[Mono-bugs] [Bug 80075][Nor] Changed - bad performance problem with access of datarow column

[bugzilla-daemon at bugzilla.ximian.com]

Please do not reply to this email- if you want to comment on the bug, go to the
URL shown below and enter your comments there.

Changed by informatique.internet at fiducial.fr.

http://bugzilla.ximian.com/show_bug.cgi?id=80075

--- shadow/80075	2006-11-28 11:13:58.000000000 -0500
+++ shadow/80075.tmp.14459	2006-11-28 11:54:35.000000000 -0500
@@ -1,14 +1,14 @@
 Bug#: 80075
 Product: Mono: Class Libraries
 Version: 1.2
-OS: 
+OS: unknown
 OS Details: 
 Status: NEW   
 Resolution: 
-Severity: 
+Severity: Unknown
 Priority: Normal
 Component: Sys.Data
 AssignedTo: mono-bugs at ximian.com                            
 ReportedBy: informatique.internet at fiducial.fr               
 QAContact: mono-bugs at ximian.com
 TargetMilestone: ---
@@ -86,6 +86,31 @@
 
 
 How often does this happen? 
 always
 
 Additional Information:
+
+------- Additional Comments From informatique.internet at fiducial.fr  2006-11-28 11:54 -------
+The incriminated method is in DataColumnCollection :
+
+		private int IndexOf (string name, bool error)
+		{
+			int count = 0, match = -1;
+			for (int i = 0; i < List.Count; i++)
+			{
+				String name2 = ((DataColumn) List[i]).ColumnName;
+				if (String.Compare (name, name2, true) == 0)
+				{
+					if (String.Compare (name, name2, false) == 0)
+						return i;
+					match = i;
+					count++;					
+				}
+			}
+			if (count == 1)
+				return match;
+			if (count > 1 && error)
+				throw new ArgumentException ("There is no match for the name in
+the same case and there are multiple matches in different case.");
+			return -1;
+		}