[Expand]General Information
[Expand]WinForms Controls
[Expand]ASP.NET Controls and MVC Extensions
[Expand]ASP.NET Bootstrap Controls
[Expand]ASP.NET Core Bootstrap Controls
[Collapse]WPF Controls
  Prerequisites
 [Expand]What's Installed
 [Expand]Common Concepts
 [Expand]MVVM Framework
 [Collapse]Controls and Libraries
   Reporting
  [Expand]Data Grid
  [Expand]Ribbon, Bars and Menu
  [Expand]Charts Suite
  [Expand]Pivot Grid
  [Expand]Scheduler
  [Collapse]Spreadsheet
    Product Structure
   [Expand]Getting Started
   [Expand]Spreadsheet Document
    Supported Formats
   [Expand]Cell Basics
   [Collapse]Formulas
    [Collapse]Functions
      Mathematical Functions
      Statistical Functions
      Date and Time Functions
      Text Functions
      Financial Functions
      Logical Functions
      Lookup and Reference Functions
      Engineering Functions
      Information Functions
      Compatibility Functions
      Database Functions
      Web Functions
      User-Defined Functions (UDF)
      Real Time Data (RTD) function
     Operators
     Array Formulas
     Calculation
     Formula Engine
     Formula AutoComplete
    Defined Names
    Data Binding
    Data Validation
   [Expand]Data Presentation
   [Expand]Pivot Table Overview
   [Expand]Charting Overview
    Shapes
    Printing
    Protection
    Find and Replace
   [Expand]Mail Merge
   [Expand]Visual Elements
    Services
    Themes and Templates
   [Expand]Shortcuts
   [Expand]Examples
  [Expand]Rich Text Editor
  [Expand]Tree List
  [Expand]Gauge Controls
  [Expand]Map Control
  [Expand]Layout Management
  [Expand]Windows Modern UI
  [Expand]Printing-Exporting
  [Expand]Data Editors
  [Expand]Navigation Controls
  [Expand]Spell Checker
  [Expand]Property Grid
  [Expand]PDF Viewer
  [Expand]TreeMap Control
  [Expand]Gantt Control
  [Expand]Diagram Control
  [Expand]Windows and Utility Controls
   Dialogs, Notifications and Panels
  [Expand]Scheduler (legacy)
 [Expand]Scaffolding Wizard
 [Expand]Localization
  Redistribution and Deployment
  Get More Help
 [Expand]API Reference
[Expand]Xamarin Controls
[Expand]Windows 10 App Controls
[Expand]Office File API
[Expand]Reporting
[Expand]Report and Dashboard Server
[Expand]Dashboard
[Expand]eXpressApp Framework
[Expand]eXpress Persistent Objects
[Expand]CodeRush
[Expand]CodeRush Classic
[Expand]Cross-Platform Core Libraries
[Expand]Tools and Utilities
 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

Real Time Data (RTD) function

The Real-Time Data (RTD) worksheet function enables you to retrieve data in real time from a COM Automation server. For more information on creating a COM Automation server that can be used as a Real-Time Data server for a spreadsheet, refer to the How to create a RealTimeData server for Excel article in MSDN.

By default, the function result is updated by timer at the interval specified by the SpreadsheetRealTimeDataOptions.ThrottleInterval property. To update the result manually, set the SpreadsheetRealTimeDataOptions.RefreshMode property to the RealTimeDataRefreshMode.Manual value and call the RealTimeData.RefreshData method when required.

Expanded Syntax

RTD(RealTimeServerProgID, ServerName, Topic1, [Topic2], ...)

The following table describes the arguments in the above syntax.

Argument Description
RealTimeServerProgID A string that represents the Program ID of the RTD server installed on the local system.
ServerName A string that represents the name of the server on which the RTD server is run. If the RTD server is run locally, the ServerName is an empty string ("") or can be omitted.
Topic1, [Topic2], ... Strings that determine the data being retrieved. At least one topic is required.

Is this topic helpful?​​​​​​​