我正在重写我的应用程序,在那里我使用Brad Barnhill(Working table just with text)的Barcode Image Generation Libary
创建条形码图像。
在本文中,所有内容都解释了如何在Windows窗体中执行此操作。但现在 - 使用Wpf - 有一些错误。例如:函数Encode
的结果返回System.Drawing.Image
,但当我想在Wpf Image Control
中显示此图片时,Source
属性需要System.Windows.Media.ImageSource
。< / p>
所以我做了一些关于如何在Drawing.Image
中转换Media.ImageSource
的研究。我发现了一些片段,但它们没有按预期工作。
目前我使用此代码:
// Import:
using Media = System.Windows.Media;
using Forms = System.Windows.Forms;
// Setting some porperties of the barcode-object
this.barcode.RotateFlipType = this.bcvm.Rotation.Rotation;
this.barcode.Alignment = this.bcvm.Ausrichtung.Alignment;
this.barcode.LabelPosition = this.bcvm.Position.Position;
// this.bcvm is my BarcodeViewModel for MVVM
var img = this.barcode.Encode(
this.bcvm.Encoding.Encoding,
this.bcvm.EingabeWert,
this.bcvm.ForeColor.ToDrawingColor(),
this.bcvm.BackColor.ToDrawingColor(),
(int)this.bcvm.Breite,
(int)this.bcvm.Hoehe
);
this.imgBarcode.Source = img.DrawingImageToWpfImage();
this.imgBarcode.Width = img.Width;
this.imgBarcode.Height = img.Height;
// My conversion methode. It takes a Drawing.Image and returns a Media.ImageSource
public static Media.ImageSource ToImageSource(this Drawing.Image drawingImage)
{
Media.ImageSource imgSrc = new Media.Imaging.BitmapImage();
using (MemoryStream ms = new MemoryStream())
{
drawingImage.Save(ms, Drawing.Imaging.ImageFormat.Png);
(imgSrc as Media.Imaging.BitmapImage).BeginInit();
(imgSrc as Media.Imaging.BitmapImage).StreamSource = new MemoryStream(ms.ToArray());
(imgSrc as Media.Imaging.BitmapImage).EndInit();
}
return imgSrc;
}
运行此代码时,转换图像(并将其指定给图像控件)没有任何显示
答案 0 :(得分:1)
此转换方法应该有效:
public static ImageSource ToImageSource(this System.Drawing.Image image)
{
var bitmap = new BitmapImage();
using (var stream = new MemoryStream())
{
image.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
stream.Position = 0;
bitmap.BeginInit();
bitmap.CacheOption = BitmapCacheOption.OnLoad;
bitmap.StreamSource = stream;
bitmap.EndInit();
}
return bitmap;
}
如果System.Drawing.Image
实际上是System.Drawing.Bitmap
,您还可以使用其他一些转换方法,如下所示:fast converting Bitmap to BitmapSource wpf