我有一个Table，其中包含一组带有整数的数据，用于标记在另一个dataset中查找其字符串描述的位置。我试过用：
=LOOKUP(
CINT(Fields!LTC_Leak.Value),
CINT(Fields!LTC_Leak.Value),
Fields!LTC_LeakDesc.Value,
"LeakCheckTypes"
)
这应该使用详细信息LTC_Leak中的整数字段dataset，该表也是作用域的，并在"LeakCheckTypes" dataset中查找该行的描述，但我保留得到错误：
The Value expression for the text box 'LeakCheckType' refers to the field 'LTC_LeakDesc'. Report item expressions can only refer to fields within the current dataset scope or, if inside an aggregate, the specified dataset scope.
我已经使用调试器进行检查，所有datasets都存在，命名正确，并且拥有所有正确的数据。任何人都知道我在这里做错了什么？
从我使用的datasetmodel中添加xml（缩写为受影响的表）
<xs:element name="Details" msprop:Generator_TableClassName="DetailsDataTable" msprop:Generator_TableVarName="tableDetails" msprop:Generator_RowChangedName="DetailsRowChanged" msprop:Generator_TablePropName="Details" msprop:Generator_RowDeletingName="DetailsRowDeleting" msprop:Generator_RowChangingName="DetailsRowChanging" msprop:Generator_RowEvHandlerName="DetailsRowChangeEventHandler" msprop:Generator_RowDeletedName="DetailsRowDeleted" msprop:Generator_RowClassName="DetailsRow" msprop:Generator_UserTableName="Details" msprop:Generator_RowEvArgName="DetailsRowChangeEvent">
<xs:complexType>
<xs:sequence>
<xs:element name="Row" msprop:Generator_ColumnVarNameInTable="columnRow" msprop:Generator_ColumnPropNameInRow="Row" msprop:Generator_ColumnPropNameInTable="RowColumn" msprop:Generator_UserColumnName="Row" type="xs:string" minOccurs="0" />
<xs:element name="OPRID" msprop:Generator_ColumnVarNameInTable="columnOPRID" msprop:Generator_ColumnPropNameInRow="OPRID" msprop:Generator_ColumnPropNameInTable="OPRIDColumn" msprop:Generator_UserColumnName="OPRID" type="xs:string" minOccurs="0" />
<xs:element name="NAME" msprop:Generator_ColumnVarNameInTable="columnNAME" msprop:Generator_ColumnPropNameInRow="NAME" msprop:Generator_ColumnPropNameInTable="NAMEColumn" msprop:Generator_UserColumnName="NAME" type="xs:string" minOccurs="0" />
<xs:element name="LTC_Cure" msprop:Generator_ColumnVarNameInTable="columnLTC_Cure" msprop:Generator_ColumnPropNameInRow="LTC_Cure" msprop:Generator_ColumnPropNameInTable="LTC_CureColumn" msprop:Generator_UserColumnName="LTC_Cure" type="xs:string" minOccurs="0" />
<xs:element name="LTC_Leak" msprop:Generator_ColumnVarNameInTable="columnLTC_Leak" msprop:Generator_ColumnPropNameInRow="LTC_Leak" msprop:Generator_ColumnPropNameInTable="LTC_LeakColumn" msprop:Generator_UserColumnName="LTC_Leak" type="xs:string" minOccurs="0" />
<xs:element name="LTC_VacuumCheck" msprop:Generator_ColumnVarNameInTable="columnLTC_VacuumCheck" msprop:Generator_ColumnPropNameInRow="LTC_VacuumCheck" msprop:Generator_ColumnPropNameInTable="LTC_VacuumCheckColumn" msprop:Generator_UserColumnName="LTC_VacuumCheck" type="xs:string" minOccurs="0" />
<xs:element name="LTC_VacuumInterval" msprop:Generator_ColumnVarNameInTable="columnLTC_VacuumInterval" msprop:Generator_ColumnPropNameInRow="LTC_VacuumInterval" msprop:Generator_ColumnPropNameInTable="LTC_VacuumIntervalColumn" msprop:Generator_UserColumnName="LTC_VacuumInterval" type="xs:string" minOccurs="0" />
<xs:element name="LTC_VacuumCheckType" msprop:Generator_ColumnVarNameInTable="columnLTC_VacuumCheckType" msprop:Generator_ColumnPropNameInRow="LTC_VacuumCheckType" msprop:Generator_ColumnPropNameInTable="LTC_VacuumCheckTypeColumn" msprop:Generator_UserColumnName="LTC_VacuumCheckType" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="LeakCheckTypes" msprop:Generator_TableClassName="LeakCheckTypesDataTable" msprop:Generator_TableVarName="tableLeakCheckTypes" msprop:Generator_TablePropName="LeakCheckTypes" msprop:Generator_RowDeletingName="LeakCheckTypesRowDeleting" msprop:Generator_RowChangingName="LeakCheckTypesRowChanging" msprop:Generator_RowEvHandlerName="LeakCheckTypesRowChangeEventHandler" msprop:Generator_RowDeletedName="LeakCheckTypesRowDeleted" msprop:Generator_UserTableName="LeakCheckTypes" msprop:Generator_RowChangedName="LeakCheckTypesRowChanged" msprop:Generator_RowEvArgName="LeakCheckTypesRowChangeEvent" msprop:Generator_RowClassName="LeakCheckTypesRow">
<xs:complexType>
<xs:sequence>
<xs:element name="LTC_Leak" msprop:Generator_ColumnVarNameInTable="columnLTC_Leak" msprop:Generator_ColumnPropNameInRow="LTC_Leak" msprop:Generator_ColumnPropNameInTable="LTC_LeakColumn" msprop:Generator_UserColumnName="LTC_Leak" type="xs:int" />
<xs:element name="LTC_LeakDesc" msprop:Generator_ColumnVarNameInTable="columnLTC_LeakDesc" msprop:Generator_ColumnPropNameInRow="LTC_LeakDesc" msprop:Generator_ColumnPropNameInTable="LTC_LeakDescColumn" msprop:Generator_UserColumnName="LTC_LeakDesc">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="20" />
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Leak_Tolerance" msprop:Generator_ColumnVarNameInTable="columnLeak_Tolerance" msprop:Generator_ColumnPropNameInRow="Leak_Tolerance" msprop:Generator_ColumnPropNameInTable="Leak_ToleranceColumn" msprop:Generator_UserColumnName="Leak_Tolerance" type="xs:decimal" minOccurs="0" />
<xs:element name="LC_Length" msprop:Generator_ColumnVarNameInTable="columnLC_Length" msprop:Generator_ColumnPropNameInRow="LC_Length" msprop:Generator_ColumnPropNameInTable="LC_LengthColumn" msprop:Generator_UserColumnName="LC_Length" type="xs:int" minOccurs="0" />
<xs:element name="VTA" msprop:Generator_ColumnVarNameInTable="columnVTA" msprop:Generator_ColumnPropNameInRow="VTA" msprop:Generator_ColumnPropNameInTable="VTAColumn" msprop:Generator_UserColumnName="VTA" type="xs:boolean" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
RDLC文件中的XML：
<DataSet Name="LeakCheckTypes">
<Query>
<DataSourceName>OprData</DataSourceName>
<CommandText>/* Local Query */</CommandText>
</Query>
<Fields>
<Field Name="LTC_Leak">
<DataField>LTC_Leak</DataField>
<rd:TypeName>System.Int32</rd:TypeName>
</Field>
<Field Name="LTC_LeakDesc">
<DataField>LTC_LeakDesc</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="Leak_Tolerance">
<DataField>Leak_Tolerance</DataField>
<rd:TypeName>System.Decimal</rd:TypeName>
</Field>
<Field Name="LC_Length">
<DataField>LC_Length</DataField>
<rd:TypeName>System.Int32</rd:TypeName>
</Field>
<Field Name="VTA">
<DataField>VTA</DataField>
<rd:TypeName>System.Boolean</rd:TypeName>
</Field>
</Fields>
<rd:DataSetInfo>
<rd:DataSetName>OprData</rd:DataSetName>
<rd:SchemaPath>C:\Users\aridder\Desktop\AC Recipe Builder\AC Recipe Builder\OprReports\OprData.xsd</rd:SchemaPath>
<rd:TableName>LeakCheckTypes</rd:TableName>
<rd:TableAdapterFillMethod>Fill</rd:TableAdapterFillMethod>
<rd:TableAdapterGetDataMethod>GetData</rd:TableAdapterGetDataMethod>
<rd:TableAdapterName>LeakCheckTypesTableAdapter</rd:TableAdapterName>
</rd:DataSetInfo>
</DataSet>
<DataSet Name="Details">
<Query>
<DataSourceName>OprData</DataSourceName>
<CommandText>/* Local Query */</CommandText>
</Query>
<Fields>
<Field Name="Row">
<DataField>Row</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="OPRID">
<DataField>OPRID</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="NAME">
<DataField>NAME</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="LTC_Cure">
<DataField>LTC_Cure</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="LTC_Leak">
<DataField>LTC_Leak</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="LTC_VacuumCheck">
<DataField>LTC_VacuumCheck</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="LTC_VacuumInterval">
<DataField>LTC_VacuumInterval</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
<Field Name="LTC_VacuumCheckType">
<DataField>LTC_VacuumCheckType</DataField>
<rd:TypeName>System.String</rd:TypeName>
</Field>
</Fields>
<rd:DataSetInfo>
<rd:DataSetName>OprData</rd:DataSetName>
<rd:SchemaPath>C:\Users\aridder\Desktop\AC Recipe Builder\AC Recipe Builder\OprReports\OprData.xsd</rd:SchemaPath>
<rd:TableName>Details</rd:TableName>
<rd:TableAdapterFillMethod />
<rd:TableAdapterGetDataMethod />
<rd:TableAdapterName />
</rd:DataSetInfo>
</DataSet>