Page History

Summary

This solution example shows how to Export Historical data to a CSV file.

Image Added

Technical Information

This

solution uses the TrendChart

to visualize tag values that change over time

while the solution is running. Each

pen (

tag value)

is displayed in a different color

on the graph, which you can

customize, along with the legend position. All graph data is saved to a file with the default extension

of .csv.
In TWebBrowser, it is possible to view the content of the file, and in the settings, you can configure the URL of the exported file. Through this URL, the WebBrowser can access the path of the file and display its content.

Additionally, the file will be saved in the same path as your solution, but you can change that by going to Displays

/ MainPage

/ CodeBehind, and modifying the lines of code as in the example below:

@Tag.SelectedFileName = "";

@Tag.SelectedFileName = @"Path" + @Tag.OutputFilename;



bool ret = @Historian.Table.Table2.SaveToTextFile(@Tag.StartDateTime.LocalDateTime, @Tag.EndDateTime.LocalDateTime, @Tag.SelectedFileName, ',', true, true, true, 6, null);

Note that, in this code example, 'ret' stores the return of the SaveToTextFile method, indicating success (true) or failure (false).

References Information

→ Learn more at at Historian (Time-Series Data).

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