2 Bugs fixed!

The bug that was causing the replacement of the first element in the
combo box was fixed removing the following lines in the Designed.cs
this.nombreComboBox.DataBindings.Add(new
System.Windows.Forms.Binding("Text", this.switchBindingSource, "nombre",
true));
this.nombreComboBox.DataBindings.Add(new
System.Windows.Forms.Binding("SelectedValue", this.switchBindingSource,
"ip", true));

The other bug fixed was the failure in closing the app and the action
that correct it was instead of using the selectionIndexChangedEvent (it
executes more than 1 time), i use the SelectionChangedCommited