X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mcs%2Fclass%2FSystem.XML%2FSystem.Xml%2FXmlSignificantWhitespace.cs;h=1df1a7f512ba18c87115db9ddf7c11e01fb9f5a8;hb=2a6da5d6f1e6d02f0e3595b3a02af6cacea2772c;hp=8999730699947a6a27228c80855886b70c59aa96;hpb=420c7f042a15146588f183a96efed522dda17923;p=mono.git

diff --git a/mcs/class/System.XML/System.Xml/XmlSignificantWhitespace.cs b/mcs/class/System.XML/System.Xml/XmlSignificantWhitespace.cs
index 89997306999..1df1a7f512b 100644
--- a/mcs/class/System.XML/System.Xml/XmlSignificantWhitespace.cs
+++ b/mcs/class/System.XML/System.Xml/XmlSignificantWhitespace.cs
@@ -8,6 +8,7 @@
 //
 
 using System;
+using System.Xml.XPath;
 
 namespace System.Xml
 {
@@ -32,9 +33,19 @@ namespace System.Xml
 			get { return XmlNodeType.SignificantWhitespace; }
 		}
 
+		internal override XPathNodeType XPathNodeType {
+			get {
+				return XPathNodeType.SignificantWhitespace;
+			}
+		}
+		
 		public override string Value {
 			get { return Data; }
-			set {}
+			set {
+				if (IsValidWhitespaceChar (value) == false)
+					throw new ArgumentException ("Invalid whitespace characters.");
+				base.Data = value;
+			}
 		}
 
 		// Methods
@@ -49,5 +60,13 @@ namespace System.Xml
 		{
 			w.WriteWhitespace (Data);
 		}
+
+		private bool IsValidWhitespaceChar (string text)
+		{
+			foreach (char c in text)
+				if ((c != ' ') && (c != '\r') && (c != '\n') && (c != '\t'))
+					return false;
+			return true;
+		}
 	}
 }