public void AddLayer(LayerCollection collectionLayer)
{
// disable events temporarily
treeView1.AfterCollapse -= treeView1_AfterCollapse;
treeView1.AfterExpand -= treeView1_AfterExpand;
treeView1.Nodes.Clear();
TreeNode groupNode = null;
List <TreeNode> groupNodes = new List <TreeNode>();
foreach (LayerGroup layerGroup in collectionLayer.OrderByDescending(elm => elm.Position))
{
var group = groupNodes.FirstOrDefault(elm => elm.Text == layerGroup.Group.Name);
if (group == null)
{
// group toevoegen
groupNode = new TreeNode(layerGroup.Group.Name);
groupNodes.Add(groupNode);
if (layerGroup.Group.Expanded)
{
groupNode.Expand();
}
}
// layer toevoegen
TreeNode layerNode = new TreeNode();
layerNode.Text = layerGroup.Name;
layerNode.Checked = layerGroup.LayerVisible;
layerNode.Tag = layerGroup.Handle;
groupNode.Nodes.Add(layerNode);
}
treeView1.Nodes.AddRange(groupNodes.ToArray());
// Enable events again
treeView1.AfterCollapse += treeView1_AfterCollapse;
treeView1.AfterExpand += treeView1_AfterExpand;
}