mes-client/UAS_MES_JH/CustomControl/ButtonUtil/ChooseAllButton.cs

using System;
using System.Windows.Forms;

namespace UAS_MES_NEW.CustomControl.ButtonUtil
{
    public partial class ChooseAllButton : Button
    {
        DataGridView DGV;
        bool AllChecked = false;

        public ChooseAllButton()
        {
            InitializeComponent();
        }

        public void ChooseAll(DataGridView dgv)
        {
            DGV = dgv;
            Click += ChooseAll_Click;
        }

        private void ChooseAll_Click(object sender, EventArgs e)
        {
            if (AllChecked)
            {
                for (int i = 0; i < DGV.RowCount; i++)
                {
                    DGV.Rows[i].Cells[0].Value = false;
                }
                AllChecked = false;
            }
            else
            {
                for (int i = 0; i < DGV.RowCount; i++)
                {
                    DGV.Rows[i].Cells[0].Value = true;
                }
                AllChecked = true;
            }
        }
    }
}