/// <summary>
/// delete group and all child nodes
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ToolStripMenuItem3_Click(object sender, EventArgs e) {
try {
using(var objProvider = new MailProvider()) {
//get parent group node
Group objParentGroup = objProvider.GetGroup((int)treeView1.SelectedNode.Tag, treeView1.SelectedNode.Name);
//get receiver node
Receiver objReceiver = objProvider.GetReceiver((int)treeView1.SelectedNode.Tag, treeView1.SelectedNode.Name);
//if selected is receiver node
if(objReceiver != null) {
objProvider.RemoveReceiver(objReceiver);
}
//if selected is group parent node
if(objParentGroup != null) {
//get all childs Recievers
List<Group> objChildsToDeleteList = objProvider.Base.Groups.
Where(gr => gr.LeftKey >= objParentGroup.LeftKey && gr.RightKey <= objParentGroup.RightKey).ToList();
//delete all childs
foreach(var node in objChildsToDeleteList) {
List<Receiver> objReceiversList = objProvider.Base.Receivers.Where(r => r.Group.Id == node.Id).ToList();
for(int iJ = 0; iJ < objReceiversList.Count; ++iJ) {
objProvider.RemoveReceiver(objReceiversList[iJ]);
}
objProvider.RemoveGroup(node);
}
//update parent branch
List<Group> objParentsList = objProvider.Base.Groups.Where(gr => gr.RightKey > objParentGroup.RightKey && gr.LeftKey < objParentGroup.LeftKey).ToList();
foreach(var node in objParentsList) {
node.RightKey = node.RightKey - (objParentGroup.RightKey - objParentGroup.LeftKey + 1);
}
//update other childs
List<Group> objChildList = objProvider.Base.Groups.Where(gr => gr.LeftKey > objParentGroup.RightKey).ToList();
foreach(var node in objChildList) {
node.LeftKey = node.LeftKey - (objParentGroup.RightKey - objParentGroup.LeftKey + 1);
node.RightKey = node.RightKey - (objParentGroup.RightKey - objParentGroup.LeftKey + 1);
}
}
}
UpdateTree();
}
catch(Exception ex) {
MessageBox.Show(ex.Message);
}
}