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    <p>Project Settings don't seem to do well with serializing and saving values beyond the basic types. What you can do is use a User-scoped string-valued setting to store a serialized Dictionary.</p> <p>For my example, I created a setting named <code>SerializedKeyPercentDictionary</code> of Type <code>string</code> and Scope <code>User</code>. I am using JSON for my serialization, as it creates a string of smaller length than most other serializations. For this, you will need to add a reference to System.Runtime.Serializations. With this setting and that reference in place, you can then make a global helper class to provide a strongly-typed dictionary for managing your key-to-percent mapping:</p> <pre><code>Public Class KeyPercentHelper Private Shared _keyPercentDictionary As Dictionary(Of Integer, Decimal) Private Shared _initLock As Object = New Object() Public Shared ReadOnly Property KeyPercentDictionary As Dictionary(Of Integer, Decimal) Get If (_keyPercentDictionary Is Nothing) Then InitializeDictionary() End If Return _keyPercentDictionary End Get End Property Shared Sub New() AddHandler My.Settings.SettingsLoaded, AddressOf HandleSettingsLoad AddHandler My.Settings.SettingsSaving, AddressOf HandleSettingsSaving End Sub Private Shared Sub InitializeDictionary() ' Load dictionary from User Setting. SyncLock _initLock If (_keyPercentDictionary Is Nothing) Then If (String.IsNullOrEmpty(My.Settings.SerializedKeyPercentDictionary)) Then _keyPercentDictionary = New Dictionary(Of Integer, Decimal)() Else Dim ser As New System.Runtime.Serialization.Json.DataContractJsonSerializer(GetType(Dictionary(Of Integer, Decimal))) Using memStream As New System.IO.MemoryStream() Using writer As New System.IO.StreamWriter(memStream) writer.Write(My.Settings.SerializedKeyPercentDictionary) writer.Flush() memStream.Position = 0 _keyPercentDictionary = CType(ser.ReadObject(memStream), Dictionary(Of Integer, Decimal)) End Using End Using End If End If End SyncLock End Sub Private Shared Sub HandleSettingsLoad(ByVal sender As Object, ByVal e As EventArgs) If (_keyPercentDictionary Is Nothing) Then InitializeDictionary() End If End Sub Private Shared Sub HandleSettingsSaving(ByVal sender As Object, ByVal e As EventArgs) ' Ensure User Setting value is updated before save. Dim ser As New System.Runtime.Serialization.Json.DataContractJsonSerializer(GetType(Dictionary(Of Integer, Decimal))) Using memStream As New System.IO.MemoryStream() ser.WriteObject(memStream, _keyPercentDictionary) memStream.Position = 0 Using reader As New System.IO.StreamReader(memStream) My.Settings.SerializedKeyPercentDictionary = reader.ReadToEnd() End Using End Using End Sub End Class </code></pre>
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    1. USMike Guthrie
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    1. COits perfect, thank you!
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    2. COThis is great and works perfectly. FYI, you need to add a reference to System.ServiceModel.Web to get access to System.Runtime.Serialization.Json. Thanks!
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