.NET MySQL Connexion V 1.2

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Introduction

This is a class library in VB.NET made for access on MySQL databases. You can use this library without creating functions for working on the databases.

For using this library, you must install :

• ODBC MySQL 3.51

and the

• Driver ODBC.NET

In this library, you have 3 classes:

• ManipStringForMySQL: This class modifies the string for the SGBD
• MySQL_Requettes: This class makes the request on the SGBD
• MySQL_Utils : This class makes tests on the data of the SGBD

An example of the function with a dataset holding the results of the query:

Public Shared Function MyODBCDataset(ByVal ReqSQL As String, _
         ByVal LaBase As String, ByVal Server As String, _
         ByVal Password As String, ByVal User As String, _
         ByVal NomDataSet As String) As DataSet
    ' Connexion à un server MySQL 
    'avec le Driver ODBC 3.51 avec requette qui renvoie un dataset
    Dim MyConString As String = _
        "DRIVER={MySQL ODBC 3.51 Driver};SERVER=" & Server _
        & ";DATABASE=" & LaBase & ";UID=" & User _
        & ";PASSWORD=" & Password & ";OPTION=3;"

    Dim MyODBCConnexion As New OdbcConnection(MyConString)
    Try
        Dim ds As New DataSet()
        Dim cmd As OdbcDataAdapter = New 
        OdbcDataAdapter(ReqSQL, MyConString)
        Dim MyCommand As New OdbcCommand()
        Dim MyDataReader As OdbcDataReader
        cmd.Fill(ds, NomDataSet)
        MyODBCConnexion.Close()
        Return ds
    Catch MyOdbcException As OdbcException
    ' 
      HttpContext.Current.Response.Write(MyOdbcException.ToString)
    Catch MyException As Exception
    ' 
      HttpContext.Current.Response.Write(MyException.ToString)
    End Try
End Function

The call of this function may be like that:

Dim MonDatasetTemp As DataSet = MySQL_Requettes.MyODBCDataset(
               SQL,
               constantes.ODBCBase, 
               constantes.ODBCServer, 
               constantes.ODBCPwd, 
               constantes.ODBCUser, 
               "MonDataset")

Conclusion

This library is the first example I made for the MySQL use in my ASP.NET solutions. I hope it can be easy for use in your projects.

You can also see the French version of this article more directed for the creation and use of the class library :

• http://www.asp-php.net/scripts/asp.net/lib_class_mysql.php

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