Unable to change Pagesize of Datagrid Programmatically

Hi Radzen Team,
I am doing Search in DataGrid.

  1. Grid.reload is not working
  2. Unable to access Pagesize Dropdown Programmatically. I need to change the value programmatically.
    image
    This is my Page.

Not sure what's the purpose of assigning an empty array however if you want this DropDown to disappear from the pager the default value if PageSizeOptions is null.

How to access Pagesize Dropdown Programmatically. I need to change the value programmatically.

You cannot access the DropDown since this is internal component. You can use PageSize and PageSizeOptions properties.

I am new to Radzen.
How to use these files. I upgraded Radzen Library and I am unable to use the Pagesize Functionalities.
I found this