OleDbException Sınıf

Tanım

public ref class OleDbException sealed : System::Data::Common::DbException

public ref class OleDbException sealed : System::Runtime::InteropServices::ExternalException

public sealed class OleDbException : System.Data.Common.DbException

[System.Serializable]
public sealed class OleDbException : System.Runtime.InteropServices.ExternalException

[System.Serializable]
public sealed class OleDbException : System.Data.Common.DbException

type OleDbException = class
    inherit DbException

[<System.Serializable>]
type OleDbException = class
    inherit ExternalException

[<System.Serializable>]
type OleDbException = class
    inherit DbException

Public NotInheritable Class OleDbException
Inherits DbException

Public NotInheritable Class OleDbException
Inherits ExternalException

Devralma

Object

Exception

DbException

OleDbException

Devralma

Object

Exception

SystemException

ExternalException

DbException

OleDbException

Devralma

Object

Exception

SystemException

ExternalException

OleDbException

Öznitelikler

SerializableAttribute

Örnekler

Aşağıdaki örnek, bir OleDbException eksik veri kaynağı nedeniyle bir hata oluşturur ve özel durumu görüntüler.The following example generates an OleDbException because of a missing data source, and then displays the exception.

public void ShowOleDbException()
{
   string mySelectQuery = "SELECT column1 FROM table1";
   OleDbConnection myConnection =
      new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;DataSource=");
   OleDbCommand myCommand = new OleDbCommand(mySelectQuery,myConnection);

   try
   {
      myCommand.Connection.Open();
   }
   catch (OleDbException e)
   {
     string errorMessages = "";

     for (int i=0; i < e.Errors.Count; i++)
     {
         errorMessages += "Index #" + i + "\n" +
                          "Message: " + e.Errors[i].Message + "\n" +
                          "NativeError: " + e.Errors[i].NativeError + "\n" +
                          "Source: " + e.Errors[i].Source + "\n" +
                          "SQLState: " + e.Errors[i].SQLState + "\n";
     }

     System.Diagnostics.EventLog log = new System.Diagnostics.EventLog();
     log.Source = "My Application";
     log.WriteEntry(errorMessages);
     Console.WriteLine("An exception occurred. Please contact your system administrator.");
   }
}

Public Sub ShowOleDbException()
    Dim mySelectQuery As String = "SELECT column1 FROM table1"
    Dim myConnection As New OleDbConnection _
       ("Provider=Microsoft.Jet.OLEDB.4.0;DataSource=")
    Dim myCommand As New OleDbCommand(mySelectQuery, myConnection)

    Try
        myCommand.Connection.Open()
    Catch e As OleDbException
        Dim errorMessages As String
        Dim i As Integer

        For i = 0 To e.Errors.Count - 1
            errorMessages += "Index #" & i.ToString() & ControlChars.Cr _
                           & "Message: " & e.Errors(i).Message & ControlChars.Cr _
                           & "NativeError: " & e.Errors(i).NativeError & ControlChars.Cr _
                           & "Source: " & e.Errors(i).Source & ControlChars.Cr _
                           & "SQLState: " & e.Errors(i).SQLState & ControlChars.Cr
        Next i

       Dim log As New System.Diagnostics.EventLog()
       log.Source = "My Application"
       log.WriteEntry(errorMessages)
       Console.WriteLine("An exception occurred. Please contact your system administrator.")
    End Try
End Sub

Açıklamalar

Bu sınıf, OLE DB için .NET Framework Veri Sağlayıcısı sunucudan oluşturulan bir hatayla karşılaştığında oluşturulur.This class is created whenever the .NET Framework Data Provider for OLE DB encounters an error generated from the server. (İstemci tarafı hataları standart ortak dil çalışma zamanı özel durumları olarak oluşturulur.) OleDbException her zaman en az bir örneği içerir OleDbError .(Client side errors are thrown as standard common language runtime exceptions.) OleDbException always contains at least one instance of OleDbError.

Hatanın önem derecesi çok harika ise, sunucu kapatılabilir OleDbConnection .If the severity of the error is too great, the server may close the OleDbConnection. Ancak, Kullanıcı bağlantıyı yeniden açabilir ve devam edebilir.However, the user can reopen the connection and continue.

.NET Framework veri sağlayıcısı için özel durumları işleme hakkında genel bilgi için bkz SqlException ..For general information about handling exceptions for a .NET Framework data provider, see SqlException.

Özellikler

Yöntemler

Ekinlikler

Şunlara uygulanır

Ayrıca bkz.

• OleDbErrorCollection
• .NET 'te özel durumları işleme ve atmaHandling and throwing exceptions in .NET