Which windows account is used to upload files to SharePoint document library?

Question

I am using the following code

    WindowsIdentity wIdb4 = WindowsIdentity.GetCurrent();
    string name = wIdb4.Name;

in a workflow to show which user account is being used to upload a document. When i write the above mentioned string in a workflow history event, it always returns NETWORK SERVICE, even if i am logged in using the site collection administrator. Can anyone tell me why is this so?

Answer 1

Try using:

SPContext.Current.Web.CurrentUser.Name

EDIT:

I figured there may not be an associated SPContext in your workflow.

What does he following resolve to within your workflow?

workflowProperties.OriginatorUser

Answer 2

Workflow will always run as a service account (typically the IIS Application Pool account)