phattrienweb

decimal Total = 0M;
    int totalItems = 0;
    decimal percent = 0M;
    protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            Label markLabel = (Label)e.Row.FindControl("markLabel");
            int mark = Convert.ToInt32(markLabel.Text);
            Total += mark;
            totalItems += 1;
        }
        if (e.Row.RowType == DataControlRowType.Footer)
        {
            Label totalLabel = (Label)e.Row.FindControl("totalLabel");
            totalLabel.Text = Total.ToString();
        }
    }
    protected void GridView2_DataBound(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridView2.Rows)
        {
            Label markLabel = (Label)row.FindControl("markLabel");
            int mark = Convert.ToInt32(markLabel.Text);
            percent = (mark / Total) * 100;
            Label percentLabel = (Label)row.FindControl("percentLabel");
           
            if (percent == decimal.Truncate(percent)) // no decimal places, is a whole percent
            {
                percentLabel.Text = percent.ToString("N0") + "%";
            }
            else if (percent * 10 == decimal.Truncate(percent * 10)) // dealing with a one decimal place value
            {
                percentLabel.Text = percent.ToString("N1") + "%";
            }
            else if (percent * 100 == decimal.Truncate(percent * 100)) // two decimal place value
            {
                percentLabel.Text = percent.ToString("N2") + "%";
            }
            else
            {
                percentLabel.Text = percent.ToString() + "%"; // this is the 3 decimal place representation
            }
        }
    }