[Expand]General Information
[Collapse]WinForms Controls
 [Expand]What's Installed
 [Expand]Build an Application
 [Collapse]Controls and Libraries
  [Expand]Forms and User Controls
  [Expand]Messages, Notifications and Dialogs
  [Expand]Editors and Simple Controls
  [Expand]Ribbon, Bars and Menu
  [Expand]Application UI Manager
  [Expand]Docking Library
  [Expand]Data Grid
  [Expand]Vertical Grid
  [Expand]Property Grid
  [Expand]Pivot Grid
  [Expand]Tree List
  [Expand]Chart Control
  [Expand]Map Control
   [Expand]Product Information
    Product Structure
    Getting Started
   [Expand]Spreadsheet Document
    Supported Formats
   [Expand]Cell Basics
   [Collapse]Spreadsheet Formulas
      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
     Array Formulas
     Formula Engine
     Formula AutoComplete
    Defined Names
    Data Binding
    Data Validation
   [Expand]Data Presentation
    Data Grouping
   [Expand]Pivot Table Overview
   [Expand]Charting Overview
   [Expand]Mail Merge Overview
    Find and Replace
   [Expand]Visual Elements
  [Expand]Rich Text Editor
  [Expand]Spell Checker
  [Expand]Form Layout Managers
  [Expand]Navigation Controls
  [Expand]PDF Viewer
  [Expand]TreeMap Control
 [Expand]Common Features
  Get More Help
 [Expand]API Reference
[Expand]ASP.NET Controls and MVC Extensions
[Expand]ASP.NET Bootstrap Controls
[Expand]ASP.NET Core Bootstrap Controls
[Expand]WPF Controls
[Expand]Xamarin Controls
[Expand]Windows 10 App Controls
[Expand]Office File API
[Expand]Report and Dashboard Server
[Expand]eXpressApp Framework
[Expand]CodeRush Classic
[Expand]Cross-Platform Core Libraries
[Expand]Tools and Utilities
 End-User Documentation

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 RealTimeDataOptions.ThrottleInterval property. To update the result manually, set the RealTimeDataOptions.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.



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.

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=E5204.

Is this topic helpful?​​​​​​​