DbDataReader.GetFieldValue<T>(Int32) Method

Definition

Gets the value of the specified column as the requested type.

C#
public virtual T GetFieldValue<T>(int ordinal);

Type Parameters

T

The type of the value to be returned.

Parameters

ordinal
Int32

The zero-based column ordinal.

Returns

T

The value of the specified column.

Exceptions

The connection was dropped or closed during data retrieval.

-or-

The data reader was closed during data retrieval.

-or-

There is no data ready to be read (for example, the first Read() hasn't been called, or it returned false).

-or-

The reader tried to read a previously-read column in sequential mode.

-or-

There was an asynchronous operation in progress. This applies to all Get* methods when running in sequential mode, as they could be called while reading a stream.

The column index is out of range.

The value returned by the database doesn't match or cannot be cast to T.

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1
UWP 10.0