Check if a folder exists in a SharePoint List

Below code is to check if the folder already exists in a SharePoint List.

 private void CreateFolderInList(string folderName, string listName, SPListCollection listCollection)

        {

            try

            {

                //Creating folder in "Sites" Lists

                SPList list = listCollection[listName];

                //Check if the Folder is already available in the list

                SPQuery query = new SPQuery();

                query.Query = "<Where><And><Eq><FieldRef Name='Title'/><Value Type='Text'>" + folderName + "</Value></Eq><Eq><FieldRef Name=’FSObjType’/><Value Type=’Lookup’>1</Value></Eq></And></Where>";

  query.ViewAttributes = "Scope=\"RecursiveAll\""

                //Retrieve the items based on Query

                SPListItemCollection items = list.GetItems(query);

  //Item count is "0" if the folder does not exist

                if (items.Count == 0)

                {

                    folderItem = list.Items.Add(list.RootFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder);

                    folderItem["Title"] = folderName;

                    folderItem.Update();

                    //return folderItem.Url;

                }

            }

            catch (Exception ex)

            {

               

            }

}