@errMsg
@if (appState != null) { 
      SessionId: @appState.SessionId
      DateCreated: @appState.DateCreated
      DateExpires: @appState.DateExpires
      IPAddress: @appState.myIpAddress
} @code { [CascadingParameter] public CascadingAppState appState { get; set; } private string errMsg = string.Empty; }