private void UpdateButtons()
{
if (dataGridView1 == null || dataGridView1.IsDisposed)
{
return;
}
bool changed = false;
foreach (DataGridViewRow row in dataGridView1.Rows)
{
DataGridViewDisableButtonCell buttonCell =
(DataGridViewDisableButtonCell)row.Cells["Use"];
bool old_val = buttonCell.Enabled;
buttonCell.Enabled = (bool)row.Cells["Present"].Value;
if (old_val != buttonCell.Enabled)
{
changed = true;
}
}
if (changed)
{
dataGridView1.Invalidate();
}
}
// Override the Clone method so that the Enabled property is copied.
public override object Clone()
{
DataGridViewDisableButtonCell cell =
(DataGridViewDisableButtonCell)base.Clone();
cell.Enabled = this.Enabled;
return(cell);
}
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex < 0)
{
return;
}
if (e.ColumnIndex == dataGridView1.Columns["Present"].Index)
{
DataGridViewDisableButtonCell buttonCell =
(DataGridViewDisableButtonCell)dataGridView1.
Rows[e.RowIndex].Cells["Use"];
buttonCell.Enabled =
(bool)dataGridView1.Rows[e.RowIndex].Cells["Present"].Value;
dataGridView1.Invalidate();
}
}
