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Problem with non english culture on designers

  • Problem with non english culture on designers
  • Hello

    I have created mvc widget controller with some decimal properties. Controller code is:

    [ControllerToolboxItem(Name = "MapWidget", Title = "Zemljevid", SectionName = "SplosniPrikaziSection")]
        public class MapWidgetController : ControllerBase, IMapConfiguration
            public int? Zoom get; set;
            public bool? ScrollWheel get; set;
            public decimal? CenterLongitude get; set;
            public decimal? CenterLatitude get; set;

    I then created some feather widget designer. Nothing complicated, just two inputs.

    <div class="form-group"><label>Map center</label></div>
    <div class="row">
        <div class="col-sm-6">
            <div class="form-group">
                <input ng-model="properties.CenterLongitude.PropertyValue" type="text" class="form-control" />
        <div class="col-sm-6">
            <div class="form-group">
                <input ng-model="properties.CenterLatitude.PropertyValue" type="text" class="form-control" />

    Now with the testing. I enter value like: 46.084162. I then click save and error pops up: Error! 46.084162 is not a valid value for Decimal. 
    Ok, I presume because I have set Slovenian culture for backend I must write comma instead of dot. So, I write 46,084162 and save. Seams to work. I click page preview in editor(/Action/Preview/sl) and it seams to work.

    I save(publish) page and go to url. The exception pops up: Input string was not in a correct format. Inner exception: 46.084162 is not a valid value for Decimal. The source of exception is Telerik.Sitefinity.Mvc.ControllerActionInvoker.DeserializeControllerProperties.

    What can I do? The same error occures if I don't create designer and just use default "advanced" designer.

    Changing backends culture isn't option because of date formats in all content editing pages.

    Looking forward for reply, Niki


    Update: I wrote custom TypeConverter and I watch CultureInfo value comes as attribute to ConvertTo:
    - On opening designer: Invariant language (LCID 127) 
    - On opening preview: Invariant language (LCID 127)
    - On opening public page: null

     Found bug in class MvcPropertySerializer method ConvertValue.
    On javascript serialization culture must be invariant, but is null.
    That is because of call ConvertFromString. It should call ConvertFromInvariantString at least for SetProperties method.
    At this place string like "43.09" can't properly convert to value if current culture info uses anything else as dot for decimal point.

  • I made a bug post at: 

    I posted hackish solution there.