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Home/ Questions/Q 4045014
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Editorial Team
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Editorial Team
Asked: May 20, 20262026-05-20T13:21:53+00:00 2026-05-20T13:21:53+00:00

Is it possible to use a file as custom SharePoint Webpart property? I would

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Is it possible to use a file as custom SharePoint Webpart property? I would like to provide a file upload box in the WebPart editing menu. (“Modify This Web Part” -> “Custom Properties”).

According to the documentation (MSDN – Creating a Web Part with Custom Properties) by default only bool, int, string, enum and datetime types are supported.

Is there any way to allow the user to upload a file instead?

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  1. Editorial Team
    Editorial Team
    2026-05-20T13:21:54+00:00Added an answer on May 20, 2026 at 1:21 pm

    You could create a custom EditorPart (or Toolpart) that allows the user to upload a file. I like Bil Simser’s blog because he helps mimic out of the box SharePoint styles:
    http://weblogs.asp.net/bsimser/archive/2009/08/12/spreading-some-sharepoint-love-to-editorpart.aspx

    Here is another answer of someone who also needed a Toolpart and the example on MSDN.

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