private void DataGridView_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Right)
{
return;
}
var hti = SelectedDataGridView.HitTest(e.X, e.Y);
if (hti.RowIndex < 0 || SelectedDataGridView.Rows[hti.RowIndex].Selected)
{
return;
}
SelectedDataGridView.ClearSelection();
SelectedDataGridView.Rows[hti.RowIndex].Selected = true;
}
private void InstanceContextMenu_Opening(object sender, System.ComponentModel.CancelEventArgs e)
{
var mousepos = MousePosition;
if (!(sender is ContextMenuStrip cms))
{
return;
}
var relMousePos = cms.PointToClient(mousepos);
if (cms.ClientRectangle.Contains(relMousePos))
{
var dgvRelMousePos = SelectedDataGridView.PointToClient(mousepos);
var hti = SelectedDataGridView.HitTest(dgvRelMousePos.X, dgvRelMousePos.Y);
if (hti.RowIndex == -1)
{
e.Cancel = true;
}
}
else
{
e.Cancel = true;
}
}
