PgSqlException Class

In This Topic

Syntax
Remarks
Example
Inheritance Hierarchy
See Also

The exception that is generated when PostgreSQL returns a warning or error.

Syntax

Visual Basic
C#

public class PgSqlException : System.Data.Common.DbException, System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable

'Declaration
 
Public Class PgSqlException 
   Inherits System.Data.Common.DbException
   Implements System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable

Remarks

This class is created whenever dotConnect for PostgreSQL encounters an error generated by the server.

If the severity of the error is too great, the server may close the PgSqlConnection. However, the user can reopen the connection and continue.

Example

The following example generates a PgSqlException due to a missing database, and then displays the exception.

csharp

public void ThrowPgSqlException()
{
  string mySelectQuery = "SELECT * FROM Test.Dept";
  PgSqlConnection myConnection =
    new PgSqlConnection("host=server;database=test;user id=postgres");
  PgSqlCommand myCommand = new PgSqlCommand(mySelectQuery,myConnection);
  try
  {
    myCommand.Connection.Open();
  }
  catch (PgSqlException myException)
  {
    MessageBox.Show("Message: " + myException.Message + "\n");
  }
}

Visual Basic

Public Sub ThrowPgSqlException()
  Dim mySelectQuery As String = "SELECT * FROM Test.Dept"
  Dim myConnection As New PgSqlConnection _
    ("host=server;database=test;user id=postgres")
  Dim myCommand As New PgSqlCommand(mySelectQuery, myConnection)
  Try
    myCommand.Connection.Open()
  Catch myException As PgSqlException
    MessageBox.Show("Message: " + myException.Message + ControlChars.Cr)
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.Exception
      System.SystemException
         System.Runtime.InteropServices.ExternalException
            System.Data.Common.DbException
               Devart.Data.PostgreSql.PgSqlException

Reference

PgSqlException Members
Devart.Data.PostgreSql Namespace
PgSqlConnection Class
PgSqlCommand Class

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