UploadAnnotations Method (original) (raw)
Summary
Uploads a chunk of external annotations data to the specified document.
Syntax
Parameters
cache
The cache used when uploading this document. This value cannot be null.
uri
The temporary document URI. This must be the same value returned from BeginUpload and cannot be null.
data
Current chunk of data. The factory will upload length number of bytes from this chunk starting at offset.
offset
Offset into data where to data begins.
length
Number of bytes to upload.
Example
using Leadtools;
using Leadtools.Caching;
using Leadtools.Document;
public void DocumentFactoryBeginUploadExample()
{
var cache = GetCache();
// Upload the document in 32K chunks
const int bufferSize = 1024 * 32;
var buffer = new byte[bufferSize];
var fileName = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf");
Uri uploadUri = null;
using (var reader = File.OpenRead(fileName))
{
// Start uploading
var uploadOptions = new UploadDocumentOptions();
uploadOptions.Cache = cache;
// Optional: set the mime type of the document we are uploading.
// If this value is not provided or is wrong then it will be overridden by the factory when LoadFromUri is called.
uploadOptions.MimeType = "application/pdf";
// Optional: set the name of the document, the same name as the file.
// This value is only important as a hint when the document file data does not contain a valid signature, such as TXT or XML files
uploadOptions.Name = "Leadtools.pdf";
uploadOptions.CachePolicy = new CacheItemPolicy();
uploadOptions.DocumentId = null;
uploadOptions.PageCount = 0;
uploadUri = DocumentFactory.BeginUpload(uploadOptions);
int bytes;
do
{
bytes = reader.Read(buffer, 0, bufferSize);
if (bytes > 0)
{
// Upload a chunk
DocumentFactory.UploadDocument(cache, uploadUri, buffer, 0, bytes);
// Upload annotations
DocumentFactory.UploadAnnotations(cache, uploadUri, buffer, 0, bytes);
}
}
while (bytes > 0);
}
// We are done, this method is optional, we can call LoadFromUri right now
DocumentFactory.EndUpload(cache, uploadUri);
DocumentFactory.AbortUploadDocument(uploadUri);
// Now load the document
var options = new LoadDocumentOptions();
options.Cache = cache;
using (var document = DocumentFactory.LoadFromUri(uploadUri, options))
{
PrintOutDocumentInfo(document);
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}