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RoleProvider.GetAllRoles Method

Gets a list of all the roles for the configured applicationName.

Namespace:  System.Web.Security
Assembly:  System.Web (in System.Web.dll)

public abstract string[] GetAllRoles()

Return Value

Type: System.String[]
A string array containing the names of all the roles stored in the data source for the configured applicationName.

GetAllRoles is called by the GetAllRoles method of the Roles class to retrieve a list of role names from the data source. Only the roles for the specified ApplicationName are retrieved.

If no roles exist for the configured applicationName, we recommend that your provider return a string array with no elements.

The following code example shows a sample implementation of the GetAllRoles method.

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];
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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