在我看来，OleDbDataAdapter 在尝试为十进制 (28,3) 类型的 db 表列填充 DataSet 时不应该抛出异常。消息是“数值太大，无法放入 96 位小数”。你能检查一下吗，我对 ADO.NET 和 OLE DB 组件没有丰富的经验？
我们在应用程序中的 VB.NET 代码是这样的：
Dim dbDataSet As New DataSet
Dim dbDataAdapter As OleDbDataAdapter
Dim dbCommand As OleDbCommand
Dim conn As OleDbConnection
Dim connectionString As String
'parts where connectionString is set
conn = New OleDbConnection(connectionString)
'part where sqlQuery is set but it ends up being "SELECT Price As 'Price' From PricebookView" - Price is of type decimal(28,3)
dbCommand = New OleDbCommand(sqlQuery, conn)
dbCommand.CommandTimeout = cmdTimeout
dbDataAdapter = New OleDbDataAdapter(dbCommand)
dbDataAdapter.Fill(dbDataSet)
最后一行是抛出异常的地方，堆栈跟踪的顶部是：
at System.Data.ProviderBase.DbBuffer.ReadNumeric(Int32 offset)
at System.Data.OleDb.ColumnBinding.Value_NUMERIC()
at System.Data.OleDb.ColumnBinding.Value()
at System.Data.OleDb.OleDbDataReader.GetValues(Object[] values)
at System.Data.ProviderBase.DataReaderContainer.CommonLanguageSubsetDataReader.GetValues(Object[] values)
at System.Data.ProviderBase.SchemaMapping.LoadDataRow()
at System.Data.Common.DataAdapter.FillLoadDataRow(SchemaMapping mapping)
at System.Data.Common.DataAdapter.FillFromReader(DataSet dataset, DataTable datatable, String srcTable, DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue)
at System.Data.Common.DataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)
...
我不确定它为什么尝试将值设置为 Int32。
谢谢你的时间！