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keyref relationship in Typed Dataset causes System.Data.Con straintExceptio n


I have two tables in my database. PRODUCT and PRODUCT_GROUP. PRODUCT has a foreign key to PRODUCT_GROUP. I generated a typed dataset using VS.net and added a relationship between the two tables. When I call my get WebMethod for the PRODUCT table I get the System.Data.Con straintExceptio n exception. The get WebMethod for PRODUCT_GROUP works fine. When I remove the relationship the get WebMethod for PRODUCT works fine too. Both tables only have one row of data in them and the database is already enforcing the relationship. Also if I delete my one row of info in PRODUCT, the webservice works fine. What am I doing wrong. Please help

Here is the .xsd

<?xml version="1.0" standalone="yes " ?><xs:schema id="ProductTest DataSet" targetNamespace ="http://www.tempuri.org/ProductTestData Set.xsd
xmlns:mstns="ht tp://www.tempuri.org/ProductTestData Set.xsd" xmlns="http://www.tempuri.org/ProductTestData Set.xsd
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="u rn:schemas-microsoft-com:xml-msdata
attributeFormDe fault="qualifie d" elementFormDefa ult="qualified" ><xs:element name="ProductTe stDataSet" msdata:IsDataSe t="true"><xs:co mplexType><xs:c hoice maxOccurs="unbo unded"><xs:elem ent name="PRODUCT_G ROUP"><xs:compl exType><xs:sequ ence><xs:elemen t name="ID" msdata:ReadOnly ="true" msdata:AutoIncr ement="true" type="xs:int" /><xs:element name="NAME" type="xs:string " minOccurs="0" /></xs:sequence></xs:complexType> </xs:element><xs: element name="PRODUCT"> <xs:complexType ><xs:sequence>< xs:element name="ID" msdata:ReadOnly ="true" msdata:AutoIncr ement="true" type="xs:int" /><xs:element name="NAME" type="xs:string " minOccurs="0" /><xs:element name="PRODUCT_G ROUP_ID" type="xs:int" minOccurs="0" /></xs:sequence></xs:complexType> </xs:element></xs:choice></xs:complexType> <xs:unique name="Constrain t1" msdata:PrimaryK ey="true"><xs:s elector xpath=".//mstns:PRODUCT_G ROUP" /><xs:field xpath="mstns:ID " /></xs:unique><xs:u nique name="ProductSe lectCommand_Con straint1" msdata:Constrai ntName="Constra int1" msdata:PrimaryK ey="true"><xs:s elector xpath=".//mstns:PRODUCT" /><xs:field xpath="mstns:ID " /></xs:unique><xs:k eyref name="PRODUCT_G ROUPPRODUCT" refer="mstns:Co nstraint1" msdata:AcceptRe jectRule="None
msdata:DeleteRu le="None" msdata:UpdateRu le="None"><xs:s elector xpath=".//mstns:PRODUCT" /><xs:field xpath="mstns:PR ODUCT_GROUP_ID" /></xs:keyref></xs:element></xs:schema



ps. Here is the full error

System.Data.Con straintExceptio n: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints
at System.Data.Dat aSet.FailedEnab leConstraints(
at System.Data.Dat aSet.EnableCons traints(
at System.Data.Dat aSet.set_Enforc eConstraints(Bo olean value
at System.Data.Dat aTable.EndLoadD ata(
at System.Data.Com mon.DbDataAdapt er.FillFromRead er(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterCo lumn, Object parentChapterVa lue
at System.Data.Com mon.DbDataAdapt er.Fill(DataTab le dataTable, IDataReader dataReader
at System.Data.Com mon.DbDataAdapt er.FillFromComm and(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior
at System.Data.Com mon.DbDataAdapt er.Fill(DataTab le dataTable, IDbCommand command, CommandBehavior behavior
at System.Data.Com mon.DbDataAdapt er.Fill(DataTab le dataTable
at SimpleTestingPr oduct.Service1. getProduct() in c:\inetpub\wwwr oot\simpletesti ngproduct\servi ce1.asmx.cs:lin e 25

Nov 16 '05 #1
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