private void WriteNodes(StreamWriter sw, TreeNodeCollection treeNodeCollection, Int32 ParentID)
{
foreach (TreeNode n in treeNodeCollection)
{
CurrentNodeID++;
NodeTag ntold = (NodeTag)n.Tag;
NodeTag nt = new NodeTag(CurrentNodeID, ParentID, ntold.ItemID, ntold.CSROnly);
StringBuilder sb = new StringBuilder();
sb.Append(nt.ID);
sb.Append(",");
sb.Append(nt.ParentID);
sb.Append(",");
sb.Append(n.Text);
sb.Append(",");
sb.Append(nt.ItemID);
sb.Append(",");
sb.Append(n.Checked ? 1:0);
sb.Append(",");
sb.Append(nt.CSROnly ? 1 : 0);
if(CurrentNodeID>1)
sw.WriteLine(sb.ToString());
if (n.Nodes.Count > 0)
WriteNodes(sw, n.Nodes, CurrentNodeID);
}
}
private void LoadNodes(String filename)
{
StreamReader sr = null;
try
{
sr = new StreamReader(filename);
}
catch (Exception Exception){ MessageBox.Show("Problem opening file: \n" + Exception.Message); return; }
if (sr == null) return;
ClearNodes();
String temp = sr.ReadToEnd();
sr.Close();
String[] nodes = temp.Split(new char[] { '\n' });
foreach (string s in nodes)
{
String[] data = s.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
if (data.Length == 0) continue;
if (data.Length != 6)
{
MessageBox.Show("Problem parsing line: " + s);
continue;
}
NodeTag tag = new NodeTag();
tag.ID = Convert.ToInt32(data[0]);
tag.ParentID = Convert.ToInt32(data[1]);
TreeNode node = new TreeNode(data[2]);
tag.ItemID = Convert.ToInt32(data[3]);
node.Checked = Convert.ToInt32(data[4]) == 1;
tag.CSROnly = Convert.ToInt32(data[5]) == 1;
node.Tag = tag;
TreeNode parent = GetNode(treeView1.Nodes, tag.ParentID);
if (parent != null)
parent.Nodes.Add(node);
else
treeView1.Nodes[0].Nodes.Add(node);
}
}