MySqlException Class

MySQL Connector/Net

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C# Visual Basic
Visual C++

MySQL Connector/Net

MySqlException Class

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The exception that is thrown when MySQL returns an error. This class cannot be inherited.

Namespace: MySql.Data.MySqlClient
Assembly: MySql.Data (in MySql.Data.dll) Version: 6.2.2.0

Syntax

C#
[SerializableAttribute] public sealed class MySqlException : DbException

Visual Basic (Declaration)
<SerializableAttribute> _ Public NotInheritable Class MySqlException _ Inherits DbException

Visual C++
[SerializableAttribute] public ref class MySqlException sealed : public DbException

Remarks

This class is created whenever the MySql Data Provider encounters an error generated from the server.

Any open connections are not automatically closed when an exception is thrown. If the client application determines that the exception is fatal, it should close any open MySqlDataReader objects or MySqlConnection objects.

Examples

The following example generates a MySqlException due to a missing server, and then displays the exception.

CopyVB.NET

Public Sub ShowException()
Dim mySelectQuery As String = "SELECT column1 FROM table1"
Dim myConnection As New MySqlConnection ("Data Source=localhost;Database=Sample;")
Dim myCommand As New MySqlCommand(mySelectQuery, myConnection)

Try
myCommand.Connection.Open()
Catch e As MySqlException
MessageBox.Show( e.Message )
End Try
End Sub

CopyC#

public void ShowException()
{
string mySelectQuery = "SELECT column1 FROM table1";
MySqlConnection myConnection =
new MySqlConnection("Data Source=localhost;Database=Sample;");
MySqlCommand myCommand = new MySqlCommand(mySelectQuery,myConnection);

try
{
myCommand.Connection.Open();
}
catch (MySqlException e)
{
MessageBox.Show( e.Message );
}
}

Inheritance Hierarchy

System..::.Object
  System..::.Exception
    System..::.SystemException
      System.Runtime.InteropServices..::.ExternalException
        System.Data.Common..::.DbException
          MySql.Data.MySqlClient..::.MySqlException