title: Compare title on item, if it exists I want to add a new file with eg. v2 at the end
body: <p>I'm checking if a list item exist in a folder:</p>
  
  <pre><code> SPFolder folder = site.RootWeb.GetFolder(folderUrl);
                      if (folder.ItemCount &gt; 0)
                      {
                          SPQuery query = new SPQuery();
                          query.Folder = folder;
                          SPListItemCollection listitem = list.GetItems(query); 
  
                          foreach (SPListItem item in listitem)
                          {
                             if (item.Title.Equals("ItemTitle")) {
                                // Add a new item with Title: ItemTitle_v2
                             }
                          }
                      }
  </code></pre>
  
  <p>If a item exist, I first check if the title is eg. "ItemTitle". If it is I add a new item with "_v2" at the end: "ItemTitle_v2". But I also want to check if a _v2,3,4,5,6 etc exists. How can I do this? </p>