ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Desktop.Core Namespace / CustomProjectItemBase Class / OnAddToProject Method

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    OnAddToProject Method (CustomProjectItemBase)
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    Callback when your custom item is being added to the project
    Syntax
    public virtual void OnAddToProject()
    Public Overridable Sub OnAddToProject() 
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also