How to add subfolder in SharePoint library using CSOM?


Being a SharePoint professional, sometimes we need to create folders in SharePoint library. You may be thinking that it is not such a complex thing that you need to refer any article for. But as a developer you are not always expected to create folder in SharePoint library using browser. You need automatic code logic to create a folder. It may use SharePoint Server Side Object Model or Client Side Object Model (CSOM). In this article, you will see how to add subfolder in SharePoint library using CSOM.

I am providing below a C# function which adds folder in SharePoint library using SharePoint CSOM Client Side Object Model. Let’s look at below:

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Input Parameters

context – You need to pass SharePoint client context of type ClientContext class. It will be used to perform operations on SharePoint.

listId – You also need to pass SharePoint library Id in string format e.g. “{9E2A3DBB-5645-42BC-B24A-D62AAB23AB03}”. It will be used to get instance of SharePoint library in the code.

subFolderName – Provide the name of folder, you want to get created in string format e.g. “My Documents Folder”.

Output

This function returns either of two below values:

  1. Folder – It refers to newly created folder of type Folder class.
  2. Null – if SharePoint library id is invalid or SharePoint context is invalid.

Code

private Folder CreateSignedDocumentsFolder(ClientContext context, string listId, string subFolderName)

{

Folder output = null;

if (!string.IsNullOrEmpty(listId))

{

Guid guid = new Guid(listId);

List list = context.Web.Lists.GetById(guid);

 

Folder rootFolder = list.RootFolder;

context.Load(rootFolder.Folders);

context.Load(rootFolder, rf => rf.ServerRelativeUrl);

context.ExecuteQuery();

string url = rootFolder.ServerRelativeUrl + “/” + subFolderName;

var folder = context.Web.GetFolderByServerRelativeUrl(url);

context.Load(folder, f => f.Exists);

try

{

context.ExecuteQuery();

if (folder.Exists)

{

context.Load(folder, sf => sf.ServerRelativeUrl);

context.ExecuteQuery();

output = folder;

return output;

}

Folder subFolder = rootFolder.Folders.Add(subFolderName);

rootFolder.Update();

context.Load(subFolder, sf => sf.ServerRelativeUrl);

context.ExecuteQuery();

output = subFolder;

return output;

}

catch (ServerUnauthorizedAccessException uae)

{

throw;

}

catch (Exception ex)

{

Folder subFolder = rootFolder.Folders.Add(subFolderName);

rootFolder.Update();

context.Load(subFolder, sf => sf.ServerRelativeUrl);

context.ExecuteQuery();

output = subFolder;

return output;

}

}

else

{

return output;

}

}

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Conclusion

Hope above code has helped you in your programming. In this post, you have seen how to add subfolder in SharePoint library using CSOM.


Hope you enjoyed reading it.

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About Author

Satyendra Mishra

Project Management Professional (PMP) and Microsoft certified, motivated, energetic and accomplished Project Manager / Architect with 15+ years of work experience in Management, Architecture, Analytics, Development and Maintenance. I have been fortunate to be a part of over 25+ .Net / SharePoint projects delivery with various companies across different industry sectors. This has provided me a valuable insight and experience especially in successful implementation of SharePoint based solutions.

My experience in Web application implementation includes technology strategy and road-map definition, business and technical requirements identification, governance, platform architecture, solution design, configuration, development, quality assurance, training, post-production support, team lead and overall project delivery along with project management.

Satyendra Mishra holds a B.Tech. in Computer Science & Engineering and PG Diploma in Advance Computing from Center for Development and Advance Computing, Pune, India. He is also a certified Project Management Professional (PMP).

I love to share Project Management Tips and Tricks by writing Blogs in the Project Management India Community. I have written around 300+ articles in the Project Management, .Net, SharePoint and related client side technologies.

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