WPF Binding My.Settings collection to Combobox items

Question

I\'m VERY new to WPF, and still trying to wrap my head around binding in XAML.

I\'d like to populate a combobox with the values of a string collection in my.settings. I

Answer 1

You could also store the list as a delimited string in settings then use a converter.

/// 

/// Converts a delimited set of strings to a list and back again. The parameter defines the delimiter
/// 
public class StringToListConverter : IValueConverter {
 /// 

 /// Takes a string, returns a list seperated by {parameter}
 /// 
 public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
     string serializedList = (value ?? string.Empty).ToString(),
            splitter = (parameter ?? string.Empty).ToString();
     if(serializedList.Trim().Length == 0) {
         return value;
     }
     return serializedList.Split(new[] { splitter }, StringSplitOptions.RemoveEmptyEntries);
 }
 /// 

 /// Takes a list, returns a string seperated by {parameter}
 /// 
 public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
     var items = value as IEnumerable;
     var splitter = (parameter ?? string.Empty).ToString();
     if(value == null || items == null) {
         return value;
     }
     StringBuilder buffer = new StringBuilder();
     foreach(var itm in items) {
         buffer.Append(itm.ToString()).Append(splitter);
     }
     return buffer.ToString(0, splitter.Length > 0 ? buffer.Length - splitter.Length : buffer.Length);
 }
}

Then when a browse button is clicked, you can add to the list:

var items = Settings.Default.ImportHistory.Split('|');
if(!items.Contains(dlgOpen.FileNames[0])) {
 Settings.Default.ImportHistory += ("|" + dlgOpen.FileNames[0]);
}
cboFilename.SelectedValue = dlgOpen.FileNames[0];
Settings.Default.Save();