Specifies the data type of a field, a property, for use in an System.Data.OleDb.OleDbParameter.
Members |
Description |
Empty |
No value (DBTYPE_EMPTY). |
SmallInt |
A 16-bit signed integer (DBTYPE_I2). This maps to System.Int16. |
Integer |
A 32-bit signed integer (DBTYPE_I4). This maps to System.Int32. |
Single |
A floating-point number within the range of -3.40E +38 through 3.40E +38 (DBTYPE_R4). This maps to System.Single. |
Double |
A floating-point number within the range of -1.79E +308 through 1.79E +308 (DBTYPE_R8). This maps to System.Double. |
Currency |
A currency value ranging from -2 63 (or -922,337,203,685,477.5808) to 2 63 -1 (or +922,337,203,685,477.5807) with an accuracy to a ten-thousandth of a currency unit (DBTYPE_CY). This maps to System.Decimal. |
Date |
Date data, stored as a double (DBTYPE_DATE). The whole portion is the number of days since December 30, 1899, and the fractional portion is a fraction of a day. This maps to System.DateTime. |
BSTR |
A null-terminated character string of Unicode characters (DBTYPE_BSTR). This maps to System.String. |
IDispatch |
A pointer to an IDispatch interface (DBTYPE_IDISPATCH). This maps to System.Object. |
Error |
A 32-bit error code (DBTYPE_ERROR). This maps to System.Exception. |
Boolean |
A Boolean value (DBTYPE_BOOL). This maps to System.Boolean. |
Variant |
A special data type that can contain numeric, string, binary, or date data, and also the special values Empty and Null (DBTYPE_VARIANT). This type is assumed if no other is specified. This maps to System.Object. |
IUnknown |
A pointer to an IUnknown interface (DBTYPE_UNKNOWN). This maps to System.Object. |
Decimal |
A fixed precision and scale numeric value between -10 38 -1 and 10 38 -1 (DBTYPE_DECIMAL). This maps to System.Decimal. |
TinyInt |
A 8-bit signed integer (DBTYPE_I1). This maps to System.SByte. |
UnsignedTinyInt |
A 8-bit unsigned integer (DBTYPE_UI1). This maps to System.Byte. |
UnsignedSmallInt |
A 16-bit unsigned integer (DBTYPE_UI2). This maps to System.UInt16. |
UnsignedInt |
A 32-bit unsigned integer (DBTYPE_UI4). This maps to System.UInt32. |
BigInt |
A 64-bit signed integer (DBTYPE_I8). This maps to System.Int64. |
UnsignedBigInt |
A 64-bit unsigned integer (DBTYPE_UI8). This maps to System.UInt64. |
Filetime |
A 64-bit unsigned integer representing the number of 100-nanosecond intervals since January 1, 1601 (DBTYPE_FILETIME). This maps to System.DateTime. |
Guid |
A globally unique identifier (or GUID) (DBTYPE_GUID). This maps to System.Guid. |
Binary |
A stream of binary data (DBTYPE_BYTES). This maps to an System.Array of type System.Byte. |
Char |
A character string (DBTYPE_STR). This maps to System.String. |
WChar |
A null-terminated stream of Unicode characters (DBTYPE_WSTR). This maps to System.String. |
Numeric |
An exact numeric value with a fixed precision and scale (DBTYPE_NUMERIC). This maps to System.Decimal. |
DBDate |
Date data in the format yyyymmdd (DBTYPE_DBDATE). This maps to System.DateTime. |
DBTime |
Time data in the format hhmmss (DBTYPE_DBTIME). This maps to System.TimeSpan. |
DBTimeStamp |
Data and time data in the format yyyymmddhhmmss (DBTYPE_DBTIMESTAMP). This maps to System.DateTime. |
PropVariant |
An automation PROPVARIANT (DBTYPE_PROP_VARIANT). This maps to System.Object. |
VarNumeric |
A variable-length numeric value (System.Data.OleDb.OleDbParameter only). This maps to System.Decimal. |
VarChar |
A variable-length stream of non-Unicode characters (System.Data.OleDb.OleDbParameter only). This maps to System.String. |
LongVarChar |
A long string value (System.Data.OleDb.OleDbParameter only). This maps to System.String. |
VarWChar |
A variable-length, null-terminated stream of Unicode characters (System.Data.OleDb.OleDbParameter only). This maps to System.String. |
LongVarWChar |
A long null-terminated Unicode string value (System.Data.OleDb.OleDbParameter only). This maps to System.String. |
VarBinary |
A variable-length stream of binary data (System.Data.OleDb.OleDbParameter only). This maps to an System.Array of type System.Byte. |
LongVarBinary |
A long binary value (System.Data.OleDb.OleDbParameter only). This maps to an System.Array of type System.Byte. |
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