private void DeleteItem()

{

	string message = "Do you want to delete this item?";

	string caption = "Delete";

	MessageBoxButtons buttons = MessageBoxButtons.YesNo;

	DialogResult result = MessageBox.Show(this, message, caption, buttons, MessageBoxIcon.Question);

	if(result == DialogResult.Yes)

	{

		TreeNode node = treeViewMain.SelectedNode;

		treeView.Nodes.Remove(node);

	}

}