SqlDataReader.GetXmlReader(Int32) Method

Definition

Namespace:

System.Data.SqlClient

Assembly:

System.Data.SqlClient.dll

Package:

System.Data.SqlClient v4.9.0

Source:

System.Data.SqlClient.notsupported.cs

Retrieves data of type XML as an XmlReader.

C#

public virtual System.Xml.XmlReader GetXmlReader(int i);

Parameters

i

Int32

The value of the specified column.

Returns

XmlReader

The returned object.

Exceptions

InvalidOperationException

The connection drops or is closed during the data retrieval.

The SqlDataReader is closed during the data retrieval.

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

Trying to read a previously read column in sequential mode.

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.

IndexOutOfRangeException

Trying to read a column that does not exist.

InvalidCastException

The returned type was not xml.

Remarks

The XmlReader object returned by GetXmlReader does not support asynchronous operations. If you require asynchronous operations on an XmlReader, cast the XML column to an NVARCHAR(MAX) on the server and use GetTextReader with Create.

SqlException exceptions raised from XmlReader are thrown as XmlException exceptions; check the inner exception for the SqlException.

GetChars will raise an InvalidOperationException exception when used on an object returned by GetXmlReader when SequentialAccess is in effect.

For more information, see SqlClient Streaming Support.

Applies to