Writing Barcodes

1. Start Visual Studio .NET.

2. Start with the project that you created in Reading Barcodes Tutorial

3. Drag and drop a new button in Form1. Change the following properties:

   Property	Value
   Name	writeBarcodeButton
   Text	Write barcode

4. Add the following code to writeBarcodeButton click procedure:

   C#

   VB
   Private Sub writeBarcodeButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles writeBarcodeButton.Click 
      If theImage Is Nothing Then 
         Return 
      End If 
                    
      ' Create a UPC A barcode 
      Dim data As New BarcodeData() 
      data.Symbology = BarcodeSymbology.UPCA 
      data.Value = "01234567890" 
      data.Bounds = New LogicalRectangle(10, 10, 600, 200, LogicalUnit.Pixel) 
                    
      ' Setup the options to enable error checking and show the text on the bottom of the barcode 
      Dim options As New OneDBarcodeWriteOptions() 
      options.EnableErrorCheck = True 
      options.TextPosition = OneDBarcodeTextPosition.Default 
                    
      Try 
         ' Write the barcode 
         barcodeEngineInstance.Writer.WriteBarcode(theImage, data, options) 
                    
         ' Save the image 
         Dim dir As String = System.IO.Path.GetDirectoryName(imageFileName) 
         Dim name As String = System.IO.Path.GetFileNameWithoutExtension(imageFileName) 
          Dim saveFileName as String = System.IO.Path.Combine(dir, name + "_WriteBarcode.tif") 
                    
         Using codecs As New RasterCodecs() 
            codecs.Save(theImage, saveFileName, RasterImageFormat.Tif, theImage.BitsPerPixel) 
         End Using 
                    
         MessageBox.Show(String.Format("The barcode has been written and saved to {0}", saveFileName)) 
      Catch ex As Exception 
         MessageBox.Show(ex.Message) 
      End Try 
   End Sub 
                     
        

   private void writeBarcodeButton_Click(object sender, EventArgs e) 
   { 
      if(theImage == null) 
      { 
         return; 
      } 
                    
      // Create a UPC A barcode 
      BarcodeData data = new BarcodeData(); 
      data.Symbology = BarcodeSymbology.UPCA; 
      data.Value = "01234567890"; 
      data.Bounds = new LogicalRectangle(10, 10, 600, 200, LogicalUnit.Pixel); 
                    
      // Setup the options to enable error checking and show the text on the bottom of the barcode 
      OneDBarcodeWriteOptions options = new OneDBarcodeWriteOptions(); 
      options.EnableErrorCheck = true; 
      options.TextPosition = OneDBarcodeTextPosition.Default; 
                    
      try 
      { 
         // Write the barcode 
         barcodeEngineInstance.Writer.WriteBarcode(theImage, data, options); 
                    
         // Save the image 
         string dir = System.IO.Path.GetDirectoryName(imageFileName); 
         string name = System.IO.Path.GetFileNameWithoutExtension(imageFileName); 
         string saveFileName = System.IO.Path.Combine(dir, name + "_WriteBarcode.tif"); 
                    
         using(RasterCodecs codecs = new RasterCodecs()) 
         { 
            codecs.Save(theImage, saveFileName, RasterImageFormat.Tif, theImage.BitsPerPixel); 
         } 
                    
         MessageBox.Show(string.Format("The barcode has been written and saved to {0}", saveFileName)); 
      } 
      catch(Exception ex) 
      { 
         MessageBox.Show(ex.Message); 
      } 
   } 
                     
        

5. Build, and Run the program to test it. Click "Load Image" to load the image and "Write Barcode" to write a 1D UPC A barcode to the image and save it.