Upload file to nested file in SharePoint 2013 document library

Question

Hi,
I want to retrieve foders & subfolder from document library and bind it with a dropdownlist.I am able to bind all folder & subfolderto the dropdownlist as below image.
Now I want upload a file to folder selected in the drop down list.By using the below code I am able to add files in the root folder,but while submitting the file to sub folder it showing "Value does not fall in this range"
 if (item.Title == ddlFolderName.SelectedValue)
                                                if (item != null)
                                                   SPFolder selfold = lifolder.RootFolder.SubFolders[ddlFolderName.SelectedValue];
                                               SPFile fFile = selfold.Files.Add(System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName),
byt);
                                                    fFile.Item.Update();
                                                    fFile.Update();
                                                    lblMsg.Text = "File added";
}}Please help.Thank you

Answer 1

Hi Aditi,
For uploading a file into a nested folder you could consider the following approach:
ensure the target folder exist using the method provided below
upload a file using
SPFileCollection.Add method
How to ensure a nested Folder exist using SharePoint SSOM
internal static class SPFolderExtensions
/// <summary>
/// Ensure SPFolder
/// </summary>
/// <param name="web"></param>
/// <param name="listTitle"></param>
/// <param name="folderUrl"></param>
/// <returns></returns>
public static SPFolder EnsureFolder(this SPWeb web, string listTitle, string folderUrl)
if (string.IsNullOrEmpty(folderUrl))
throw new ArgumentNullException("folderUrl");
var list = web.Lists.TryGetList(listTitle);
return CreateFolderInternal(list, list.RootFolder, folderUrl);
private static SPFolder CreateFolderInternal(SPList list, SPFolder parentFolder, string folderUrl)
var folderNames = folderUrl.Split(new char[] {'/'}, StringSplitOptions.RemoveEmptyEntries);
var folderName = folderNames[0];
var curFolder =
parentFolder.SubFolders.Cast<SPFolder>().FirstOrDefault( f => System.String.Compare(f.Name, folderName, System.StringComparison.OrdinalIgnoreCase) == 0);
if (curFolder == null)
var folderItem = list.Items.Add(parentFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder,
folderName);
folderItem.SystemUpdate();
curFolder = folderItem.Folder;
if (folderNames.Length > 1)
var subFolderUrl = string.Join("/", folderNames, 1, folderNames.Length - 1);
return CreateFolderInternal(list, curFolder, subFolderUrl);
return curFolder;
How to create nested Folder using SharePoint SSOM
internal static class SPFolderExtensions
/// <summary>
/// Ensure SPFolder
/// </summary>
/// <param name="web"></param>
/// <param name="listTitle"></param>
/// <param name="folderUrl"></param>
/// <returns></returns>
public static SPFolder CreateFolder(this SPWeb web, string listTitle, string folderUrl)
if (string.IsNullOrEmpty(folderUrl))
throw new ArgumentNullException("folderUrl");
var list = web.Lists.TryGetList(listTitle);
return CreateFolderInternal(list, list.RootFolder, folderUrl);
private static SPFolder CreateFolderInternal(SPList list, SPFolder parentFolder, string folderUrl)
var folderNames = folderUrl.Split(new char[] {'/'}, StringSplitOptions.RemoveEmptyEntries);
var folderName = folderNames[0];
var curFolder =
parentFolder.SubFolders.Cast<SPFolder>()
.FirstOrDefault(
f =>
System.String.Compare(f.Name, folderName, System.StringComparison.OrdinalIgnoreCase) ==
0);
if (curFolder == null)
var folderItem = list.Items.Add(parentFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder,
folderName);
folderItem.SystemUpdate();
curFolder = folderItem.Folder;
if (folderNames.Length > 1)
var subFolderUrl = string.Join("/", folderNames, 1, folderNames.Length - 1);
return CreateFolderInternal(list, curFolder, subFolderUrl);
return curFolder;
Key points:
Ability to create a nested folder(s)
Existing folders will not be affected
The following example demonstrates how to ensure the following folder structure exist under
Documents library and upload a file into it:
Orders
|
A --
|
A1
Example:
var folder = web.CreateFolder("Documents", "Orders3/Orders A/Orders A1");
Example: how to upload a file into a nested folder
var targetFolder = web.EnsureFolder("Documents", "Orders3/A/A1");
var fileContent = System.IO.File.ReadAllBytes(fileName);
var fileUrl = Path.GetFileName(fileName);
targetFolder.Files.Add(fileUrl, fileContent);
Thanks & Regards
Indul Hassan
www.indulhassan.com