我收到有关“ForeignKeyConstraint FK_ModelTime_Model要求子键值（100）存在于父表中”的错误，那个子键值是数据键值吗？如何解决这些错误？
AvailabilityBLTest.cs文件
[TestMethod()]
//--------------------------------------------------------------------------
public void AddEffectiveQuarterTest()
{
AvailabilityBL target = new AvailabilityBL();
AvailabilityDS ds = new AvailabilityDS();
TestBusinessLogic.BusinessLogic_AvailabilityBLAccessor accessor = new TestBusinessLogic.BusinessLogic_AvailabilityBLAccessor(target);
// SETUP STANDARD TEST DATA
this.SetupTestData(ds, null);
int newModelID = -1;
// ADD A DUMMY MODEL ROW FOR FK CONSTRAINT ADHERENCE
this.SetupTestModel(newModelID, ds);
// ADD DUMMY MODEL TIME ROWS
DateTime dateKey = new DateTime(2007, 07, 01);
this.SetupTestModelTime(newModelID, -1, dateKey, ds);
dateKey = new DateTime(2007, 12, 30);
this.SetupTestModelTime(newModelID, -2, dateKey, ds);
// ADD DUMMY MODEL EVENT ROWS
this.SetupTestModelEvent(-1, ds);
this.SetupTestModelEvent(-1, ds);
this.SetupTestModelEvent(-1, ds);
this.SetupTestModelEvent(-2, ds);
this.SetupTestModelEvent(-2, ds);
accessor.mAvailabilityDS = ds;
dateKey = new DateTime(2007, 09, 30);
// CALL THE METHOD
int actual;
actual = target.AddEffectiveQuarter(dateKey);
// CHECK THE RESULTS - ModelTimeID (-1 and -2 inserted above)
int expected = -3;
Assert.AreEqual(expected, actual, "AddEffectiveQuarter did not insert the expected ModelTimeID.");
// CHECK THE RESULTS - Number of model events copied over (5 dummy rows + 3 copied to new quarter)
expected = 8;
actual = accessor.mAvailabilityDS.ModelEvent.Rows.Count;
Assert.AreEqual(expected, actual, "AddEffectiveQuarter did not insert the expected ModelTimeID.");
// CALL THE METHOD TO ADD IT AGAIN
string message = string.Empty;
try
{
actual = target.AddEffectiveQuarter(dateKey);
}
catch (Exception ex)
{
message = ex.Message;
}
finally
{
Assert.AreNotEqual(String.Empty, message, "AddEffectiveQuarter did not throw an exception when " +
"an attempt was made to add a quarter that is already in the model.");
}
}
...
`AvailabilityDS.ModelTimeRow ModelTime1 = ds.ModelTime.NewModelTimeRow();
ModelTime1.ModelTimeID = 101;
ModelTime1.ModelID = 100;
ModelTime1.DateKey = Convert.ToDateTime("2007-07-01 00:00:00.000");
ds.ModelTime.AddModelTimeRow(ModelTime1);//error occur here
ModelTime1 = ds.ModelTime.NewModelTimeRow();
ModelTime1.ModelTimeID = 102;
ModelTime1.ModelID = 101;
ModelTime1.DateKey = Convert.ToDateTime("2008-06-29 00:00:00.000");
ds.ModelTime.AddModelTimeRow(ModelTime1);
...`
AvailabilityDS.Designer.cs文件
namespace DataObject {
/// <summary>
///Represents a strongly typed in-memory cache of data.
///</summary>
[global::System.Serializable()]
[global::System.ComponentModel.DesignerCategoryAttribute("code")]
[global::System.ComponentModel.ToolboxItem(true)]
[global::System.Xml.Serialization.XmlSchemaProviderAttribute("GetTypedDataSetSchema")]
[global::System.Xml.Serialization.XmlRootAttribute("AvailabilityDS")]
[global::System.ComponentModel.Design.HelpKeywordAttribute("vs.data.DataSet")]
public partial class AvailabilityDS : global::System.Data.DataSet {
private EventDataTable tableEvent;
private EventTypeDataTable tableEventType;
private LaborCategoryDataTable tableLaborCategory;
private TimeDataTable tableTime;
private ModelTimeDataTable tableModelTime;
private ModelEventDataTable tableModelEvent;
private ModelDataTable tableModel;
private ResourceDataTable tableResource;
private MetricDataTable tableMetric;
private MetricDataDataTable tableMetricData;
private ModelTimeGroupDataTable tableModelTimeGroup;
private DurationTypeDataTable tableDurationType;
private ModelTimeForMetricTypeDataTable tableModelTimeForMetricType;
private ParameterInfoDataTable tableParameterInfo;
private global::System.Data.DataRelation relationFK_ModelTime_Model;
private global::System.Data.DataRelation relationFK_ModelEvent_ModelTimeGroup;
private global::System.Data.DataRelation relationFK_ModelEvent_ModelTime;
private global::System.Data.DataRelation relationFK_MetricData_Metric;
private global::System.Data.DataRelation relationFK_ModelTimeGroup_ModelTime;
private global::System.Data.SchemaSerializationMode _schemaSerializationMode = global::System.Data.SchemaSerializationMode.IncludeSchema;
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Design.TypedDataSetGenerator", "4.0.0.0")]
public AvailabilityDS() {
this.BeginInit();
this.InitClass();
global::System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler = new global::System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);
base.Tables.CollectionChanged += schemaChangedHandler;
base.Relations.CollectionChanged += schemaChangedHandler;
this.EndInit();
this.InitExpressions();
}
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Design.TypedDataSetGenerator", "4.0.0.0")]
protected AvailabilityDS(global::System.Runtime.Serialization.SerializationInfo info, global::System.Runtime.Serialization.StreamingContext context) :
base(info, context, false) {
if ((this.IsBinarySerialized(info, context) == true)) {
this.InitVars(false);
global::System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler1 = new global::System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);
this.Tables.CollectionChanged += schemaChangedHandler1;
this.Relations.CollectionChanged += schemaChangedHandler1;
if ((this.DetermineSchemaSerializationMode(info, context) == global::System.Data.SchemaSerializationMode.ExcludeSchema)) {
this.InitExpressions();
}
return;
}
string strSchema = ((string)(info.GetValue("XmlSchema", typeof(string))));
if ((this.DetermineSchemaSerializationMode(info, context) == global::System.Data.SchemaSerializationMode.IncludeSchema)) {
global::System.Data.DataSet ds = new global::System.Data.DataSet();
ds.ReadXmlSchema(new global::System.Xml.XmlTextReader(new global::System.IO.StringReader(strSchema)));
if ((ds.Tables["Event"] != null)) {
base.Tables.Add(new EventDataTable(ds.Tables["Event"]));
}
if ((ds.Tables["EventType"] != null)) {
base.Tables.Add(new EventTypeDataTable(ds.Tables["EventType"]));
}
if ((ds.Tables["LaborCategory"] != null)) {
base.Tables.Add(new LaborCategoryDataTable(ds.Tables["LaborCategory"]));
}
if ((ds.Tables["Time"] != null)) {
base.Tables.Add(new TimeDataTable(ds.Tables["Time"]));
}
if ((ds.Tables["ModelTime"] != null)) {
base.Tables.Add(new ModelTimeDataTable(ds.Tables["ModelTime"]));
}
if ((ds.Tables["ModelEvent"] != null)) {
base.Tables.Add(new ModelEventDataTable(ds.Tables["ModelEvent"]));
}
if ((ds.Tables["Model"] != null)) {
base.Tables.Add(new ModelDataTable(ds.Tables["Model"]));
}
if ((ds.Tables["Resource"] != null)) {
base.Tables.Add(new ResourceDataTable(ds.Tables["Resource"]));
}
if ((ds.Tables["Metric"] != null)) {
base.Tables.Add(new MetricDataTable(ds.Tables["Metric"]));
}
if ((ds.Tables["MetricData"] != null)) {
base.Tables.Add(new MetricDataDataTable(ds.Tables["MetricData"]));
}
if ((ds.Tables["ModelTimeGroup"] != null)) {
base.Tables.Add(new ModelTimeGroupDataTable(ds.Tables["ModelTimeGroup"]));
}
if ((ds.Tables["DurationType"] != null)) {
base.Tables.Add(new DurationTypeDataTable(ds.Tables["DurationType"]));
}
if ((ds.Tables["ModelTimeForMetricType"] != null)) {
base.Tables.Add(new ModelTimeForMetricTypeDataTable(ds.Tables["ModelTimeForMetricType"]));
}
if ((ds.Tables["ParameterInfo"] != null)) {
base.Tables.Add(new ParameterInfoDataTable(ds.Tables["ParameterInfo"]));
}
this.DataSetName = ds.DataSetName;
this.Prefix = ds.Prefix;
this.Namespace = ds.Namespace;
this.Locale = ds.Locale;
this.CaseSensitive = ds.CaseSensitive;
this.EnforceConstraints = ds.EnforceConstraints;
this.Merge(ds, false, global::System.Data.MissingSchemaAction.Add);
this.InitVars();
}
else {
this.ReadXmlSchema(new global::System.Xml.XmlTextReader(new global::System.IO.StringReader(strSchema)));
this.InitExpressions();
}
this.GetSerializationData(info, context);
global::System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler = new global::System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);
base.Tables.CollectionChanged += schemaChangedHandler;
this.Relations.CollectionChanged += schemaChangedHandler;
}
AvailabilityDS.cs文件
namespace DataObject {
partial class AvailabilityDS
{
partial class ModelDataTable
{
}
partial class EventTypeDataTable
{
}
partial class ModelTimeDataTable
{
}
partial class ProjectDataTable
{
}
partial class ModelTimeForMetricTypeDataTable
{
}
partial class ModelTimeGroupDataTable
{
}
}
}
答案 0 :(得分：0)
似乎您已将对数据集的强制约束设置为true。
尝试：
AvailabilityDS ds = new AvailabilityDS();
ds.EnforceConstraints = false;