Get Button to show BottomRight of a Dialog

Hi,

You need to wrap the dialog contents in a RadzenStack that contains two containers - one for the buttons and one for the dialog's content:

<RadzenStack Gap="1rem" Orientation="Orientation.Vertical" JustifyContent="JustifyContent.SpaceBetween" Style="height: 100%;">
    <RadzenStack>
        Dialog Content
    </RadzenStack>
    <RadzenStack Orientation="Orientation.Horizontal" JustifyContent="JustifyContent.End" Gap="0.5rem">
         <RadzenButton Click="@((args) => DialogService.Close(true))" Variant="Variant.Flat" Text="Close" Style="width: 120px" @ref="_closeButton"/>
     </RadzenStack>
</RadzenStack>

In addition, add the following style to adjust the height of the dialog's content container as it is currently designed to wrap around it's contents:

.rz-dialog-content {
    flex-basis: 100%;
}

Here is the end result: