RoleProvider.GetAllRoles Metode

Definisi

Ruang nama:

System.Web.Security

Rakitan:

System.Web.ApplicationServices.dll

Mendapatkan daftar semua peran untuk yang dikonfigurasi applicationName.

public:
 abstract cli::array <System::String ^> ^ GetAllRoles();

public abstract string[] GetAllRoles ();

abstract member GetAllRoles : unit -> string[]

Public MustOverride Function GetAllRoles () As String()

Mengembalikan

String[]

Array string yang berisi nama semua peran yang disimpan dalam sumber data untuk yang dikonfigurasi applicationName.

Contoh

Contoh kode berikut menunjukkan implementasi GetAllRoles sampel metode .

public override string[] GetAllRoles()
{
  string tmpRoleNames = "";

  OdbcConnection conn = new OdbcConnection(connectionString);
  OdbcCommand cmd = new OdbcCommand("SELECT Rolename FROM Roles "  +
                                    " WHERE ApplicationName = ?", conn);

  cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName;

  OdbcDataReader reader = null;

  try
  {
    conn.Open();

    reader = cmd.ExecuteReader();

    while (reader.Read())
    {
      tmpRoleNames += reader.GetString(0) + ",";
    }
  }
  catch (OdbcException)
  {
    // Handle exception.
  }
  finally
  {
    if (reader != null) { reader.Close(); }
    conn.Close();      
  }

  if (tmpRoleNames.Length > 0)
  {
    // Remove trailing comma.
    tmpRoleNames = tmpRoleNames.Substring(0, tmpRoleNames.Length - 1);
    return tmpRoleNames.Split(',');
  }

  return new string[0];
}

Public Overrides Function GetAllRoles() As String()
    Dim tmpRoleNames As String = ""

    Dim conn As OdbcConnection = New OdbcConnection(connectionString)
    Dim cmd As OdbcCommand = New OdbcCommand("SELECT Rolename FROM Roles " & _
                                             " WHERE ApplicationName = ?", conn)

    cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName

    Dim reader As OdbcDataReader = Nothing

    Try
        conn.Open()

        reader = cmd.ExecuteReader()

        Do While reader.Read()
            tmpRoleNames &= reader.GetString(0) & ","
        Loop
    Catch e As OdbcException
        ' Handle exception.
    Finally
        If Not reader Is Nothing Then reader.Close()
        conn.Close()
    End Try

    If tmpRoleNames.Length > 0 Then
        ' Remove trailing comma.
        tmpRoleNames = tmpRoleNames.Substring(0, tmpRoleNames.Length - 1)
        Return tmpRoleNames.Split(CChar(","))
    End If

    Return New String() {}
End Function

Keterangan

GetAllRoles dipanggil dengan GetAllRoles metode Roles kelas untuk mengambil daftar nama peran dari sumber data. Hanya peran untuk yang ditentukan ApplicationName yang diambil.

Jika tidak ada peran untuk yang dikonfigurasi applicationName, kami sarankan penyedia Anda mengembalikan array string tanpa elemen.

Lihat juga

• Menerapkan Penyedia Peran