2008-03-31 Marek Habersack <mhabersack@novell.com>

[mono.git] / mcs / class / System.Web / System.Web / HttpCacheVaryByParams.cs

diff --git a/mcs/class/System.Web/System.Web/HttpCacheVaryByParams.cs b/mcs/class/System.Web/System.Web/HttpCacheVaryByParams.cs
index e03910d614c117bc04916a648bbf61381a498ef0..0eabbed64cbc8d0ef6dff083cea2f3147e49f6f0 100644 (file)
--- a/mcs/class/System.Web/System.Web/HttpCacheVaryByParams.cs
+++ b/mcs/class/System.Web/System.Web/HttpCacheVaryByParams.cs
@@ -44,8 +44,12 @@ namespace System.Web {
                internal HttpCacheVaryByParams ()
                {
                        /* the parameter names are meant to be case insensitive */
+#if NET_2_0
+                       parms = new Hashtable (StringComparer.InvariantCultureIgnoreCase);
+#else
                        parms = new Hashtable(CaseInsensitiveHashCodeProvider.Default,
                                              CaseInsensitiveComparer.Default);
+#endif
                }
 
                internal string[] GetParamNames ()
@@ -68,6 +72,9 @@ namespace System.Web {
                                builder.Append ("; ");
                        }
 
+                       if (builder.Length == 0)
+                               return null;
+
                        return new UnknownResponseHeader ("Vary", builder.ToString());
                }