SPUser Class

Represents a user in Microsoft Windows SharePoint Services.

Inheritance Hierarchy

System.Object
  Microsoft.SharePoint.SPMember
    Microsoft.SharePoint.SPPrincipal
      Microsoft.SharePoint.SPUser

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel := True)> _
Public NotInheritable Class SPUser _
    Inherits SPPrincipal

Dim instance As SPUser

[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
public sealed class SPUser : SPPrincipal

Remarks

Use the AllUsers or SiteUsers property of the SPWeb class, the GetAllAuthenticatedUsers method of the SPUtility class, or the GetUniqueUsers method of the SPAlertCollection class, to return the following:

• All the users of a site

• All the users in the site collection

• All authenticated users of a site

• A list of users for a collection of alerts.

Otherwise, use the Users property of the SPGroup, SPRole, or SPWeb class to return the users in a group, role definition, or site.

Use an indexer to return a single user from the collection. For example, if the collection is assigned to a variable named collUsers, use collUsers[index] in C#, or collUsers(index) in Visual Basic, where index is either the index number of the user in the collection or the user name of the user.

Every user has a unique member ID (ID property), has the permissions associated with that membership, and can be represented by an SPMember object. The following example assigns a user to an SPMember object, given a specified SharePoint Web site:

Dim oWebsite As SPWeb = SPContext.Current.Web
Dim oMember As SPMember = oWebsite.AllUsers("Domain\\User_Alias")

SPWeb oWebsite = SPContext.Current.Web;
SPMember oMember = oWebsite.AllUsers["Domain\\User_Alias"];

For general information about users and security, see Security, Users, and Groups.

Examples

The following code example modifies the e-mail address, display name, and notes for a specified user object.

Dim siteCollection As SPSite = SPControl.GetContextSite(Context)
Dim site As SPWeb = siteCollection.AllWebs("Site_Name")
Dim user As SPUser = site.AllUsers("User_Name")

user.Email = "E-mail_Address"
user.Name = "Display_Name"
user.Notes = "User_Notes"

user.Update()

SPSite oSiteCollection = SPContext.Current.Site;
using (SPWeb oWebsite = oSiteCollection.AllWebs["Website_Name"])
{
    SPUser oUser = oWebsite.AllUsers["User_Name"];

    oUser.Email = " E-mail_Address";
    oUser.Name = " Display_Name";
    oUser.Notes = " User_Notes";

    oUser.Update();
}

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

SPUser Members

Microsoft.SharePoint Namespace