Question

i have this code in my project that i do it with a help in this web site, my code check the datagridviewcheckboxcolumn checked state after that it checks another cell of datagridview with these to checks it execute a method, all my code is inside a button click. this is my code

private void update_bt_Click(object sender, EventArgs e)
{
    var current_year = DateTime.Today.Year;
    var last_year = DateTime.Today.Year - 1;
    for (int i = 0; i < dgv_student_update.Rows.Count; i++)
    {
        Func<DataGridViewRow, int, int> cellValue = (row, j) =>
        {
            int.TryParse(row.Cells["stg_id"].Value.ToString(), out j);
            return j;
        };
        DataGridViewCheckBoxCell chkchecking = dgv_student_update.Rows[i].Cells["result"] as DataGridViewCheckBoxCell;
        if (Convert.ToBoolean(chkchecking.Value) == true)
        {
            //check if cell[3] in each row equal to stage id (1=first stage).
            if (cellValue(dgv_student_update.Rows[i], 3) == 1)
            {
                sc.year_student_update(
                Convert.ToInt32(dgv_student_update.Rows[i].Cells[1].Value),
                dgv_student_update.Rows[i].Cells[2].Value.ToString(), 2);
            }
        }
    }
}

when i click button it does not execute the "year_student_update()" method but at the second click it do the job. anyone can help me please?

Answer 1

Your method sc.year_student_update(... is inside the if condition if (cellValue(dgv_student_update.Rows[i], 3) == 1) and most probably that's not true. comment that if block and see if your method hits. If so, then you should check why your if block not satisfying.

my code does not execute the at first time? why?

1 个答案: