Web Parts: Get Current User with Impersonation

Here is some code that I find myself using in all of my web parts.  You are also free to use it.  I simply reuse it in all of my web parts.

It returns “DOMAIN\\USERNAME”

private string GetUserAccount()
{
    // Normally used with all web parts
    // By: Bill Daugherty II
    // Date Modified: 08/15/2010

    string impersonate = string.Empty;
    try
    {
        if (Request.QueryString["impersonate"].Length > 0) impersonate = Request.QueryString["impersonate"];
        if (Request.QueryString["i"].Length > 0) impersonate = Request.QueryString["i"];
    }
    catch
    {

    }
    string staffMember = string.Empty;

    // Gets the staff SAM account
    SPSite site = SPContext.Current.Site;

    SPServiceContext context = SPServiceContext.GetContext(site);

    // Uses the profile manager that was set up in Central Admin
    UserProfileManager profileManager = new UserProfileManager(context);

    if (impersonate.Length == 0)
    {
        // staffMember = SPContext.Current.Web.CurrentUser.LoginName.ToString();
        staffMember = HttpContext.Current.Request.ServerVariables["AUTH_USER"];
    }
    else
    {
        staffMember = impersonate;
    }

    return staffMember;

}

If you find that you use this also, please just add a comment.

Bill