Jak generować kod kreskowy Code 128 w C#

Instalacja biblioteki IronBarcode

To install the IronBarcode NuGet package using the Package Manager Console in Visual Studio, you can follow these steps:

1. Otwórz program Visual Studio.
2. In the top menu, go to "View" > "Other Windows" > "Package Manager Console" to open the Package Manager Console.

3. In the Package Manager Console, you can use the Install-Package command to install the IronBarcode package. Wpisz następujące polecenie i naciśnij Enter:

   Install-Package BarCode

   Install-Package BarCode

   SHELL
4. This command will download and install the latest version of the IronBarcode NuGet package and its dependencies into your project.

Add the following namespace to use the barcode library in your project.

using IronBarCode;

using IronBarCode;

Imports IronBarCode

Generate Code 128 Barcode Image

The following code will generate a Code 128 barcode.

// Create a barcode from the input string and specify encoding type as Code 128
var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

// Save the barcode image as a JPEG file
myBarcode.SaveAsJpeg("myBarcode.Jpeg");

// Create a barcode from the input string and specify encoding type as Code 128
var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

// Save the barcode image as a JPEG file
myBarcode.SaveAsJpeg("myBarcode.Jpeg");

' Create a barcode from the input string and specify encoding type as Code 128
Dim myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128)

' Save the barcode image as a JPEG file
myBarcode.SaveAsJpeg("myBarcode.Jpeg")

This code creates a barcode from the input string and saves it as a JPEG image file named "myBarcode.Jpeg." The specific encoding used is Code 128, which can represent alphanumeric characters.

Wyjaśnienie

The first line of code creates a new variable named myBarcode. It uses the BarcodeWriter.CreateBarcode method to generate a barcode based on the input string "12345ABC12345".

The second argument, BarcodeWriterEncoding.Code128, specifies the encoding type for the barcode. In this case, it's using the Code 128 encoding, which is commonly used for alphanumeric data. The resulting barcode is stored in the myBarcode variable.

The second line saves the generated barcode as a JPEG image file. The filename for the saved image is "myBarcode.Jpeg". The format of the saved image is JPEG (Joint Photographic Experts Group).

Wynik

The generated barcode is as:

This code can now be read using a barcode reading device.

Now, let's resize our barcode.

Resize Barcode

The following code will resize our barcode as per the given dimension.

static void Main(string[] args)
{
    // Create a barcode from the input string and specify encoding type as Code 128
    var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

    // Resize the barcode image to the specified width and height (in pixels)
    myBarcode.ResizeTo(800, 300);

    // Save the resized barcode image as a JPEG file
    myBarcode.SaveAsJpeg("myBarcode.Jpeg");
}

static void Main(string[] args)
{
    // Create a barcode from the input string and specify encoding type as Code 128
    var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

    // Resize the barcode image to the specified width and height (in pixels)
    myBarcode.ResizeTo(800, 300);

    // Save the resized barcode image as a JPEG file
    myBarcode.SaveAsJpeg("myBarcode.Jpeg");
}

Shared Sub Main(ByVal args() As String)
	' Create a barcode from the input string and specify encoding type as Code 128
	Dim myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128)

	' Resize the barcode image to the specified width and height (in pixels)
	myBarcode.ResizeTo(800, 300)

	' Save the resized barcode image as a JPEG file
	myBarcode.SaveAsJpeg("myBarcode.Jpeg")
End Sub

The code for creating and saving barcodes remains the same. Just add the additional line to resize the barcode.

The ResizeTo() method resizes the barcode image stored in the myBarcode variable. The method ResizeTo is called on the myBarcode object. The two arguments passed to ResizeTo are width and height. In this case, the width is set to 800 pixels and the height is set to 300 pixels.

In this way, we can set the minimum width and bar module height. The resulting barcode image will have these dimensions after resizing as shown below.

Obraz BarCode

Now, let's style our barcode.

Style Code 128 Barcode

Now, let's style our barcode by changing the background color and barcode color.

static void Main(string[] args)
{
    // Create a barcode from the input string and specify encoding type as Code 128
    var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

    // Resize the barcode image to the specified width and height (in pixels)
    myBarcode.ResizeTo(800, 300);

    // Change the background color of the barcode
    myBarcode.ChangeBackgroundColor(IronSoftware.Drawing.Color.Cornsilk);

    // Change the barcode color
    myBarcode.ChangeBarCodeColor(IronSoftware.Drawing.Color.Brown);

    // Save the styled barcode image as a JPEG file
    myBarcode.SaveAsJpeg("myBarcode.Jpeg");
}

static void Main(string[] args)
{
    // Create a barcode from the input string and specify encoding type as Code 128
    var myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128);

    // Resize the barcode image to the specified width and height (in pixels)
    myBarcode.ResizeTo(800, 300);

    // Change the background color of the barcode
    myBarcode.ChangeBackgroundColor(IronSoftware.Drawing.Color.Cornsilk);

    // Change the barcode color
    myBarcode.ChangeBarCodeColor(IronSoftware.Drawing.Color.Brown);

    // Save the styled barcode image as a JPEG file
    myBarcode.SaveAsJpeg("myBarcode.Jpeg");
}

Shared Sub Main(ByVal args() As String)
	' Create a barcode from the input string and specify encoding type as Code 128
	Dim myBarcode = BarcodeWriter.CreateBarcode("12345ABC12345", BarcodeWriterEncoding.Code128)

	' Resize the barcode image to the specified width and height (in pixels)
	myBarcode.ResizeTo(800, 300)

	' Change the background color of the barcode
	myBarcode.ChangeBackgroundColor(IronSoftware.Drawing.Color.Cornsilk)

	' Change the barcode color
	myBarcode.ChangeBarCodeColor(IronSoftware.Drawing.Color.Brown)

	' Save the styled barcode image as a JPEG file
	myBarcode.SaveAsJpeg("myBarcode.Jpeg")
End Sub

The code for generating and saving barcodes is the same. I've just added two additional lines for changing the background and barcode color. The explanation is as follows:

• ChangeBackgroundColor: The method ChangeBackgroundColor is called on the myBarcode object. This method changes the background color of the barcode image. The argument passed to ChangeBackgroundColor is IronSoftware.Drawing.Color.Cornsilk, which specifies the desired background color. In this case, the background color is set to Cornsilk, which is a pale yellowish color.

• ChangeBarCodeColor: The method ChangeBarCodeColor is called on the myBarcode object. This method changes the color of the barcode bars. The argument passed to ChangeBarCodeColor is IronSoftware.Drawing.Color.Brown, which specifies the desired barcode color. In this case, the barcode color is set to Brown.

Wynik

Our styled barcode is as:

Wyjaśnienie kodu

• The first line creates a variable named resultFromBarcode. It calls the BarcodeReader.Read method to read barcodes from the image file named "myBarcode.Jpeg". The result of this operation is stored in the resultFromBarcode variable.

• The second line starts a loop that iterates through each barcode value in the resultFromBarcode collection. The foreach loop allows us to process each barcode value one by one.

• Inside the loop, this line prints each barcode value to the console. The barcodeValue represents the content of a barcode that was read from the image.

The barcode value will be printed on the Console as shown below.

Wynik