ImageValueConverter Class
A Value Converter which can be used to convert Image objects to an array of bytes.
Namespace: DevExpress.Xpo.Metadata
Assembly: DevExpress.Xpo.v24.1.dll
NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo
#Declaration
public class ImageValueConverter :
ValueConverter
#Remarks
The following example shows how to convert the value of the Image property to an array of bytes when saving it in a data store.
using DevExpress.Xpo;
public class SampleImageClass : XPObject {
private System.Drawing.Image image;
public SampleImageClass(Session session) : base(session) {}
[ValueConverter(typeof(DevExpress.Xpo.Metadata.ImageValueConverter))]
public System.Drawing.Image Image {
get { return image; }
set {
SetPropertyValue(nameof(Image) , ref image, value);
}
}
}
ImageValueConverter requires System.Drawing.Common 5.0+. In Xamarin/Mono projects, change your image property type from System.Drawing.Image
to byte[]
.
using DevExpress.Xpo;
[Delayed]
public byte[] Image {
get { return GetDelayedPropertyValue(nameof(Image)); }
set { SetDelayedPropertyValue<byte[]>(nameof(Image), value); }
}
Note
To run your application on Linux and mac
Ubuntu: sudo apt-get update -y && sudo apt-get install -y libgdiplus
.
macbrew install mono-libgdiplus
.