public class MyClass : ITransientDependency
{
  public IAbpSession AbpSession { get; set; }

  public MyClass()
  {
    AbpSession = NullAbpSession.Instance;
  }

  public void MyMethod()
  {
    var currentUserId = AbpSession.UserId;
    //...
  }
}

using Abp.MultiTenancy;

namespace Abp.Runtime.Session
{
  public interface IAbpSession
  {
    long"htmlcode">

using Abp.MultiTenancy;

namespace Abp.Runtime.Session
{
  /// <summary>
  /// Implements null object pattern for <see cref="IAbpSession"/>.
  /// </summary>
  public class NullAbpSession : IAbpSession
  {
    /// <summary>
    /// Singleton instance.
    /// </summary>
    public static NullAbpSession Instance { get { return SingletonInstance; } }
    private static readonly NullAbpSession SingletonInstance = new NullAbpSession();

    /// <inheritdoc/>
    public long"htmlcode">

using System;
using System.Linq;
using System.Security.Claims;
using System.Threading;
using Abp.Configuration.Startup;
using Abp.MultiTenancy;
using Abp.Runtime.Security;

namespace Abp.Runtime.Session
{
  /// <summary>
  /// Implements <see cref="IAbpSession"/> to get session properties from claims of <see cref="Thread.CurrentPrincipal"/>.
  /// </summary>
  public class ClaimsAbpSession : IAbpSession
  {
    private const int DefaultTenantId = 1;

    public virtual long"htmlcode">

using System;

namespace Abp.Runtime.Session
{
  /// <summary>
  /// Extension methods for <see cref="IAbpSession"/>.
  /// </summary>
  public static class AbpSessionExtensions
  {
    /// <summary>
    /// Gets current User's Id.
    /// Throws <see cref="AbpException"/> if <see cref="IAbpSession.UserId"/> is null.
    /// </summary>
    /// <param name="session">Session object.</param>
    /// <returns>Current User's Id.</returns>
    public static long GetUserId(this IAbpSession session)
    {
      if (!session.UserId.HasValue)
      {
        throw new AbpException("Session.UserId is null! Probably, user is not logged in.");
      }

      return session.UserId.Value;
    }

    /// <summary>
    /// Gets current Tenant's Id.
    /// Throws <see cref="AbpException"/> if <see cref="IAbpSession.TenantId"/> is null.
    /// </summary>
    /// <param name="session">Session object.</param>
    /// <returns>Current Tenant's Id.</returns>
    /// <exception cref="AbpException"></exception>
    public static int GetTenantId(this IAbpSession session)
    {
      if (!session.TenantId.HasValue)
      {
        throw new AbpException("Session.TenantId is null! Possible problems: No user logged in or current logged in user in a host user (TenantId is always null for host users).");
      }

      return session.TenantId.Value;
    }

    /// <summary>
    /// Creates <see cref="UserIdentifier"/> from given session.
    /// Returns null if <see cref="IAbpSession.UserId"/> is null.
    /// </summary>
    /// <param name="session">The session.</param>
    public static UserIdentifier ToUserIdentifier(this IAbpSession session)
    {
      return session.UserId == null
        ? null
        : new UserIdentifier(session.TenantId, session.GetUserId());
    }
  }
}






                                
                                

                                    ABP,Session,ASP.NET