Свойство Current
Gets the current DtsError element in the collection.
Пространство имен: Microsoft.SqlServer.Dts.Runtime
Сборка: Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)
Синтаксис
'Декларация
Public ReadOnly Property Current As DtsError
Get
'Применение
Dim instance As ErrorEnumerator
Dim value As DtsError
value = instance.Current
public DtsError Current { get; }
public:
property DtsError^ Current {
DtsError^ get ();
}
member Current : DtsError
function get Current () : DtsError
Значение свойства
Тип: Microsoft.SqlServer.Dts.Runtime. . :: . .DtsError
The current DtsError element in the collection.
Замечания
After an enumerator is created, or after a call to the Reset method, the MoveNext method must be called to advance the enumerator to the first element of the collection before the enumerator can read the value of the Current property; otherwise, Current is undefined and throws an exception.
Current also throws an exception if the last call to MoveNext returned false, which indicates the end of the collection.
Current does not move the position of the enumerator, and consecutive calls to Current return the same object until either MoveNext or Reset is called.
An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is invalidated and becomes irrecoverable; thus, the next call to MoveNext or Reset throws an InvalidOperationException. If the collection is modified between calls to MoveNext and Current, Current returns the element that it is set to, even if the enumerator has been invalidated.
Примеры
The following code example adds a task to a package then runs the package. The warnings collection is shown by creating an ErrorEnumerator and displaying each error description.
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Tasks.SendMailTask;
namespace Microsoft.SqlServer.SSIS.Samples
{
class Program
{
static void Main(string[] args)
{
Package package = new Package();
Console.WriteLine("Package errors count before running: {0}", package.Errors.Count);
TaskHost taskH2 = (TaskHost)package.Executables.Add("STOCK:SendMailTask");
taskH2.FailPackageOnFailure = false;
taskH2.FailParentOnFailure = false;
Console.WriteLine("SendMailTask: {0}", taskH2.ID);
// Test that warnings were successfully added to the collection.
package.MaximumErrorCount = 100;
package.FailPackageOnFailure = false;
package.FailParentOnFailure = false;
package.DelayValidation = true;
package.Execute();
Console.WriteLine("Package errors count after running the package: {0}", package.Errors.Count);
// Create the enumerator.
ErrorEnumerator myEnumerator = package.Errors.GetEnumerator();
Console.WriteLine("The collection contains the following values:");
int i = 0;
while ((myEnumerator.MoveNext()) && (myEnumerator.Current != null))
Console.WriteLine("[{0}] {1}", i++, myEnumerator.Current.Description);
}
}
}
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Tasks.SendMailTask
Namespace Microsoft.SqlServer.SSIS.Samples
Class Program
Shared Sub Main(ByVal args() As String)
Dim package As Package = New Package()
Console.WriteLine("Package errors count before running: {0}", package.Errors.Count)
Dim taskH2 As TaskHost = CType(package.Executables.Add("STOCK:SendMailTask"), TaskHost)
taskH2.FailPackageOnFailure = False
taskH2.FailParentOnFailure = False
Console.WriteLine("SendMailTask: {0}", taskH2.ID)
' Test that warnings were successfully added to the collection.
package.MaximumErrorCount = 100
package.FailPackageOnFailure = False
package.FailParentOnFailure = False
package.DelayValidation = True
package.Execute()
Console.WriteLine("Package errors count after running the package: {0}", package.Errors.Count)
' Create the enumerator.
Dim myEnumerator As ErrorEnumerator = package.Errors.GetEnumerator()
Console.WriteLine("The collection contains the following values:")
Dim i As Integer = 0
While (myEnumerator.MoveNext()) &&(myEnumerator.Current <> Nothing)
Console.WriteLine("[{0}] {1}",i = Console.WriteLine("[{0}] {1}",i + 1
End While
End Sub
End Class
End Namespace
Sample Output:
Package errors count before running: 0
SendMailTask: {DE20010F-928A-4E9B-B57F-71D7991EC8F0}
Package errors count after running the package: 3
The collection contains the following values:
[0] SMTP Server not specified
[1] No recipient specified
[2] There were errors during task validation.