Commented Unassigned: Not able to select all row of Datagrid [20736]

Can't able to select all row by Ctrl+A ,there are some rows which are missing from selection when i press Ctrl+A in datagrid.
Any suggestion
Comments: ** Comment from web user: ashu_avni **

So should I create my own DataGridRow ,DataGridTextColumn or DataGrid classes?
Which are inherited by core control and override those classes to solve this problem as you have mentioned into your code.