public void AddItem(string fileName)
{
string folderName = ResourceService.GetString("ICSharpCode.SharpDevelop.Commands.ProjectBrowser.SolutionItemsNodeText");
SolutionFolderNode node = null;
foreach (TreeNode n in Nodes)
{
node = n as SolutionFolderNode;
if (node != null && node.Folder.Name == folderName)
{
break;
}
node = null;
}
if (node == null)
{
ISolutionFolder newSolutionFolder = solution.CreateFolder(folderName);
solution.Save();
node = new SolutionFolderNode(newSolutionFolder);
node.InsertSorted(this);
}
node.AddItem(fileName);
}