How to Generate Barcode in Crystal Report using C#

Prerequisites for Crystal Reports C# Barcoding

BarcodeLib.Barcode.CrystalReports.dll
Microsoft .NET Framework 2.0 (or later)
Crystal Report for Visual Studio .NET 2010

Create Barcode Image in Crystal Report for ASP.NET Web Application in C#

Create a new ASP.NET website.

Create a new web site project using "ASP.NET Crystal Reports Web Site" as template, named "BarcodeforCrystalReportsWebSite".

Add a Crystal Report item to the project.

Add a new item (Crystal Report), named "CustomerReport.rpt" to the project. view image
Select Expert as "Mail Label". Click "OK" button. view image
In "Mailing Labels Report Creation Wizard", click "Create New Connection", and expand "ADO.NET". view image
In "ADO.NET" form, select "CustomerDataSet.xsd" file in your downloaded package, and click "Finish" button. view image
In "Mailing Labels Report Creation Wizard", add table "Customer" under "ADO.NET", to selected table. And click "Next" button. view image
Add all three fields "ID", "CustomerId", "CustomerName", to "Fields to Display:". Click "Next". view image
Select default label "Return Address (Avery 5267)", and click "Finish" button.
Now you can view the report template, and find that field "Barcode" not in the report template. view image
Re-arrange the report template. view image
Drag field "Barcode" to the report template. And Right click "Barcode" object, select "Format Object" menu. view image
In "Format Editor" form, check "Can Grow" property. view image

Add Crystal Report Viewer to the Default.aspx.

Add a reference to BarcodeLib.Barcode.CrystalReports.dll.
Add the following code to the Default.aspx.cs file.

     using System.Data.OleDb;
     using System.Drawing.Imaging;
     using BarcodeLib.Barcode.CrystalReports;
     using BarcodeLib.Barcode;


     protected void Page_Load(object sender, EventArgs e)
     {
     //create the database connection. Please change to correct data file (BarcodeDemoData.mdb) path.
     OleDbConnection aConnection = new OleDbConnection(
        "Provider=Microsoft.Jet.OLEDB.4.0;
        Data Source=C:/BarcodeLib_NETBarcode_Trial/ReportingData/BarcodeDemoData.mdb");
     aConnection.Open();
	
     OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT * FROM Customer", aConnection);
     DataSet ds = new DataSet();
     dataAdapter.Fill(ds);
	
     //Add the Barcode column to the DataSet
     ds.Tables[0].Columns.Add(new DataColumn("Barcode", typeof(byte[])));
	
     //Create an instance of Linear Barcode
     //Use DataMatrixCrystal for Data Matrix
     //Use PDF417Crystal for PDF417
     //Use QRCodeCrystal for QR Code
     LinearCrystal barcode = new LinearCrystal();
     //Barcode settings
     barcode.Type = BarcodeType.CODE128;
     barcode.BarHeight = 50; //50 pixel
     barcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;
	
     foreach (DataRow dr in ds.Tables[0].Rows)
     {
        barcode.Data = (int)dr["CustomerId"] + "";
        byte[] imageData = barcode.drawBarcodeAsBytes();
        dr["Barcode"] = imageData;
     }
	
     CrystalReportSource1.ReportDocument.Load(Server.MapPath("CustomerReport.rpt"));
     CrystalReportSource1.ReportDocument.SetDataSource(ds.Tables[0]);
     CrystalReportSource1.DataBind();

     }

4. Run the project.

Create Barcode Image in Crystal Report for WinForms using C#

Create a new Windows Application Project.

Create a new project using "Crystal Reports Application" as template, named "BarcodeforCrystalReports".

Add a Crystal Report item to the project.
Add Crystal Report Viewer to the window form.

Resize "Form1", and add "CrystalReportViewer" to the form, with the default setting unchanged. view image
Add a reference to BarcodeLib.Barcode.CrystalReports.dll.
Add the following code to the Form1.cs file.

     using System.Data.OleDb;
     using System.Drawing.Imaging;
     using BarcodeLib.Barcode.CrystalReports;
     using BarcodeLib.Barcode;


     private void Form1_Load(object sender, EventArgs e)
     {
     //create the database connection. Please change to correct data file (BarcodeDemoData.mdb) path.
     OleDbConnection aConnection = new OleDbConnection(
        "Provider=Microsoft.Jet.OLEDB.4.0;
        Data Source=C:/BarcodeLib_NETBarcode_Trial/ReportingData/BarcodeDemoData.mdb");aConnection.Open();

     OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT * FROM Customer", aConnection);
     DataSet ds = new DataSet();
     dataAdapter.Fill(ds);

     //Add the Barcode column to the DataSet
     ds.Tables[0].Columns.Add(new DataColumn("Barcode", typeof(byte[])));

     //Create an instance of Linear Barcode
     //Use DataMatrixCrystal for Data Matrix
     //Use PDF417Crystal for PDF417
     //Use QRCodeCrystal for QR Code
     LinearCrystal barcode = new LinearCrystal();
     //Barcode settings
     barcode.Type = BarcodeType.CODE128;
     barcode.BarHeight = 50; //50 pixel
     barcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;

     foreach (DataRow dr in ds.Tables[0].Rows)
     {
        barcode.Data = (int)dr["CustomerId"] + "";
        byte[] imageData = barcode.drawBarcodeAsBytes();
        dr["Barcode"] = imageData;
     }

     CustomerReport rpt = new CustomerReport();
     rpt.SetDataSource(ds);

     this.crystalReportViewer1.ReportSource = rpt;

     //close the connection Its important.
     aConnection.Close();

     }

4. Run the project.

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Barcode for Java, Barcode for .NET, Barcode for .NET WinForms, Barcode for .NET Crystal Reports, Barcode for .NET Reporting Services, Barcode for .NET RDLC Reports, Barcode Reader for ASP.NET, Windows Barcode Generator Software.