2010-01-09 Marek Habersack <mhabersack@novell.com>

[mono.git] / mcs / class / System.Configuration / System.Configuration / ConfigurationElementCollection.cs

diff --git a/mcs/class/System.Configuration/System.Configuration/ConfigurationElementCollection.cs b/mcs/class/System.Configuration/System.Configuration/ConfigurationElementCollection.cs
index 856c279ffeb3909e105d0758349a63505afa8527..db98f4c4067d25ffe4617febe9cbdcfd4d3c0504 100644 (file)
--- a/mcs/class/System.Configuration/System.Configuration/ConfigurationElementCollection.cs
+++ b/mcs/class/System.Configuration/System.Configuration/ConfigurationElementCollection.cs
@@ -122,7 +122,13 @@ namespace System.Configuration
                }
 
                protected virtual bool ThrowOnDuplicate {
-                       get { return true; }
+                       get {
+                               if (CollectionType != ConfigurationElementCollectionType.AddRemoveClearMap &&
+                                   CollectionType != ConfigurationElementCollectionType.AddRemoveClearMapAlternate)
+                                       return false;
+                               
+                               return true;
+                       }
                }
                
                protected internal string AddElementName {