Select All Rows in GridView by clicking CheckBox in Header Row in Asp.Net C# | Swift Learn

Just creating check boxes doesn't make sense. It is needed to update or delete records by check.

im delete gridview all sqldata

im use button click method

GridView1.DeleteRow(GridView1.SelectedIndex);

this code menualy one one delete. Need to gridview1 page load event auto load all selectd and one click by all gridview data delete.

Hi it's code works fine I have one issue on that how to uncheck gridview select all checkbox when one checkbox is unchecked in c#

how to count number of checkbox checked.?