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Bind to User.Settings

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ComboBox
This is a migrated thread and some comments may be shown as answers.
Garry
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Garry asked on 22 Mar 2010, 03:18 PM
Hey guys,
I am trying to use a RadComboBox to bind to a Specialized.StringCollection in my User.Settings. I am able to load the ComboBox from the collection, but the twoway binding does not seem to work. Is this possible with just stright XAML binding or do I need to create a whole class to accomodate this? I have the twoway binding working for my Window properties so I do know that I appear to have my ResourceDictionary configured correctly. Below is what I have so far.

XAML
<telerikInput:RadComboBox x:Name="comboTheme" ItemsSource="{Binding Source={StaticResource settings}, Path=Default.Theme}" 
                        SelectedItem="{Binding Default.Theme, Mode=TwoWay}"/> 

App.Config
<userSettings>       
    <EliteExtender.Shell.Properties.Settings> 
      <setting name="MainWidth" serializeAs="String">  
        <value>800</value> 
      </setting> 
      <setting name="MainHeight" serializeAs="String">  
        <value>625</value> 
      </setting> 
      <setting name="MainState" serializeAs="String">  
        <value /> 
      </setting> 
      <setting name="Theme" serializeAs="Xml">  
        <value> 
          <ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
            xmlns:xsd="http://www.w3.org/2001/XMLSchema">  
            <string>Office_Blue</string> 
            <string>Office_Black</string> 
            <string>Office_Silver</string> 
            <string>Summer</string> 
            <string>Vista</string> 
            <string>Windows7</string> 
          </ArrayOfString> 
        </value> 
      </setting> 
    </EliteExtender.Shell.Properties.Settings> 
  </userSettings> 

ResourceDictionary (registered in App.Xaml)
<ResourceDictionary  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:settings="clr-namespace:EliteExtender.Shell.Properties">  
    <ResourceDictionary.MergedDictionaries> 
        <ResourceDictionary> 
            <settings:Settings x:Key="settings" /> 
        </ResourceDictionary> 
    </ResourceDictionary.MergedDictionaries> 
</ResourceDictionary> 

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Valeri Hristov
Telerik team
answered on 23 Mar 2010, 10:11 AM
Hello Garry,

RadComboBox should work in such scenarios, I guess that there is a problem with the bindings that are applied on the control. For example, looking at your code snippets, I guess that there is something strange - RadComboBox ItemsSource is bound to a property called Default.Theme, which I guess is some kind of collection; the SelectedItem property is also bound to Default.Theme - I suppose you should be binding to something else, if this property is the same as the ItemsSource's source. A simple application that could be used to observe the problem would be of great help, so I would like to kindly ask you to create one and send it to us through a new support ticket.

Kind regards,
Valeri Hristov
the Telerik team

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Valeri Hristov
Telerik team
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