Look at the inner exception that you are getting. It will tell you which field/property it is having trouble serializing. You can exclude fields/properties from xml serialization by decorating them with the [XmlIgnore] attribute. XmlSerializer does not use the [Serializable] attribute, so I doubt that is the problem.
In my opinion the main form should be responsible for opening both child form. Here is some pseudo that explains what I would do: You will just need to create a simple event MoreClick in the first child. The main benefit of this approach is that you can replicate it as needed and you can … Read more
Using has virtually the same syntax in VB as C#, assuming you’re using .NET 2.0 or later (which implies the VB.NET v8 compiler or later). Basically, just remove the braces and add a “End Using” You can get the full documentation here http://msdn.microsoft.com/en-us/library/htd05whh(VS.80).aspx EDIT If you’re using VS2003 or earlier you’ll need the below code. … Read more