DataReaderExtensions.GetFieldValue<T>(DbDataReader, String) Method
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Gets the value of the specified column as the requested type.
public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
static T GetFieldValue(System::Data::Common::DbDataReader ^ reader, System::String ^ name);public static T GetFieldValue<T> (this System.Data.Common.DbDataReader reader, string name);static member GetFieldValue : System.Data.Common.DbDataReader * string -> 'T<Extension()>
Public Function GetFieldValue(Of T) (reader As DbDataReader, name As String) As T- T
The type of the value to be returned.
- reader
- DbDataReader
The data reader to get the column value from.
- name
- String
The name of the column.
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 name specified is not a valid column name.
The value returned by the database doesn't match or cannot be cast to T.
| Produkt | Versjoner |
|---|---|
| .NET | Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Standard | 2.1 |
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