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Use UploadFile to set the upload files.

PnP has an implementation to upload files.

CheckId SPC029011
TypeName UseUploadFile
Severity Warning
Type Assembly

Standard SharePoint CSOM

var newFileInfo = new FileCreationInformation()
{
    ContentStream = stream,
    Url = fileName,
    Overwrite = overwriteIfExists
};

var file = folder.Files.Add(newFileInfo);
folder.Context.Load(file);
folder.Context.ExecuteQueryRetry();

Using PnP
folder.UploadFile(fileName, stream, overwriteIfExists);

To suppress this violation in managed code add the following attribute to the method which contains the instruction (available since SPCAF version v5.2). Learn more about SuppressMessage here.

// Important: Ensure to have #define CODE_ANALYSIS at the beginning of your .cs file
[SuppressMessage("Rencore.Analyzers.Assemblies.Rules.PnP.PnPBestPracticesGroup", "SPC029011:UseUploadFile", Justification = "Provide reason for suppression here")]
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