Gets the number of fields in the DbDataReader that are not hidden.
Assembly: System.Data (in System.Data.dll)
This value is used to determine how many fields in the DbDataReader are visible. For example, a SELECT on a partial primary key returns the remaining parts of the key as hidden fields. The hidden fields are always appended behind the visible fields.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.