asp.net gridview checkbox selection

Question

Need some help to solve this.

I have a gridview and inside the gridview I have a checkbox and after clicking the checkbox, I am doing a postback event and trying to

Answer 1

Try this also if above not working exactly

DataTable dtGetStTable = (DataTable)ViewState["dtNewStudents"];

//Looping throgh Grid and deleting row after finding the checked row
for (int i = dtGetStTable.Rows.Count - 1; i > -1; i--)
{
GridViewRow row = GridView1.Rows[i];
bool isChecked = ((CheckBox)row.FindControl("CheckBox1")).Checked;

if (isChecked)
{
    try
    {
        string RollNo = dtGetStTable.Rows[i]["RollNo"].ToString();
        string Class = dtGetStTable.Rows[i]["Class"].ToString();
        string Division = dtGetStTable.Rows[i]["Division"].ToString();
        //Deleting the Reocrd from DataBase
        TotalRecordDeleted += objSRE.DeleteTheSelectedRecord(RollNo, Class, Division);

        dtGetStTable.Rows[i].Delete();
        dtGetStTable.AcceptChanges();
    }
    catch (Exception ex)
    {

        //throw;
    }
}

}

Answer 2

Try this:

CheckBox chkBx = sender as CheckBox;

Rather than iterate all the rows.

I haven't used CheckBox's in a GridView in this way myself. Usually I would use the GridView's OnRowCommand event instead and use the RowIndex or CommandArgument value to update the database.

Thinking about it OnRowcommand could be tricky for a CheckBox to fire, a better solution might be sticking with the CheckChanged event of the checkbox and navigate up to the GridViewRow serverside using controls NamingContainer. Something like:

GridViewRow row = chkBx.NamingContainer as GridViewRow;

I'm assuming the goes CheckBox => Cell => Row if you Google ASP.NET NamingContainer you'll get some more specifics.