Assembly: System.Data (in system.data.dll)
|AnsiString||A variable-length stream of non-Unicode characters ranging between 1 and 8,000 characters.|
|AnsiStringFixedLength||A fixed-length stream of non-Unicode characters.|
|Binary||A variable-length stream of binary data ranging between 1 and 8,000 bytes. |
ADO.NET cannot correctly infer the type if the byte array is larger than 8,000 bytes. Explicitly specify the DbType when working with byte arrays larger than 8,000 bytes.
|Boolean||A simple type representing Boolean values of true or false.|
|Byte||An 8-bit unsigned integer ranging in value from 0 to 255.|
|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.|
|Date||Date and time data ranging in value from January 1, 1753 to December 31, 9999 to an accuracy of 3.33 milliseconds.|
|DateTime||A type representing a date and time value.|
|Decimal||A simple type representing values ranging from 1.0 x 10 -28 to approximately 7.9 x 10 28 with 28-29 significant digits.|
|Double||A floating point type representing values ranging from approximately 5.0 x 10 -324 to 1.7 x 10 308 with a precision of 15-16 digits.|
|Guid||A globally unique identifier (or GUID).|
|Int16||An integral type representing signed 16-bit integers with values between -32768 and 32767.|
|Int32||An integral type representing signed 32-bit integers with values between -2147483648 and 2147483647.|
|Int64||An integral type representing signed 64-bit integers with values between -9223372036854775808 and 9223372036854775807.|
|Object||A general type representing any reference or value type not explicitly represented by another DbType value.|
|SByte||An integral type representing signed 8-bit integers with values between -128 and 127.|
|Single||A floating point type representing values ranging from approximately 1.5 x 10 -45 to 3.4 x 10 38 with a precision of 7 digits.|
|String||A type representing Unicode character strings.|
|Time||Date and time data ranging in value from January 1, 1753 to December 31, 9999 to an accuracy of 3.33 milliseconds.|
|UInt16||An integral type representing unsigned 16-bit integers with values between 0 and 65535.|
|UInt32||An integral type representing unsigned 32-bit integers with values between 0 and 4294967295.|
|UInt64||An integral type representing unsigned 64-bit integers with values between 0 and 18446744073709551615.|
|VarNumeric||A variable-length numeric value.|
|Xml||A parsed representation of an XML document or fragment.|
The type of a parameter is specific to the .NET Framework data provider. Specifying the type converts the value of the Parameter to the data provider Type before passing the value to the data source. If the type is not specified, ADO.NET infers the data provider Type of the Parameter from the Value property of the Parameter object.
You can also generically specify the type of a Parameter by setting DbType property of a Parameter object. For more information, see Using Parameters with a DataAdapter.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.