Access数据类型和.NET数据类型映射
下表列出了 Microsoft Access 和这些数据类型与 Microsoft.NET Framework 数据类型与 OleDbType 枚举的方式中使用的最常见的数据类型。 访问类型名称 数据库数据类型 OLE DB 类型 .NET Framework 类型 成员名称 文本 VarWChar DBTYPE _ WSTR System.String O
下表列出了 Microsoft Access 和这些数据类型与 Microsoft.NET Framework 数据类型与 OleDbType 枚举的方式中使用的最常见的数据类型。
| 访问类型名称 | 数据库数据类型 | OLE DB 类型 | .NET Framework 类型 | 成员名称 |
| 文本 | VarWChar | DBTYPE _ WSTR | System.String | OleDbType.VarWChar |
| 备注 | LongVarWCha r | DBTYPE _ WSTR | System.String | OleDbType.LongVarWChar |
| 编号： 字节 | UnsignedTinyInt | DBTYPE _ UI 1 | System.Byte | OleDbType.UnsignedTinyInt |
| 是 / 否 | Boolean 类型的值 | DBTYPE_BOOL | System.Boolean | OleDbType.Boolean |
| 日期 / 时间 | 日期时间 | DBTYPE_DATE | System.DateTime | OleDbType.Date |
| 货币 | 小数 | DBTYPE_NUMERIC | System.Decimal | OleDbType.Numeric |
| 编号： 十进制 | 小数 | DBTYPE_NUMERIC | System.Decimal | OleDbType.Numeric |
| 编号： Double 类型的值 | 双击 | DBTYPE_R8 | System.Double | OleDbType.Double |
| 自动编号 （复制 ID） | GUID | DBTYPE_GUID | System.Guid | OleDbType.Guid |
| 号码: （复制 ID） | GUID | DBTYPE_GUID | System.Guid | OleDbType.Guid |
| 自动编号 （长整型） | 整数 | DBTYPE_I4 | System.Int 32 | OleDbType.Integer |
| 号码: (长整型） | 整数 | DBTYPE_I4 | System.Int 32 | OleDbType.Integer |
| OLE 对象 | LongVarBinary | DBTYPE_BYTES | System.Byte 数组 | OleDbType.LongVarBinary |
| 编号： Single 类型的值 | 单个 | DBTYPE_R4 | System.Single | OleDbType.Single |
| 编号： Integer 类型的值 | smallint | DBTYPE_I2 | System.Int 16 | OleDbType.SmallInt |
| 二进制 | varbinary * | DBTYPE_BYTES | System.Byte 数组 | OleDbType.Binary |
| 超链接 | VarWChar | DBTYPE _ WSTR | System.String | OleDbType.VarWChar |
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