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LoadZonesAsync Method (IOcrDocument)


Load zones from a multi-page Windows Runtime StorageFile object.


WinRT C#
IAsyncAction LoadZonesAsync(  
   IStorageFile file 
Function LoadZonesAsync( _ 
   ByVal file As IStorageFile _ 
) As IAsyncAction 
IAsyncAction LoadZonesAsync(  
   IStorageFile file 
function Leadtools.Forms.Ocr.IOcrDocument.LoadZonesAsync(  
IAsyncAction^ LoadZonesAsync(  
   IStorageFile^ file 


The Windows Runtime storage containing the zones to load.


To save and load the zones of OCR pages, you can use one of these methods:

Note on loading zones from a multi-page zone file: If the file does not contain zones data with the correct page number, the engine will not load any zones for this page. After the method returns, any OCR page that did not have zones data will contain zero zones. (the IOcrPage.Zones property contains 0 items). You can then use IOcrPage.AutoZone if required to re-zone this page.

Use this method to load the zones previously saved into a multi-page zones disk file with the IOcrDocument.SaveZones(filename) method.

The zones of this page will first be cleared prior to loading the new items.

After this method finishes, you can access the loaded zones in the IOcrPage.Zones property.

Saving zones to an external file or a stream could be useful when you are processing forms. For example, you can load one of the forms and automatically find the zones inside it using AutoZone, if the automatic zone detection was not 100 percent satisfactory, you can update the zones in the IOcrPage.Zones collection manually and then save the result with IOcrDocument.SaveZonesAsync(file). Once the zones are saved. You can now process all similar forms in the following manner:


Target Platforms

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