What do you mean by increase the data handling? If you are talking about the initial entry load then you can change it by changing the Page Size below from default 10 to any number. Hope that helps.
Can we implement text box in a datagrid like introducing in a listview?
Answer – No you cant, that's why we normally design a list view to look like a grid at times.
You can try the auto load more appstore widget seen here. This will automatically load more entries in your listview if you reach the end of your list.
In addition to this you may also want to style your listview to look like a datagrid using the listview control widget seen here.
You can add a text box in a normal listview. I just haven’t tried it when using it with the listview control widget.