DataReader Class

Provides the ability to expose data from any data.

Namespace: Microsoft.VisualStudio.Data
Assembly: Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)

Inheritance Hierarchy

System::Object
  Microsoft.VisualStudio.Data::DataReader
    Microsoft.VisualStudio.Data.AdoDotNet::AdoDotNetDataReader
    Microsoft.VisualStudio.Data.AdoDotNet::AdoDotNetDataTableReader
    Microsoft.VisualStudio.Data.AdoDotNet::AdoDotNetSchemaReader

Syntax

C++

public ref class DataReader abstract : IDisposable

Constructors

	Name	Description
	DataReader()	Class constructor. Instantiates a nonparameterized instance of the DataReader class.

Properties

	Name	Description
	IsClosed	Retrieves a Boolean value that indicates whether the specified reader has been closed.
	ItemCount	Retrieves the number of items in the current block of data.
	Status	Retrieves a numerical status code returned by the method currently providing data to the data reader.

Methods

	Name	Description
	Close()	Closes the DataReader instance.
	Dispose()	Releases managed resources held for the current DataReader instance.
	Dispose(Boolean)	Cleans up resources associated with the current DataReader instance, both when the public Dispose method is called and as well as when the object is finalized with a call to the Finalize method.
	Equals(Object^)	(Inherited from Object.)
	Finalize()	Finalizes the current DataReader instance.(Overrides Object::Finalize().)
	GetBytes(Int32, array<Byte>^, Int32, Int32)	Retrieves a specified number of bytes of raw binary data.
	GetHashCode()	(Inherited from Object.)
	GetItem(Int32)	Retrieves the value of the item at the specified index in the current block of data.
	GetItem(String^)	Retrieves the value of a data item with the specified name in the current block of data.
	GetItemMaxLength(Int32)	Retrieves the maximum length, in characters, of data items at the specified index.
	GetItemName(Int32)	Retrieves the name assigned to the data item at the specified index, if any.
	GetItemType(Int32, DataItemTypeFormat)	Retrieves the data type of a data item item, or items, at the specified index in a specified format.
	GetType()	(Inherited from Object.)
	IsNullItem(Int32)	Indicates whether the data item at the specified index is unspecified, that is, null.
	MemberwiseClone()	(Inherited from Object.)
	NextResult()	Advances the data reader to the next result in cases where the reader contains multiple results.
	Read()	Advances the reader to the next block of data in cases where the reader contains more than one block.
	Terminate()	Terminates the data reader immediately, without necessarily returning all of the data nor setting output parameters.
	ToString()	(Inherited from Object.)

Remarks

All base-level data retrieval mechanisms return a DataReader object.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.