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Web Part Assembly not found error

Imran Ali Bajwa 1 Reputation point
2020-07-29T19:44:58.717+00:00

Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies
I am trying to use npgsql in visual web part but i got this error even i have added assembly.But for testing purpose when i created a .net website it works fine i don't know what the problem for using this assembly in sharepoint web part.

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SharePoint
A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
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  1. Jerryzy 10,566 Reputation points
    2020-07-30T07:26:29.997+00:00

    Need to add the assembly in Package.package:

    14551-image-thumb-645.png

    14489-image-thumb-646.png

    Here is a blog specify the similiar question for your reference:

    Could Not Load File Or Assembly Or One Of Its Dependencies – Issue In SharePoint Farm Solution

  2. Imran Ali Bajwa 1 Reputation point
    2020-08-11T13:02:24.767+00:00

    Thank you my problem is Solved by installing 3. ... version of NPGSQl