如何使用按钮单击的参数更新DataTable ?

I have a DataTable that is displaying all the records when the page is open. After that, when I select an item in my DropDownList, I need to filter the values. Filtering is working fine, but I have a problem refreshing the DataTable. I am returning the right JSON, but I don't know how to display it and refresh the DataTable. When I click on my button, it does the get method and returns the JSON, that I need to put in the DataTable. How can I do that?I have a DataTable that is displaying all the r