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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=79233 --- shadow/79233 2006-08-31 12:45:54.000000000 -0400 +++ shadow/79233.tmp.2352 2006-08-31 12:45:54.000000000 -0400 @@ -0,0 +1,79 @@ +Bug#: 79233 +Product: Mono: Class Libraries +Version: 1.1 +OS: +OS Details: +Status: NEW +Resolution: +Severity: +Priority: Normal +Component: Sys.Data +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: DuplicateNameException when two relations for different DataTables in DataSet are defined + +When relations are defined for different DataTables in a DataSet, Mono +determines the name for each individual DataRelationCollection, instead +of calculating it on the DataSet level. This leads to a +DuplicateNameException. + +To reproduce, compile and run the following code snippet: + +using System; +using System.Data; + +public class Test +{ + static void Main () + { + DataSet ds = new DataSet (); + + DataTable dtChild = new DataTable ("Child"); + dtChild.Columns.Add ("ParentId", typeof (int)); + ds.Tables.Add (dtChild); + + DataTable dtParent = new DataTable ("Parent"); + dtParent.Columns.Add ("ParentId", typeof (int)); + ds.Tables.Add (dtParent); + + dtParent.ChildRelations.Add (dtParent.Columns [0], + dtChild.Columns [0]); + Console.WriteLine (dtParent.ChildRelations [0].RelationName); + dtChild.ChildRelations.Add (dtChild.Columns [0], + dtParent.Columns [0]); + Console.WriteLine (dtChild.ChildRelations [0].RelationName); + } +} + +Expected result: + +Relation1 +Relation2 + +Actual result: + +Relation1 + +Unhandled Exception: System.Data.DuplicateNameException: A DataRelation +named 'Relation1' already belongs to this DataSet. + at System.Data.DataRelationCollection.AddCore (System.Data.DataRelation +relation) [0x00000] + at System.Data.DataRelationCollection+DataSetRelationCollection.AddCore +(System.Data.DataRelation relation) [0x00000] + at System.Data.DataRelationCollection.Add (System.Data.DataRelation +relation) [0x00000] + at +System.Data.DataRelationCollection+DataTableRelationCollection.AddCore +(System.Data.DataRelation relation) [0x00000] + at System.Data.DataRelationCollection.Add (System.Data.DataRelation +relation) [0x00000] + at System.Data.DataRelationCollection.Add (System.Data.DataColumn +parentColumn, System.Data.DataColumn childColumn) [0x00000] + at Test.Main () [0x00000] + +Note: I'll add a unit test for this bug to DataRelationTest2.cs. Please +enable this test once the bug is fixed. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
