How to delete a Sandbox solution from Solution Gallery using CSOM in Office 365?

In this blog, I will talk about removing the sandbox solution uploaded in Solution Gallery through CSOM Code. Suppose if you have a need to delete the sandbox solution if it already exists and add the updated WSP solution. Here is the code to achieve it.

// find the solution in the gallery and delete it

var solutionGallery = SiteContext.Web.Lists.GetByTitle(“Solution Gallery”);

var files = solutionGallery.RootFolder.Files;

//Load the entire solution Gallery.

SiteContext.Load(files, fs => fs.Where(f => f.Name == “MYWSP.wsp”));
SiteContext.ExecuteQuery();

var file = files.FirstOrDefault();

if (file != null)
{

file.DeleteObject();
SiteContext.ExecuteQuery();

}

Hope that helps! Happy SharePointing folks!!

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