SqlDataReader.FieldCount Property
Gets the number of columns in the current row.
Namespace: System.Data.SqlClient
Assembly: System.Data (in System.Data.dll)
Property Value
Type: System.Int32When not positioned in a valid recordset, 0; otherwise the number of columns in the current row. The default is -1.
Implements
IDataRecord.FieldCount| Exception | Condition |
|---|---|
| NotSupportedException | There is no current connection to an instance of SQL Server. |
Executing a query that, by its nature, does not return rows (such as a DELETE query), sets FieldCount to 0. However. this should not be confused with a query that returns 0 rows (such as SELECT * FROM table WHERE 1 = 2) in which case FieldCount returns the number of columns in the table, including hidden fields. Use VisibleFieldCount to exclude hidden fields.
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.
