[CLOSED] How to send dictionary(of string, string) as clientconfig?

[jchau]

I created a DialogWindow class that inherits from Coolite.Window that has an associated clientside Ext.ux.DialogWindow class. In the client class, I have a params property that's just an object. How can I create a clientconfig serverside property in my DialogWindow class that will serialize correctly? I tried:

        Private _URLParams As New Dictionary(Of String, String)
        ''' <summary>
        ''' Query string parameters to send to dialog
        ''' </summary>
        <ClientConfig("urlParams", JsonMode.UnrollCollection)> _
        <DefaultValue(CType(Nothing, Object))> _
        <Category("Config Options")> _
        Public Property URLParams() As Dictionary(Of String, String)
            Get
                Return _URLParams
            End Get
            Set(ByVal value As Dictionary(Of String, String))
                _URLParams = value
            End Set
        End Property

However, I don't see it as part of the rendered script. Is there anything special I need to do? In ASP.NET, dictionary(of string, string) is serialized as a javascript object.

[jchau]

Argh...I always find the answer AFTER I make a post about it. Please let me know if this is the right way to do it. I basically created my own StringDictionaryJsonConverter:

    Public Class StringDictionaryJsonConverter
        Inherits JsonConverter

        Public Overloads Overrides Function CanConvert(ByVal valueType As Type) As Boolean
            Return GetType(Dictionary(Of String, String)).IsAssignableFrom(valueType)
        End Function

        Public Overloads Overrides Sub WriteJson(ByVal writer As JsonWriter, ByVal value As Object)
            Dim dictionary As Dictionary(Of String, String) = TryCast(value, Dictionary(Of String, String))
            If dictionary IsNot Nothing Then
                Dim iterator As Dictionary(Of String, String).Enumerator = dictionary.GetEnumerator()

                writer.WriteStartObject()
                While iterator.MoveNext()
                    writer.WritePropertyName(iterator.Current.Key)
                    writer.WriteValue(iterator.Current.Value)
                End While
                writer.WriteEndObject()

            End If
        End Sub

        Public Overloads Overrides Function ReadJson(ByVal reader As Newtonsoft.Json.JsonReader, ByVal objectType As Type) As Object
            Throw New NotImplementedException()
        End Function

    End Class

[jchau]

I originally used LoadConfig.Params as an example so is that a bug?

        Dictionary<string, string> paramItems = new Dictionary<string, string>();

        [ClientConfig(JsonMode.UnrollCollection)]
        [DefaultValue(null)]
        [NotifyParentProperty(true)]
        [Description("Custom list of parameters passed to the url.")]
        public virtual Dictionary<string, string> Params
        {
            get
            {
                return this.paramItems;
            }
            set
            {
                this.paramItems = value;
            }
        }

[Vladimir]

Hi,

I don't think that is a bug. With Mode Json.UnrollCollection the ClientConfig builder try to serialize each item of collection to one object. The item of Dictionary is KeyValuePair which don't have properties with ClientConfig attribute (please note that only such properties can handled by ClientConfig builder). Therefore serialization for dictionary is empty

I think that your solution with JsonConverter is good.

Hope this help