Elmah.SqlServerCompactErrorLog.GetError C# (CSharp) Méthode

        public override ErrorLogEntry GetError(string id)
        {
            if (id == null)
                throw new ArgumentNullException("id");

            if (id.Length == 0)
                throw new ArgumentException(null, "id");

            Guid errorGuid;

            try
            {
                errorGuid = new Guid(id);
            }
            catch (FormatException e)
            {
                throw new ArgumentException(e.Message, "id", e);
            }

            const string sql = @"
                SELECT 
                    [AllXml]
                FROM 
                    [ELMAH_Error]
                WHERE
                    [ErrorId] = @ErrorId";

            using (var connection = new SqlCeConnection(ConnectionString))
            {
                using (var command = new SqlCeCommand(sql, connection))
                {
                    command.Parameters.Add("@ErrorId", SqlDbType.UniqueIdentifier).Value = errorGuid;

                    connection.Open();

                    var errorXml = (string)command.ExecuteScalar();

                    if (errorXml == null)
                        return null;

                    var error = ErrorXml.DecodeString(errorXml);
                    return new ErrorLogEntry(this, id, error);
                }
            }
        }
    }