How to DIsable Button When DataGridView Data Source is empty? C#

Question

I have DataGridView with a empty DataTable as DataSource . When the main form loads it will show an empty DataGridView so user can entry data on it. I want to disable the Save Data menu when DataGridView is empty. I tried this code :

private void dGV_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {

            DataTable dt = dGV.DataSource as DataTable;
            int d = dt.Columns.Count + 1;
            foreach (var column in dt.Columns.Cast<DataColumn>().ToArray())
            {
                if (dt.AsEnumerable().All(dr => dr.IsNull(column)))
                    d--;
            }
            if (d > 0)
            {
                saveDataToolStripMenuItem.Enabled = true;
            }
            else {
                saveDataToolStripMenuItem.Enabled = false;
            }
        }

The Save Data menu will be disabled when form loads

and it will be enabled when I entry a value on the dGV .

But the Save Data menu wont be disabled when I delete that value and the dGV becomes empty again.

Any suggestion?

Answer 1

1- When the form loads, check If dGV is empty, then set the menu button disabled.

2- When creating a new entry, make button enabled.

3- When Remove button is clicked. Check if dGV is empty or have records, then again disable the menuitem if it is empty.