AnyBitmap to System.Drawing.Bitmap in .NET Framework

Dans une application de bureau .NET Framework telle que WinForms, l'affectation d'un IronBarcode AnyBitmap directement à un System.Drawing.Image ou Bitmap échoue à la compilation. Un cas courant est la liaison d'un code-barres généré à un PictureBox, qui n'accepte que des objets System.Drawing.Image.

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

Le code ci-dessous génère l'erreur :

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()

Les deux BarcodeWriter.Image et .ToBitmap() renvoient un IronSoftware.Drawing.AnyBitmap. Ce type prend en charge la conversion implicite vers System.Drawing.Bitmap ou Image, mais uniquement sur .NET 6, .NET 7, .NET 8, ou supérieur. Sur .NET Framework, les opérateurs implicites et le pontage de type interne ne se résolvent pas toujours, surtout lorsque les types proviennent de différentes bibliothèques ou couches de compatibilité.

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