Getting this error:

An exception of type 'MicroFour.StrataFrame.Business.BusinessLayerException' occurred in MicroFour StrataFrame Business.dll but was not handled in user code. Additional information: An error occurred while refreshing the data from field 'tbvo_Groupi.GI_PICTURE' to property 'Image' on control 'pictureBox1.'  Are you missing FieldPropertyDescriptor for a custom property?

pictureBox1 is MicroFour.StrataFrame.UI.Windows.Forms.PictureBox

The GI_PICTURE column in a SQL table has the type: varbinary(max).

The BO tbvo_Groupi column GI_PICTURE has a type of System.Byte[]. The Custom Field Properties NULL Value Option is "Don't Allow Nulls". The box for "Use Custom Code" is checked. Here is the custom code:

[Browsable(false), BusinessFieldDisplayInEditor(), Description("GIpicture"), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public System.Drawing.Bitmap GI_PICTURE
        {
            get
            {
                object loValue;
                loValue = this.CurrentRow["GI_PICTURE"];
                if (loValue == DBNull.Value)
                {
                    return new System.Drawing.Bitmap(1, 1);
                }
                else
                {
                    try
                    {
                        return (System.Drawing.Bitmap)this.BinaryFormatter.Deserialize(new System.IO.MemoryStream((Byte[])loValue));
                    }
                    catch
                    {
                        return new System.Drawing.Bitmap(1, 1);
                    }
                }
            }
            set
            {
                System.IO.MemoryStream loStream = new System.IO.MemoryStream();
                this.BinaryFormatter.Serialize(loStream, value);
                this.CurrentRow["GI_PICTURE"] = loStream.ToArray();
            }
        }


 

Does the exception show an inner exception?  Loos like your code is good.  The only place I can see that it would fail is if the business object is empty, then when you access CurrentRow, it will throw an exception telling you the count is 0 and the row index is -1.  If the image was improperly serialized, then it would return a 1x1 BMP, so that's not it.  Also, can you put a breakpoint in the property and see what it's doing?  You could also set VS to break when an exception is thrown.  Debug -> Exceptions -> Checkmark Common Language Runtime exceptions.

Here is the result:

Not sure what a Field Property Descriptor is, but here is debug info on the GI_PICTURE column:

Ah, just remembered that there is a checkbox in the customization dialog in the BOMapper that needs to be checked.  It tells the BOMapper to create the property descriptor for the custom property.  Since you can use the custom code to snuff the property creation, we don't put out a property descriptor by default.  

I checked the Create Descriptor box and get this error when I compile the BO:

Ah, the type has changed.  Uncheck the box and you will need to override the GetCustomBindablePropertyDescriptors method in the main code file of the BO:

One last issue. If the GI_PICTURE column is null, the code fails with a null:

        protected override FieldPropertyDescriptor[] GetCustomBindablePropertyDescriptors()
        {
            List<FieldPropertyDescriptor> r = new List<FieldPropertyDescriptor>();

            r.Add(new ReflectionPropertyDescriptor("GI_PICTURE", typeof(System.Byte[])));
 

            //-- Return results
            return r.ToArray();
        }


Not sure if I need to wrap in a try/catch and in the catch insert some code. Or in the BO Mapper insert some code if null.

Oh, the typeof needs to be the BO type, not the type of the property.

absolutely awesome. Worked like a charm.