protected virtual bool ShouldRedirectWithoutUnnecessaryParams(out string destinationUrl)
{
destinationUrl = null;
string uriString = this.Context.Request.Url.OriginalString;
string text = this.Context.Request.Headers["msExchProxyUri"];
if (!string.IsNullOrEmpty(text))
{
uriString = text;
}
Uri uri = new Uri(uriString);
NameValueCollection coll = HttpUtility.ParseQueryString(uri.Query);
string str = null;
if (DefaultPageBase.QueryHasUnnecessaryParameters(coll, out str))
{
string text2 = uri.AbsolutePath;
if (text2.ToLowerInvariant().EndsWith("default.aspx"))
{
text2 = text2.Substring(0, text2.Length - "default.aspx".Length);
}
text2 += str;
destinationUrl = text2;
return(true);
}
return(false);
}