How to Rename SharePoint Column Programmatically (PowerShell / C#)?

Here is how we can rename SharePoint list or site field or column programmatically with PowerShell and C# object model code: PowerShell script to Rename a SharePoint Field: Rename a SharePoint Field Programmatically (C#): PowerShell to change field display name in SharePoint site collection: Similarly, to rename a site column, use:

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