so I did a quick test
using System;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(Properties.Settings.Default.test.Length);
Console.ReadKey();
}
}
}
the test setting contains a long text, over 50,000 characters
it does work.
what i did is I changed the app.config manually not from the visual studio solution properties setting.
I assume the setting screen use default maximum value. default maximum value for a textbox is 32,767 characters.
so can you try your test again by changing the app.config by yourself?
do not use the visual studio solution properties setting screen.