DataObjectEnumerator.EnumerateObjects Method

Artikel
10/02/2013

Enumerates items for a set of data objects of the specified type with the specified restrictions and sort string, if supported.

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

Syntax

'Declaration
Public MustOverride Function EnumerateObjects ( _
    typeName As String, _
    items As Object(), _
    restrictions As Object(), _
    sort As String, _
    parameters As Object() _
) As DataReader

public abstract DataReader EnumerateObjects(
    string typeName,
    Object[] items,
    Object[] restrictions,
    string sort,
    Object[] parameters
)

public:
virtual DataReader^ EnumerateObjects(
    String^ typeName, 
    array<Object^>^ items, 
    array<Object^>^ restrictions, 
    String^ sort, 
    array<Object^>^ parameters
) abstract

abstract EnumerateObjects : 
        typeName:string * 
        items:Object[] * 
        restrictions:Object[] * 
        sort:string * 
        parameters:Object[] -> DataReader

public abstract function EnumerateObjects(
    typeName : String, 
    items : Object[], 
    restrictions : Object[], 
    sort : String, 
    parameters : Object[]
) : DataReader

Parameters

typeName
Type: System.String

Name of the type of the object to enumerate.

items
Type: array<System.Object[]

The set of items to enumerate, specified as strings where named items are available, otherwise as indexes. In cases in which a data provider does not support items filtering, this parameter is ignored.

Not supported in Visual Studio 2005.

restrictions
Type: array<System.Object[]

A set of filtering restrictions to apply to the set of returned objects.

sort
Type: System.String

A sort string, which follows syntax for the SQL Server ORDER BY clause. The actual sort order should be source-based; that is, if the client is English and the source is Chinese, the sort should be applied in Chinese.

Not supported in Visual Studio 2005.

parameters
Type: array<System.Object[]

An array whose contents are defined by the given implementation of EnumerateObjects, and which is specified by the Data Object Support XML file. Information supplied in this parameter can be used to provide extra data indicating how to perform the enumeration, allowing implementations of this method to be more data driven.

Return Value

Type: Microsoft.VisualStudio.Data.DataReader
Returns a DataReader object containing the results of the enumeration call.

Exceptions

Exception	Condition
ArgumentNullException	The typeName parameter is null.

Remarks

Other exceptions indicate that a provider-specific error occurred during the enumeration operation.

Note

The items and sort parameters are not used in Visual Studio 2005 and should not be used.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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