public static void ProcessCheckBoxTreeNodeChanged(TreeNode treeNode, bool isChecked)
{
CheckedItem checkedItem = (CheckedItem)treeNode.Tag;
checkedItem.CurrentChecked = isChecked;
checkedItem.IsChanged = isChecked != checkedItem.OriginalChecked;
treeNode.Tag = checkedItem;
if (isChecked)
{
if (treeNode.Parent != null)
{
treeNode.Parent.Checked = true;
ProcessCheckBoxTreeNodeChanged(treeNode.Parent, true);
}
}
else
{
if (treeNode.Nodes.Count > 0)
{
foreach (TreeNode childNode in treeNode.Nodes)
{
childNode.Checked = false;
ProcessCheckBoxTreeNodeChanged(childNode, false);
}
}
}
}
/// <summary>
/// Collect Changed Item List From CheckedTreeView Control(Include Selected and Unselected)
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="treeNodes"></param>
/// <param name="selectedItemList"></param>
/// <param name="unselectedItemList"></param>
public static void CollectChangedItemList <T>(TreeNodeCollection treeNodes, List <T> selectedItemList, List <T> unselectedItemList)
{
if (treeNodes.Count > 0)
{
foreach (TreeNode treeNode in treeNodes)
{
CheckedItem checkedItem = (CheckedItem)treeNode.Tag;
if (checkedItem.IsChanged)
{
if (checkedItem.Value != null && checkedItem.Value != DBNull.Value)
{
if (checkedItem.CurrentChecked)
{
selectedItemList.Add((T)Convert.ChangeType(checkedItem.Value, typeof(T), CultureInfo.InvariantCulture));
}
else
{
unselectedItemList.Add((T)Convert.ChangeType(checkedItem.Value, typeof(T), CultureInfo.InvariantCulture));
}
}
}
CollectChangedItemList <T>(treeNode.Nodes, selectedItemList, unselectedItemList);
}
}
}
public static void ProcessCheckedListBoxItemCheck(object sender, ItemCheckEventArgs e)
{
CheckedListBox checkedListBox = (CheckedListBox)sender;
CheckedItem checkedItem = (CheckedItem)checkedListBox.Items[e.Index];
if (e.NewValue == CheckState.Checked)
{
checkedItem.CurrentChecked = true;
checkedItem.IsChanged = checkedItem.CurrentChecked != checkedItem.OriginalChecked;
}
else
{
checkedItem.CurrentChecked = false;
checkedItem.IsChanged = checkedItem.CurrentChecked != checkedItem.OriginalChecked;
}
checkedListBox.Items[e.Index] = checkedItem;
}