how to get the selected rows of GridView with CheckBox in ASP.Net

Hi, here is how you can check if the checkbox is selected or not

foreach (DataGridViewRow row in dataGridView.Rows)
                {
                    //we check if the cell number 5(the checkbox) is checked or not 
                    if (Convert.ToBoolean(row.Cells[4].Value) == true)
                    {
                        //here you can do your save in database operation
                    }
                }

I personllay hate working with datagrid data directly.

I always save my data in a list and then put that data in the datagrid.

Operation will be much easier, and the possibilites to make error is minor.

If you don't have a checked properties in your class object, then you can manage to add a neww properties using inheritence(create a new class that inherit from your main class and add a booleen prop for checked items)

Hope it helps