Load(string) Method

Summary

Loads an array of BarcodeData from the specified XML file.

Syntax

C++/CLI

Python

public static BarcodeData[] Load( 
   string fileName 
)

public: 
static array<BarcodeData^>^ Load(  
   String^ fileName 
)

def Load(self,fileName):

Parameters

fileName
The XML file containing the data.

Return Value

An array of BarcodeData for the objects found in the file, or an empty array if the file is valid but does not contain any data.

Remarks

The load/save methods are provided as helper methods for the user. The BarcodeEngine, BarcodeReader and BarcodeWriter do not use these methods internally.

To save an array of BarcodeData to an XML file, use BarcodeData.Save(string fileName, BarcodeData[] data).

To save and load data to an XML stream, use BarcodeData.Save(Stream stream, BarcodeData[] data) and BarcodeData.Load(Stream stream).

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void BarcodeData_LoadSaveExample() 
{ 
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "Barcode1.tif"); 
   string xmlFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcodes.xml"); 
 
   // Create a Barcode engine 
   BarcodeEngine engine = new BarcodeEngine(); 
 
   // Load the image 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      using (RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1)) 
      { 
         // Read all the barcodes 
         BarcodeData[] barcodes = engine.Reader.ReadBarcodes(image, LeadRect.Empty, 0, null); 
 
         // Print out the barcodes we found 
         Console.WriteLine("{0} barcodes found", barcodes.Length); 
         for (int i = 0; i < barcodes.Length; i++) 
         { 
            BarcodeData barcode = barcodes[i]; 
            Console.WriteLine("  {0} - {1} - {2}", i + 1, barcode.Symbology, barcode.Value); 
         } 
         Console.WriteLine("-----------------"); 
 
         // Save the barcodes to an XML file 
         BarcodeData.Save(xmlFileName, barcodes); 
 
         // Now load the data back and print them out 
         barcodes = BarcodeData.Load(xmlFileName); 
         Console.WriteLine("{0} barcodes loaded", barcodes.Length); 
         for (int i = 0; i < barcodes.Length; i++) 
         { 
            BarcodeData barcode = barcodes[i]; 
            Console.WriteLine("  {0} - {1} - {2}", i + 1, barcode.Symbology, barcode.Value); 
         } 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

BarcodeData Class

BarcodeData Members

Overload List

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Help Version 22.0.2023.5.9