ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / IElement Interface / SetCustomProperty Method

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    SetCustomProperty Method (IElement)
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    Overload List
    OverloadDescription
    Sets a CustomProperty value for the element. This method must be called on the MCT. Use QueuedTask.Run.  
    Sets multiple CustomProperty values for the element. This method must be called on the MCT. Use QueuedTask.Run.  
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also