WPF图像到字节[]

问题描述

我正在尝试从 System.Windows.Controls.Image 转换为 byte[] 但我不知道 Image 类中的哪种方法可以帮助解决这个场景，顺便说一句，我真的不知道该怎么办，因为在我的 LINQ 模型中，该字段显示为 Binary 类型，如果我想将它保存为 byte[] ，我必须更改它 类型?

I'm trying to convert from System.Windows.Controls.Image to byte[] and I didnt know which method from Image class could help in this scenary, by the way I really dont know what should I do, cause in my LINQ model the field appears as Binary type, I have to change this if I want to save it like a byte[] type?

我发现代码张贴在这里，但没有使用 WPF:

I found code posted here, but without using WPF:

Bitmap newBMP = new Bitmap(originalBMP, newWidth, newHeight);
System.IO.MemoryStream stream = new System.IO.MemoryStream();
newBMP.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp);
PHJProjectPhoto myPhoto = new PHJProjectPhoto {
    ProjectPhoto = stream.ToArray(), // <<--- This will convert your stream to a byte[]
    OrderDate = DateTime.Now,
    ProjectPhotoCaption = ProjectPhotoCaptionTextBox.Text,
    ProjectId = selectedProjectId
};

推荐答案

真正的解决方案...如果您想在 ORM 上的数据库映射字段为 Byte[]/时从 System.Windows.Control.Image 保存 jpg 图像byte[]/Bynary

Real Solution... if want to save jpg images from an System.Windows.Control.Image when your database mapped field on your ORM is Byte[] / byte[] / Bynary

public byte[] getJPGFromImageControl(BitmapImage imageC)
{
       MemoryStream memStream = new MemoryStream();
        JpegBitmapEncoder encoder = new JpegBitmapEncoder();
        encoder.Frames.Add(BitmapFrame.Create(imageC));
        encoder.Save(memStream);
        return memStream.ToArray();
}

调用:

getJPGFromImageControl(firmaUno.Source as BitmapImage)

希望有所帮助:)

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