How To Set The User As Owner For All The Groups In A SharePoint Online Site Using CSOM

Vijai Anand Ramalingam
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In this blog, you will see how to set the user as an owner for all the groups in a SharePoint Online site, using CSOM. Please refer my previous article Connect To SharePoint 2013 Online Using CSOM With Console Application

Code Snippet

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Security;
using System.Text;
using System.Threading.Tasks;
using Microsoft.SharePoint.Client;
namespace UpdateGroupOwners
{
class Program
{
static void Main(string[] args)
{
string userName = "[email protected]";
string siteURL = "https://c986.sharepoint.com/sites/Vijai";
string user = "[email protected]";
Console.WriteLine("Enter your password.");
SecureString password = GetPassword();
// ClienContext - Get the context for the SharePoint Online Site
using (var clientContext = new ClientContext(siteURL))
{
// SharePoint Online Credentials
clientContext.Credentials = new SharePointOnlineCredentials(userName, password);
// Get the SharePoint web
Web web = clientContext.Web;
// Get all the site groups
GroupCollection groupColl = web.SiteGroups;
// Ensure the user
User ownerUser = web.EnsureUser(user);
// Load the site group properties
clientContext.Load(groupColl);
// Execute the query to the server.
clientContext.ExecuteQuery();
// Loop through all the site groups
foreach (Group group in groupColl)
{
// Display the group title
Console.WriteLine("GroupName: " + group.Title + "-- GroupOwnerTitle: " + group.OwnerTitle);
// Update the owner
group.Owner = ownerUser;
group.Update();
clientContext.Load(group);
// Execute the query to the server.
clientContext.ExecuteQuery();
Console.WriteLine("UpdatedOwnerTitle: " + group.OwnerTitle);
}
Console.ReadLine();
}
}
private static SecureString GetPassword()
{
ConsoleKeyInfo info;
//Get the user's password as a SecureString
SecureString securePassword = new SecureString();
do
{
info = Console.ReadKey(true);
if (info.Key != ConsoleKey.Enter)
{
securePassword.AppendChar(info.KeyChar);
}
}
while (info.Key != ConsoleKey.Enter);
return securePassword;
}
}
}