|  Code | Error code. PostgreSQL 7.4 and up. | 
|  Detail | Detailed error message. PostgreSQL 7.4 and up. | 
|  ErrorSql | String containing the sql sent which produced this error. | 
|  File | Source file (in backend) reporting the error. PostgreSQL 7.4 and up. | 
|  Hint | Suggestion to help resolve the error. PostgreSQL 7.4 and up. | 
|  InternalPosition | Position (one based) within the query string where the error was encounterd. This position refers to an internal command executed for example inside a PL/pgSQL function. PostgreSQL 7.4 and up. | 
|  InternalQuery | Internal query string where the error was encounterd. This position refers to an internal command executed for example inside a PL/pgSQL function. PostgreSQL 7.4 and up. | 
|  Line | Source file line number (in backend) reporting the error. PostgreSQL 7.4 and up. | 
|  Message | Terse error message. All versions. | 
|  Position | Position (one based) within the query string where the error was encounterd. PostgreSQL 7.4 and up. | 
|  Routine | Source routine (in backend) reporting the error. PostgreSQL 7.4 and up. | 
|  Severity | Severity code. All versions. | 
|  Where | Trace back information. PostgreSQL 7.4 and up. | 
|  Equals (inherited from Object) | |
|  GetHashCode (inherited from Object) | |
|  GetType (inherited from Object) | |
|  ToString | Return a string representation of this error object. | 
NpgsqlError Class | Npgsql Namespace