// This function takes a registry key and recursively enumerates its values
// and subkeys while adding each to the parent TreeNode for listing
// in the TreeView control.
private void PopulateTreeFromReg(string rootKey, string keyName, ref TreeNode parent)
{
// make sure rootKey and keyName aren't empty
if (!rootKey.Equals(""))
{
// if keyName is not empty create new node for this key
// otherwise its the root key so just use parent
TreeNode newNode;
bool Named; // true if it's the root node
if (!keyName.Equals(""))
{
newNode = new TreeNode(keyName);
Named = false;
}
else
{
// current key is the root node, so use parent
// (the passed in root node) as the current node
newNode = parent;
Named = true;
}
// list the values first
string Values = Registry.EnumValues(Registry.RootKey.LocalMachine, rootKey, false);
// make sure Values is not null
if (Values != null)
{
// split the coma-delimited return string up into the individual values
string[] ValList = Values.Split(',');
// iterate through each value and add to the tree
foreach (string curVal in ValList)
{
if (!curVal.Equals(""))
{
TreeNode newVal = new TreeNode(curVal);
newNode.Nodes.Add(newVal);
}
}
}
// now list the keys
string Keys = Registry.EnumValues(Registry.RootKey.LocalMachine, rootKey, true);
if (Keys != null)
{
// split up the coma-delimited key list
string[] KeyList = Keys.Split(',');
// iterate through each subkey and add to the tree
foreach (string curKey in KeyList)
{
if (!curKey.Equals(""))
{
string subKey = rootKey + "\\" + curKey;
PopulateTreeFromReg(subKey, curKey, ref newNode);
}
}
}
// now add the node to the parent
if (!Named)
{
parent.Nodes.Add(newNode);
}
}
}
