Mono can't save user settings

Question

I have problems with saving user settings on Mono (Ubuntu). Here is code sample:

private void Form1_Load(object sender, EventArgs e)
{
    string savedText = Properties.Settings.Default.tbText.ToString();
    tbInput.Text = savedText;
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    string textToSave = tbInput.Text;
    Properties.Settings.Default.tbText = textToSave;
    Properties.Settings.Default.tbText = Properties.Settings.Default.tbText;
    Properties.Settings.Default.Save();
}

But i receive only empty config like

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <userSettings />
</configuration>

I've already tried something like

Properties.Settings.Default.tbText = Properties.Settings.Default.tbText;

from here. But still get same result. How can I use settings in Mono?

Answer 1

1. Remove line

   Properties.Settings.Default.tbText = Properties.Settings.Default.tbText;
   

2. Check you application config file. Probably you have something like this:

   <configuration>
     <configSections>
       <sectionGroup name="userSettings" 
                     type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
         <section name="ExampleApp.Properties.Settings" 
                  type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
       </sectionGroup>
     </configSections>
     ...
     <appSettings>
       <add key="TestKey1" value="Test1" />
       <add key="TestKey2" value="Test2" />
     </appSettings>
     ...
     <userSettings>
       <ExampleApp.Properties.Settings>
         <setting name="textBox1" serializeAs="String">
           <value />
         </setting>
       </ExampleApp.Properties.Settings>
     </userSettings>
   </configuration>
   

   Remove sectionGroup for userSettings.

   <sectionGroup name="userSettings" 
                 type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
       <section name="ExampleApp.Properties.Settings" 
                type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
   </sectionGroup>
   

   Remove also section userSettings.

   <userSettings>
     ...
   </userSettings>
   

3. Delete your local user.config. After first run it will be recreated correctly.

   It should work