How to retrieve current user in SharePoint 2013 Online using CSOM

In this post, we’ll see how we can retrieve the current user in a SharePoint 2013 online site using client side object model (CSOM). We’ll  be using a console application for the purpose of this demonstration.

Open Visual Studio 2013

File –> New Project –> C# –> Console application

Add  reference to the following assemblies.

Microsoft.SharePoint.Client.dll

Microsoft.SharePoint.Client.runtime.dll

Import the following namespaces at the top of Program.cs

using  Microsoft.SharePoint.Client;
using System.Security;

namespace Retrievecurrentuser
{
    class Program
    {
        static void Main(string[] args)
        {

            using (ClientContext oClientContext = new ClientContext(@"https://yoursite.sharepoint.com"))
            {

                //Assign User Id for your SharePoint Online tenant     
                string UserName = "userid@yoursite.onmicrosoft.com";

                //Assign password for your SharePoint online tenant
                string Password = "password";

                //Create a SecureString object from password string, needed for SharePointOnlineCredentials class
                SecureString SecurePassword = GetSecureString(Password);
                oClientContext.Credentials = new SharePointOnlineCredentials(UserName, SecurePassword);


                //load the properties of web object
                Web oWeb = oClientContext.Web;
                oClientContext.Load(oWeb);
                oClientContext.ExecuteQuery();

                //retrieve the site name
                string SiteName = oWeb.Title;

                //retrieve the current user
                oClientContext.Load(oWeb.CurrentUser);
                oClientContext.ExecuteQuery();

            Console.WriteLine("Login Name"+ oClientContext.Web.CurrentUser.LoginName);
                Console.WriteLine("Is Admin"+ oClientContext.Web.CurrentUser.IsSiteAdmin);
                Console.WriteLine("Email"+ oClientContext.Web.CurrentUser.Email);
                
                Console.ReadLine();


            }
        }

        private static SecureString GetSecureString(String Password)
        {
            SecureString oSecurePassword = new SecureString();

            foreach (Char c in Password.ToCharArray())
            {
                oSecurePassword.AppendChar(c);

            }
            return oSecurePassword;
        }

    }
}

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, “Courier New”, courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

Then create a clientcontext in the program.cs, load the web object (execute query) and then load the current user based on the web object.

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, “Courier New”, courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

Now we’ll be able to fetch the user properties like the below.

image

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