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Sign inDbDataReader.GetFieldValue<T>(Int32) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the value of the specified column as the requested type.
public:
generic <typename T>
virtual T GetFieldValue(int ordinal);public virtual T GetFieldValue<T>(int ordinal);abstract member GetFieldValue : int -> 'T
override this.GetFieldValue : int -> 'TPublic Overridable Function GetFieldValue(Of T) (ordinal As Integer) As T- T
The type of the value to be returned.
- ordinal
- Int32
The zero-based column ordinal.
T
The value of the specified column.
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, 10 |
| .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 |