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Imports System.ComponentModel
Imports System.Drawing.Design
Imports System.Windows.Forms
Namespace PropertyGridEx
Public Class UIFilenameEditor
Inherits System.Drawing.Design.UITypeEditor
Public Overloads Overrides Function GetEditStyle(ByVal context As _
ITypeDescriptorContext) As UITypeEditorEditStyle
If Not context Is Nothing AndAlso Not context.Instance Is Nothing Then
If Not context.PropertyDescriptor.IsReadOnly Then
Return UITypeEditorEditStyle.Modal
End If
End If
Return UITypeEditorEditStyle.None
End Function
<RefreshProperties(RefreshProperties.All)> _
Public Overloads Overrides Function EditValue( _
ByVal context As ITypeDescriptorContext, _
ByVal provider As System.IServiceProvider, _
ByVal value As [Object]) As [Object]
If context Is Nothing OrElse provider Is Nothing _
OrElse context.Instance Is Nothing Then
Return MyBase.EditValue(provider, value)
End If
Dim fileDlg As FileDialog
If context.PropertyDescriptor.Attributes(GetType(SaveFileAttribute)) Is Nothing Then
fileDlg = New OpenFileDialog
Else
fileDlg = New SaveFileDialog
End If
fileDlg.Title = "Select " & context.PropertyDescriptor.DisplayName
fileDlg.FileName = value
Dim filterAtt As FileDialogFilterAttribute = _
context.PropertyDescriptor.Attributes(GetType(FileDialogFilterAttribute))
If Not filterAtt Is Nothing Then fileDlg.Filter = filterAtt.Filter
If fileDlg.ShowDialog() = DialogResult.OK Then
value = fileDlg.FileName
End If
fileDlg.Dispose()
Return value
End Function
<AttributeUsage(AttributeTargets.Property)> _
Public Class FileDialogFilterAttribute
Inherits Attribute
Private _filter As String
Public ReadOnly Property Filter() As String
Get
Return Me._filter
End Get
End Property
Public Sub New(ByVal filter As String)
MyBase.New()
Me._filter = filter
End Sub
End Class
<AttributeUsage(AttributeTargets.Property)> _
Public Class SaveFileAttribute
Inherits Attribute
End Class
Public Enum FileDialogType
LoadFileDialog
SaveFileDialog
End Enum
End Class
End Namespace
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