How to perform the language based Syntax highlighting in WinForms SyntaxEditor (EditControl)?

private void menuItem1_Click(object sender, System.EventArgs e)
{
    try
    {
        IConfigLanguage activeLang = this.editControl1.Parser.Formats as IConfigLanguage;
        frmConfigDialog editConfig = new frmConfigDialog(this.editControl1.Configurator,activeLang);
        if(editConfig.ShowDialog(this) == DialogResult.OK && activeLang != null)
        {
            IConfigLanguage newLang = editConfig.Configurator.KnownLanguageNames.Contains(activeLang.Language)?
editConfig.Configurator[ activeLang.Language ] : editConfig.Configurator.DefaultLanguage;
            if( newLang != null )
            {
               this.editControl1.Configurator = editConfig.Configurator;
               this.editControl1.ResetColoring( newLang );
            }
        }
    }
    catch( ArgumentException ex )
    {
        Debug.WriteLine( ex.Message + Environment.NewLine + ex.StackTrace );
        throw;
    }
}
private void menuItemCSharp_Click(object sender, System.EventArgs e)
{
    this.editControl1.LoadFile("..\\..\\Test Files\\CSharpSource.cs");
}
private void menuItemVB_Click(object sender, System.EventArgs e)
{
    this.editControl1.LoadFile("..\\..\\Test Files\\VBSource.vb");
}

Private Sub menuItem1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles menuItem1.Click
    Try
         Dim activeLang As IConfigLanguage = Me.editControl1.Parser.Formats '
         Dim editConfig As New frmConfigDialog(Me.editControl1.Configurator, activeLang)
         If editConfig.ShowDialog(Me) = DialogResult.OK AndAlso Not (activeLang Is Nothing) Then
            Dim newLang As IConfigLanguage = IIf(editConfig.Configurator.KnownLanguageNames.Contains(activeLang.Language),
editConfig.Configurator(activeLang.Language), editConfig.Configurator.DefaultLanguage) 'TODO: For performance
reasons this should be changed to nested IF statements
            If Not (newLang Is Nothing) Then
               Me.editControl1.Configurator = editConfig.Configurator
               Me.editControl1.ResetColoring(newLang)
            End If
         End If
         Catch ex As ArgumentException
              Debug.WriteLine(ex.Message + Environment.NewLine + ex.StackTrace)
         Throw
     End Try
End Sub
Private Sub menuItemCsharp_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles
menuItemCsharp.Click
     Me.editControl1.LoadFile("..\Test Files\CSharpSource.cs")
End Sub
Private Sub MenuItemVB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemVB.Click
     Me.editControl1.LoadFile("..\Test Files\VBSource.vb")
End Sub