Hello,

Setting the AutoSize property to false is not recommended as this way the layout system will not measure and arrange your button. The property can be set to false in some special cases when you have custom layout. Custom layout would mean special measure and arrange logic which is done at runtime. That`s why the Size property on the elements is not serialized and this is by design.

Your scenario is clear, if I`m not mistaken, you have smaller images, and you would like to display them centered in an image element which is 48x48. The already suggested approach may not entirely fit this scenario, so I will suggest a different solution which is also working in the designer. All you need to do is to set the MinSize property of the ImagePrimitive element:

I am also attaching my sample project. I hope that the suggested approach would fit your local setup.

Regards,
Hristo
Progress Telerik

Hello,

In order to achieve the desired result please set the ImageScaling property of the image primitive to SizeToFit. Then you can also specify its ScaleSize property: 

this.radButtonElement1.Image = Properties.Resources.cloud;
this.radButtonElement1.TextImageRelation = TextImageRelation.ImageAboveText;
this.radButtonElement1.ImagePrimitive.ImageScaling = Telerik.WinControls.Enumerations.ImageScaling.SizeToFit;
this.radButtonElement1.ImagePrimitive.ImageLayout = ImageLayout.Stretch;
this.radButtonElement1.ImagePrimitive.ScaleSize = new Size(48, 48);

After saving the changes and reopening the designer you will see the image set to the radButtonElement1. Please see the implemented solution in the attached project.

Regards,
Dimitar
Progress Telerik

Hello, MyeongSeong,

This item is planned for the current iteration of handling bug fixes. I can't give you an exact time frame when it will be fixed. However, we will do our best to address it in the upcoming service pack.

Stay tuned. Make sure that you click the Follow button in order to get notified once the status is changed.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

Hello, MyeongSeong, 

I have tried to reset the alignment first:

Then, you are allowed to set the property to MiddleCenter:

However, saving the changes and reopening the designer, it would produce the same middle left alignment. It seems that the alignment is bound:

It is necessary to manage the RadButtonElement.ImageAlignemnt:

Please give it a try and see how it works for your project.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

Hello, MyeongSeong,   

You can center the image by managing the ImagePrimitive.Alignment property:

I believe that it would fit your scenario.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik