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.
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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:
- Folder – It refers to newly created folder of type Folder class.
- 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.
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