Spire.BarCode for .NET is a professional barcode component specially designed for .NET developers (C#, VB.NET, ASP.NET) to generate, read 1D & 2D barcodes. Developers and programmers can use Spire.BarCode to add Enterprise-Level barcode formats to their .net applications (ASP.NET, WinForms) quickly and easily. Below is how to use Spire.BarCode for .NET.

Step 1: Create Project

Create a C#/VB.NET Windows Forms Application project in visual studio, name it Barcode.

Step 2: Add Spire.Barcode.dll

• In Toolbox, right-click the blank area, select "Add Tab", name it "Spire.Barcode Controls".
• Right-click "Spire.Barcode Controls", select "Choose Items", select ".NET Framework Components", Click "Browse", find the Spire.Barcode.dll and double-click it.
• Then you will see "BarCodeControl" shown in "Spire.Barcode Controls" in Toolbox.

Step 3: Add Controls

Here is what the window looks like:

Step 4: Generate Barcode Image

btnCreate_Click is the method to generate barcode image. There are two import classes-BarCodeControl and BarCodeGenerator in this method. BarCodeControl stores information about barcode.

Here are some introductions about some of its properties:

BarCodeGenerator is the class to generate barcode image. Its constructor takes one parameter – a BarCodeControl instance. It has a method called GenerateImage() whose return value is Image object to generate image.

//Generate the barcode based on the this.barCodeControl1
BarCodeGenerator generator = new BarCodeGenerator(this.barCodeControl1);
Image barcode = generator.GenerateImage();
            
//save the barcode as an image
barcode.Save("barcode.png");

'Generate the barcode based on the barCodeControl1
Dim generator As New BarCodeGenerator(barCodeControl1)
Dim barcode As Image = generator.GenerateImage()

'save the barcode as an image
barcode.Save("barcode.png")

Step 5: Scan Barcode Image

BarcodeScanner is the class to scan barcode image. Call its method Scan with the Bitmap object containing the barcode image, it returns a string [] value where the scanning result is stored.

And btnScan_Click uses the class BarcodeScanner to scan barcode image in its code.

Here is the code in btnScan_Click.

private void btnScan_Click(object sender, EventArgs e)
{
//scan the barcode
string[] datas = Spire.Barcode.BarcodeScanner.Scan("barcode.png");

//show the scan result
this.TextB_ScanResult.Text = datas[0];
}

Private Sub btnScan_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnScan.Click
'scan the barcode
Dim datas() As String = Spire.Barcode.BarcodeScanner.Scan("barcode.png")

'show the scan result
Me.TextB_ScanResult.Text = datas(0)
End Sub

Step 6. Running

Run the project. You will see a window opened.

Put in some settings and click the button "Create". You will see the generated barcode image.

Click the button "Scan". You will see the barcode text shown in TextB_ScanResult.