Assign Existing group to Folder in document library CSOM C#

Question

I am working with SharePoint 2010.

I am trying to assign existing group to the folder in Document Library using Client Side Object Model C#.

I found this code in answer. This works but it ask for RoleType and I don't want to specify any RoleType.

I just want to assign the group permission to my folder in Document Library without specifying RoleType externally because I want to assign the existing permission of group to folder.

So I need help for these.

Answer 1

With the help of answer by @Ankit Kumar, I tried the code given here. But his code is for SharePoint 2013. And the question is for SharePoint 2010.

In SharePoint 2010 var GRoup1 = cpx.Web.SiteGroups.GetByName(groupName); will always gives error

Method "GetByName" does not exist.

So I modified the code to get the group name as shown below:

Group grp = null;
GroupCollection groupColl = clientContext.Web.SiteGroups;
clientContext.Load(groupColl,
    groups => groups.Include(
    group => group.Title,
    group => group.Id));
clientContext.ExecuteQuery();
foreach (Group siteGroup in groupColl)
{
    if (siteGroup.Title.Equals("TestGroup"))
    {
        grp = siteGroup;
        break;
    }
}

And after that using following code I was able to implement this on my SharePoint 2010 Environment.

var roletypes = clientContext.Web.RoleDefinitions.GetByType(RoleType.Contributor);
clientContext.ExecuteQuery();
listItemObject.BreakRoleInheritance(true, false);
RoleDefinitionBindingCollection collRoleDefinitionBinding = new RoleDefinitionBindingCollection(clientContext);
collRoleDefinitionBinding.Add(roletypes);
listItemObject.RoleAssignments.Add(grp, collRoleDefinitionBinding);
listItemObject.Update();
clientContext.ExecuteQuery();

Where listItemObject is your folder context. This code worked for me at my 2010 Environment.

Let me know if this solved your problem or any further help needed.

Answer 2

So basically you are not trying to break the inheritance. Did you try by keeping folder.BreakInheritance as false.or if you exclude this line :

collRoleDefinitionBinding.Add(clientContext.Web.RoleDefinitions.GetByType(RoleType.Reader)); //Set permission type

Also check this. here if you pass role types as null. Assign Unique permission to SharePoint 2013 List using Client Side code C#