DbDataReader.GetTextReader(Int32) Method
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Gets a text reader to retrieve data from the column.
public:
virtual System::IO::TextReader ^ GetTextReader(int ordinal);public virtual System.IO.TextReader GetTextReader(int ordinal);abstract member GetTextReader : int -> System.IO.TextReader
override this.GetTextReader : int -> System.IO.TextReaderPublic Overridable Function GetTextReader (ordinal As Integer) As TextReader- ordinal
- Int32
The zero-based column ordinal.
A text reader.
The connection was dropped or closed during the data retrieval.
-or-
The data reader is closed during the data retrieval.
-or-
There is no data ready to be read (for example, the first Read() hasn't been called, or returned false).
-or-
The data 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 specified column isn't a text type that supports reading with a TextReader.
GetTextReader only supports the retrieval of values that can be converted to character arrays (strings).
| Produkt | Verzie |
|---|---|
| .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 |
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