Hello Richard,

Isn't it resized also when browser resizes? Please see my below screenshot. If this is not what you meant, please send me your resize behaviour in recording video. I would like to know in detail which part the issue.

Regards,
Handy

Hi

not I want to achieve something like attached screenshot

Hello,

If you use the current structure, It is not possible. You would need to change it into others.
In current sample, it use <grid>. The content itself inside, does not have height as you expected. It could not auto fill when using grid. I suggest you to have DockPanel. You can use IsFillElement to set the DockPanel to be fill all the content.

Regards,
Handy