AnyBitmap to System.Drawing.Bitmap in .NET Framework

Em um aplicativo de desktop .NET Framework, como WinForms, atribuir um AnyBitmap do IronBarcode diretamente a um System.Drawing.Image ou Bitmap falha em tempo de compilação. Um caso comum é vincular um código de barras gerado a um PictureBox, que só aceita objetos System.Drawing.Image.

Cannot implicitly convert type 'IronSoftware.Drawing.AnyBitmap' to 'System.Drawing.Image'

O código abaixo aciona o erro:

var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);
// These lines cause compile-time errors
Image myBarcodeImage = myBarcode.Image;
Bitmap myBarcodeBitmap = myBarcode.ToBitmap();

var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);
// These lines cause compile-time errors
Image myBarcodeImage = myBarcode.Image;
Bitmap myBarcodeBitmap = myBarcode.ToBitmap();

Dim myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8)
' These lines cause compile-time errors
Dim myBarcodeImage As Image = myBarcode.Image
Dim myBarcodeBitmap As Bitmap = myBarcode.ToBitmap()

Ambos BarcodeWriter.Image e .ToBitmap() retornam um IronSoftware.Drawing.AnyBitmap. Esse tipo suporta conversão implícita para System.Drawing.Bitmap ou Image, mas somente no .NET 6, .NET 7, .NET 8 ou superior. Em .NET Framework, os operadores implícitos e a ponte de tipos internos nem sempre são resolvidos, especialmente quando os tipos vêm de bibliotecas diferentes ou camadas de compatibilidade.

dotnet add package System.Drawing.Common

dotnet add package System.Drawing.Common

Install-Package System.Drawing.Common

Install-Package System.Drawing.Common

<PackageReference Include="System.Drawing.Common" Version="8.0.0" />

<PackageReference Include="System.Drawing.Common" Version="8.0.0" />

var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);
myBarcode.ResizeTo(400, 100); // Optional resizing
using (var ms = myBarcode.ToWindowsBitmapStream())
{
    pictureBox1.Image = Image.FromStream(ms); // Works in .NET Framework
}

var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);
myBarcode.ResizeTo(400, 100); // Optional resizing
using (var ms = myBarcode.ToWindowsBitmapStream())
{
    pictureBox1.Image = Image.FromStream(ms); // Works in .NET Framework
}

Dim myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8)
myBarcode.ResizeTo(400, 100) ' Optional resizing
Using ms = myBarcode.ToWindowsBitmapStream()
    pictureBox1.Image = Image.FromStream(ms) ' Works in .NET Framework
End Using