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#Region "Microsoft.VisualBasic::a7c4b491a00c4c994d27672e7b0d7b05, Microsoft.VisualBasic.Core\ComponentModel\DataSource\Property\Controls.vb"
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#End Region
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Imports System.Dynamic
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Imports System.Runtime.CompilerServices
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Imports System.Text
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Imports System.Web.Script.Serialization
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Imports System.Xml.Serialization
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Namespace ComponentModel.DataSourceModel
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Public Module ControlsExtension
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<Extension> Public Function GetMoreProps(ByRef ctrl As Control) As ExtendedProps
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If Not ctrl.Tag Is Nothing Then
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Dim tagType As Type = ctrl.Tag.GetType
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If tagType.Equals(GetType(ExtendedProps)) OrElse tagType.IsInheritsFrom(GetType(ExtendedProps)) Then
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Return DirectCast(ctrl.Tag, ExtendedProps)
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Else
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Return Nothing
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End If
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Else
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Dim tag As New ExtendedProps
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ctrl.Tag = tag
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Return tag
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End If
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End Function
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<Extension> Public Function SetMoreProps(ByRef ctrl As Control, extraProps As ExtendedProps, Optional [overrides] As Boolean = False) As Boolean
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If Not ctrl.Tag Is Nothing AndAlso Not [overrides] Then
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Call VBDebugger.Warning("The control already has a tag data, and not allowed to overrides....")
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Return False
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Else
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ctrl.Tag = extraProps
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Return True
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End If
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End Function
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End Module
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Public Class ExtendedProps : Inherits Dynamic.DynamicObject
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Dim __hash As [Property](Of Object)
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<DataIgnored, XmlIgnore, ScriptIgnore>
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Public Property DynamicHashTable As [Property](Of Object)
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Get
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If __hash Is Nothing Then
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__hash = New [Property](Of Object)
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End If
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Return __hash
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End Get
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Set(value As [Property](Of Object))
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__hash = value
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End Set
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End Property
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Sub New()
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End Sub
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Sub New(init As [Property](Of Object))
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__hash = init
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End Sub
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Public Overrides Function GetDynamicMemberNames() As IEnumerable(Of String)
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Return DynamicHashTable.Properties.Keys
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End Function
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Dim __nameCache As StringBuilder = New StringBuilder
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Public Overrides Function TryGetMember(binder As GetMemberBinder, ByRef result As Object) As Boolean
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Dim name As String = binder.Name
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If __nameCache.Length > 0 Then
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Call __nameCache.Append("." & name)
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name = __nameCache.ToString
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End If
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If DynamicHashTable.Properties.ContainsKey(name) Then
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Call __nameCache.Clear()
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Return DynamicHashTable.Properties.TryGetValue(name, result)
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Else
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result = Me
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Return True
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End If
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End Function
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Public Overrides Function TrySetMember(binder As SetMemberBinder, value As Object) As Boolean
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Dim name As String = binder.Name
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If __nameCache.Length > 0 Then
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Call __nameCache.Append("." & name)
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name = __nameCache.ToString
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End If
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If DynamicHashTable.Properties.ContainsKey(name) Then
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__nameCache.Clear()
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DynamicHashTable.Properties(name) = value
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Else
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End If
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Return True
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End Function
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End Class
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End Namespace
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