Magento 2 hide button Search from Grid(Created using block)

Question

I want to hide Search button from admin grid which is created using blocks and not ui component,

How should do I that?

Answer 1

The search button is added in a core file

at 

vendor/magento/module-backend/Block/Widget/Grid.php 

with function 

public function getSearchButtonHtml()
{
    return $this->getChildHtml('search_button');
}

So in my module's grid file I have added same function as follows to remove Search button

public function getSearchButtonHtml()
{
    return '';
}

Thank You.