GalleryControl arrange GalleryItems by Drag and Drop

You're welcome, Uwe. Please do not hesitate to contact us if you find an issue in our product or run into a problem when using it. We will be happy to assist you.
Thanks,
Ted

Hi, I have implemented this one but when I`m adding MyGalleryControl to a Form and edit some properties in MyGalleryControl.Gallery the designer makes a new MyGalleryControlGallery and on startup it fails (Object reference not set to an instance of an object.)

If I change AllowHoverImages on my custom gallery the designer referers directly to a MyGalleryControlGallery. This one failes on startup with an Object reference not set to an instance of an object.

C#
//  
 // myGalleryControlGallery1  
 //  
 this.myGalleryControlGallery1.AllowHoverImages = true;  

But If I`m using the GalleryControl it referers to the gallery controls gallery like this.

C#
//  
         // galleryControlGallery1  
         //  
         this.galleryControl1.Gallery.AllowHoverImages = true;  

This works, but not my custom implementation.
I have implemented it as the sample provided.

Hi Ronny,
To avoid this shortcoming, I suggest you apply the DesignerSerializationVisibility attribute to the Gallery property in your descendant:

C#
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]  
public new MyGalleryControlGallery Gallery {  
    get { return (MyGalleryControlGallery)base.Gallery; }  
}  

Visual Basic
<DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _  
Public Shadows ReadOnly Property Gallery() As MyGalleryControlGallery  
    Get  
        Return CType(MyBase.Gallery, MyGalleryControlGallery)  
    End Get  
End Property  

Feel free to contact us if you need further assistance.