void UpdateCheckChildren(C1.Win.C1FlexGrid.Node node)
{
var checkState = node.Checked;
foreach (C1.Win.C1FlexGrid.Node child in node.Nodes)
{
child.Checked = checkState;
UpdateCheckChildren(child);
}
}
void UpdateCheckParent(C1.Win.C1FlexGrid.Node node)
{
// get this node's parent
var parent = node.Parent;
if (parent != null)
{
// count checked/unchecked children
int cntChecked = 0;
int cntUnchecked = 0;
int cntGrayed = 0;
foreach (C1.Win.C1FlexGrid.Node child in parent.Nodes)
{
switch (child.Checked)
{
case C1.Win.C1FlexGrid.CheckEnum.Checked:
cntChecked++;
break;
case C1.Win.C1FlexGrid.CheckEnum.Unchecked:
cntUnchecked++;
break;
case C1.Win.C1FlexGrid.CheckEnum.Grayed:
cntGrayed++;
break;
}
}
// update parent's check state
if (cntGrayed > 0 || (cntChecked > 0 && cntUnchecked > 0))
{
parent.Checked = C1.Win.C1FlexGrid.CheckEnum.Grayed;
}
else if (cntChecked > 0 && cntUnchecked == 0)
{
parent.Checked = C1.Win.C1FlexGrid.CheckEnum.Checked;
}
else if (cntUnchecked > 0 && cntChecked == 0)
{
parent.Checked = C1.Win.C1FlexGrid.CheckEnum.Unchecked;
}
// update grandparent as well
UpdateCheckParent(parent);
}
}