchbox; CaseSensitive - Boolean value which specifies whether the search must be casesensitive
return(this.operation.ToCamelCase(this.operation.Search(args.Path, args.SearchString, args.ShowHiddenItems, args.CaseSensitive)));
case "delete":
case "copy":
case "move":
case "rename":
FileManagerResponse renameresponse = new FileManagerResponse();
renameresponse.Error = new ErrorDetails()
{
Code = "401", Message = "Restricted to perform this action"
};
return(this.operation.ToCamelCase(renameresponse));
}
return(null);
}
public IActionResult GetImage(FileManagerFilterContent args)
{
return(this.operation.GetImage(args.Path, args.Id, false, null, null));
}
public IActionResult GetPreviewImage(FileManagerFilterContent args)
{
string baseFolder = this.basePath + "\\wwwroot\\SharedFiles";
try
{
String fullPath = baseFolder + args.Path;
string extension = Path.GetExtension(fullPath);
Stream imageStream = null;
if (extension == Constants.Pdf)
{
FileStream fileStream = new FileStream(fullPath, FileMode.Open, FileAccess.Read);
PdfRenderer pdfExportImage = new PdfRenderer();
//Loads the PDF document
pdfExportImage.Load(fileStream);
//Exports the PDF document pages into images
Bitmap[] bitmapimage = pdfExportImage.ExportAsImage(0, 0);
imageStream = new MemoryStream();
bitmapimage[0].Save(imageStream, System.Drawing.Imaging.ImageFormat.Png);
imageStream.Position = 0;
pdfExportImage.Dispose();
fileStream.Close();
}
else if (extension == Constants.Docx || extension == Constants.Rtf || extension == Constants.Doc)
{
FileStream fileStream = new FileStream(fullPath, FileMode.Open, FileAccess.Read);
//Loads file stream into Word document
WordDocument document = new WordDocument(fileStream, Syncfusion.DocIO.FormatType.Automatic);
fileStream.Dispose();
//Instantiation of DocIORenderer for Word to PDF conversion
DocIORenderer render = new DocIORenderer();
//Converts Word document into PDF document
PdfDocument pdfDocument = render.ConvertToPDF(document);
//Releases all resources used by the Word document and DocIO Renderer objects
render.Dispose();
document.Dispose();
//Saves the PDF file
MemoryStream outputStream = new MemoryStream();
pdfDocument.Save(outputStream);
outputStream.Position = 0;
//Closes the instance of PDF document object
pdfDocument.Close();
PdfRenderer pdfExportImage = new PdfRenderer();
//Loads the PDF document
pdfExportImage.Load(outputStream);
//Exports the PDF document pages into images
Bitmap[] bitmapimage = pdfExportImage.ExportAsImage(0, 0);
imageStream = new MemoryStream();
bitmapimage[0].Save(imageStream, System.Drawing.Imaging.ImageFormat.Png);
imageStream.Position = 0;
fileStream.Close();
}
else if (extension == Constants.Pptx)
{
IPresentation presentation = Presentation.Open(fullPath);
//Initialize PresentationRenderer for image conversion
presentation.PresentationRenderer = new PresentationRenderer();
//Convert the first slide to image
imageStream = presentation.Slides[0].ConvertToImage(ExportImageFormat.Png);
presentation.Dispose();
}
FileStreamResult fileStreamResult = new FileStreamResult(imageStream, "APPLICATION/octet-stream");
return(fileStreamResult);
}
catch
{
return(null);
}
}
