RoleProvider.AddUsersToRoles(String[], String[]) 方法

public:
 abstract void AddUsersToRoles(cli::array <System::String ^> ^ usernames, cli::array <System::String ^> ^ roleNames);

public abstract void AddUsersToRoles(string[] usernames, string[] roleNames);

abstract member AddUsersToRoles : string[] * string[] -> unit

Public MustOverride Sub AddUsersToRoles (usernames As String(), roleNames As String())

參數

範例

以下程式碼範例展示了該 AddUsersToRoles 方法的範例實作。

public override void AddUsersToRoles(string[]  usernames, string[] rolenames)
{
  foreach (string rolename in rolenames)
  {
    if (rolename == null || rolename == "")
      throw new ProviderException("Role name cannot be empty or null.");
    if (!RoleExists(rolename))
      throw new ProviderException("Role name not found.");
  }

  foreach (string username in usernames)
  {
    if (username == null || username == "")
      throw new ProviderException("User name cannot be empty or null.");
    if (username.Contains(","))
      throw new ArgumentException("User names cannot contain commas.");

    foreach (string rolename in rolenames)
    {
      if (IsUserInRole(username, rolename))
        throw new ProviderException("User is already in role.");
    }
  }

  OdbcConnection conn = new OdbcConnection(connectionString);
  OdbcCommand cmd = new OdbcCommand("INSERT INTO UsersInRoles "  +
                                    " (Username, Rolename, ApplicationName) " +
                                    " Values(?, ?, ?)", conn);

  OdbcParameter userParm = cmd.Parameters.Add("@Username", OdbcType.VarChar, 255);
  OdbcParameter roleParm = cmd.Parameters.Add("@Rolename", OdbcType.VarChar, 255);
  cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName;

  try
  {
    conn.Open();

    foreach (string username in usernames)
    {
      foreach (string rolename in rolenames)
      {
        userParm.Value = username;
        roleParm.Value = rolename;
        cmd.ExecuteNonQuery();
      }
    }
  }
  catch (OdbcException)
  {
    // Handle exception.
  }
  finally
  {
    conn.Close();      
  }
}

Public Overrides Sub AddUsersToRoles(usernames As String(), rolenames As String()) 

  For Each rolename As String In rolenames
    If rolename Is Nothing OrElse rolename = "" Then _
      Throw New ProviderException("Role name cannot be empty or null.")
    If Not RoleExists(rolename) Then _
      Throw New ProviderException("Role name not found.")
  Next

  For Each username As String in usernames
    If username Is Nothing OrElse username = "" Then _
      Throw New ProviderException("User name cannot be empty or null.")
    If username.Contains(",") Then _
      Throw New ArgumentException("User names cannot contain commas.")

    For Each rolename As String In rolenames
      If IsUserInRole(username, rolename) Then
        Throw New ProviderException("User is already in role.")
      End If
    Next
  Next


  Dim conn As OdbcConnection = New OdbcConnection(connectionString)
            Dim cmd As OdbcCommand = New OdbcCommand("INSERT INTO UsersInRoles " & _
                                           " (Username, Rolename, ApplicationName) " & _
                                           " Values(?, ?, ?)", conn)

  Dim userParm As OdbcParameter = cmd.Parameters.Add("@Username", OdbcType.VarChar, 255)
  Dim roleParm As OdbcParameter = cmd.Parameters.Add("@Rolename", OdbcType.VarChar, 255)
  cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName

  Try
    conn.Open()

    For Each username As String In usernames
      For Each rolename As String In rolenames
        userParm.Value = username
        roleParm.Value = rolename
        cmd.ExecuteNonQuery()
      Next
    Next
  Catch e As OdbcException
    ' Handle exception.
  Finally
    conn.Close()      
  End Try
End Sub

備註

AddUsersToRoles 由類別呼叫 Roles ，將指定的使用者與資料來源中指定的角色關聯起來。 角色會被加入配置 ApplicationName的 。

如果在設定 applicationName中找不到任何指定的角色名稱，我們建議你的服務提供者拋出一個 ProviderException。

如果指定的使用者名稱中沒有與設定中任何角色名稱 applicationName相關聯，我們建議你的提供者拋出一個 ProviderException。

如果指定的使用者名稱 null 中有空字串或是空字串，我們建議你的服務提供者拋出例外。

如果任何指定的角色名稱是 null 空字串，我們建議你的服務提供者拋出例外。

如果您的資料來源支援交易，我們建議您將每個新增操作包含在交易中，並回滾該交易，若有任何新增操作失敗則拋出例外。

另請參閱

• 實作角色提供者