DataTypeInfos.GetEnumerator Method

Article
12/03/2008

Returns a DataTypeInfoEnumerator that can iterate through the DataTypeInfo collection.

Namespace: Microsoft.SqlServer.Dts.Runtime
Assembly: Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

Syntax

'Declaration
Public Function GetEnumerator As DataTypeInfoEnumerator

public DataTypeInfoEnumerator GetEnumerator ()

public:
DataTypeInfoEnumerator^ GetEnumerator ()

public DataTypeInfoEnumerator GetEnumerator ()

public function GetEnumerator () : DataTypeInfoEnumerator

Return Value

A DataTypeInfoEnumerator for the DataTypeInfo collection.

Example

The following code sample creates a DataTypeInfoEnumerator using the GetEnumerator method, and then iterates over the collection.

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;

namespace DataTypeInfos_GetEnum_Current
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create the DataTypeInfos collection.
            DataTypeInfos dataInfos = new Application().DataTypeInfos;

            //Create the enumerator.
            DataTypeInfoEnumerator myEnumerator = dataInfos.GetEnumerator();
            Console.WriteLine("The collection contains the following values:");
            int i = 0;
            DataTypeInfo dtiObject;
            while ((myEnumerator.MoveNext()) && (myEnumerator.Current != null))
            {
                dtiObject = (DataTypeInfo)myEnumerator.Current;
                Console.WriteLine("[{0}] {1} {2}", i++, dtiObject.TypeName, dtiObject.TypeEnumName);
            }
            // Reset puts the index pointer before the beginning.
            // Do not retrieve from the collection until MoveNext is called.
            myEnumerator.Reset();
            myEnumerator.MoveNext();
            // Now that the enumerator has been reset, and moved to the
            // first item in the collection, show the first item.
            dtiObject = (DataTypeInfo)myEnumerator.Current;
            Console.WriteLine("The first item in the enumerator after Reset:");
            Console.WriteLine("{0}, {1}", dtiObject.TypeName, dtiObject.TypeEnumName);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace DataTypeInfos_GetEnum_Current
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create the DataTypeInfos collection.
            Dim dataInfos As DataTypeInfos =  New Application().DataTypeInfos 
 
            'Create the Enumerator.
            Dim myEnumerator As DataTypeInfoEnumerator =  dataInfos.GetEnumerator() 
            Console.WriteLine("The collection contains the following values:")
            Dim i As Integer =  0 
            Dim dtiObject As DataTypeInfo
            While (myEnumerator.MoveNext()) &&(myEnumerator.Current <> Nothing)
                dtiObject = CType(myEnumerator.Current, DataTypeInfo)
                Console.WriteLine("[{0}] {1} {2}",i = Console.WriteLine("[{0}] {1} {2}",i + 1
            End While
            ' Reset puts the index pointer before the beginning.
            ' Do not retrieve from the collection until MoveNext is called.
            myEnumerator.Reset()
            myEnumerator.MoveNext()
            ' Now that the enumerator has been reset, and moved to the
            ' first item in the collection, show the first item.
            dtiObject = CType(myEnumerator.Current, DataTypeInfo)
            Console.WriteLine("The first item in the enumerator after Reset:")
            Console.WriteLine("{0}, {1}", dtiObject.TypeName, dtiObject.TypeEnumName)
        End Sub
    End Class
End Namespace

Sample Output:

The collection contains the following values:

[0] float DT_R4

[1] double-precision float DT_R8

[2] currency DT_CY

[3] date DT_DATE

[4] Boolean DT_BOOL

[5] decimal DT_DECIMAL

[6] single-byte signed integer DT_I1

[7] single-byte unsigned integer DT_UI1

[8] two-byte signed integer DT_I2

[9] two-byte unsigned integer DT_UI2

[10] four-byte signed integer DT_I4

[11] four-byte unsigned integer DT_UI4

[12] eight-byte signed integer DT_I8

[13] eight-byte unsigned integer DT_UI8

[14] file timestamp DT_FILETIME

[15] unique identifier DT_GUID

[16] byte stream DT_BYTES

[17] string DT_STR

[18] Unicode string DT_WSTR

[19] numeric DT_NUMERIC

[20] database date DT_DBDATE

[21] database time DT_DBTIME

[22] database timestamp DT_DBTIMESTAMP

[23] image DT_IMAGE

[24] text stream DT_TEXT

[25] Unicode text stream DT_NTEXT

The first item in the enumerator after Reset:

float, DT_R4

Thread Safety

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

Platforms

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

Target Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

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