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Writing Barcodes
  1. Start Visual Studio .NET.
  2. Start with the project that you created in Reading Bar Codes Tutorial
  3. Drag and drop a button on Form1. Change the following properties: Property Value: Name: btnWriteBarCode Text: Write BarCode
  4. Add the following code for the btnWriteBarCode control’s click procedure:

    Visual Basic

                 Private Sub btnWriteBarCode_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnWriteBarCode.Click
                Dim barcodeData As String() = New String(0){}
                barcodeData(0) = "012345678901"
                Dim barColor As BarcodeColor = New BarcodeColor()
                Dim barData As BarcodeData = New BarcodeData()
                barData.Unit = BarcodeUnit.ScanlinesPerPixels
                barData.Location = New LeadRect(0, 0, 500, 250)
                barData.Data = BarcodeData.ConvertFromStringArray(barcodeData)
                barData.SearchType = BarcodeSearchTypeFlags.Barcode1dCode3Of9
                Dim bar1d As Barcode1d = New Barcode1d()
                bar1d.ErrorCheck = True
                bar1d.OutShowText = True
            
                Try
                  _barEngine.Write(_image, barData, barColor, BarcodeWriteFlags.None, bar1d, Nothing, Nothing, Nothing, LeadRect.Empty)
            
                  Dim fName As String = "C:\Users\Public\Documents\LEADTOOLS Images\barcode_modified.tif"
                  _codecs.Save(_image, fName, RasterImageFormat.CcittGroup4, 0)
                  MessageBox.Show(Me, String.Format("The barcode has been written and saved to {0}", fName))
                Catch ex As Exception
                  MessageBox.Show(Me, ex.Message)
                End Try
             End Sub

    C#

                 private void btnWriteBarCode_Click(object sender, EventArgs e)
             {
                string[] barcodeData = new string[1];
                barcodeData[0] = "012345678901";
                BarcodeColor barColor = new BarcodeColor();
                BarcodeData barData = new BarcodeData();
                barData.Unit = BarcodeUnit.ScanlinesPerPixels;
                barData.Location = new LeadRect(0, 0, 500, 250);
                barData.Data = BarcodeData.ConvertFromStringArray(barcodeData);
                barData.SearchType = BarcodeSearchTypeFlags.Barcode1dCode3Of9;
                Barcode1d bar1d = new Barcode1d();
                bar1d.ErrorCheck = true;
                bar1d.OutShowText = true;
             
                try
                {
                   _barEngine.Write(_image,
                                    barData,
                                    barColor,
                                    BarcodeWriteFlags.None,
                                    bar1d,
                                    null,
                                    null,
                                    null,
                                    LeadRect.Empty);
            
                   string fName = @"C:\Users\Public\Documents\LEADTOOLS Images\barcode_modified.tif";
                   _codecs.Save(_image, fName, RasterImageFormat.CcittGroup4, 0);
                   MessageBox.Show(this, String.Format("The barcode has been written and saved to {0}", fName));
                }
                catch (Exception ex)
                {
                   MessageBox.Show(this, 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 barcode to the image and save it