How to disable touch scrolling event of UnityEngine.UIElements.ScrollView?

Question

enter image description here

I have used ScrollView and create a VisualElement as a child. I want to treat mouse event on the child element. When mousemove event of child element is called, scrolling event of ScrollView is also called. I want to prevent scrolling event of ScrollView when dragging some part of child element. Is it possible?

private ScrollView SV_SmileArea; 

public void OnMouseMoveEvent(MouseMoveEvent evt)
{
         SV_SmileArea.verticalScroller.SetEnabled(false);
        SV_SmileArea.horizontalScroller.SetEnabled(false);
}

It doesn't work.

Any help will be appreciated.