How can Implement a string Collection Editor in a property Grid

How can Implement a string Collection Editor in a property Grid

• Ganeshm

  Hi vbjunkie,
  
  System.Design.dll assembly has a built-in StringCollectionEditor, use it instead of creating your own CollectionEditor for a collection of strings:
  
  <Editor("System.Windows.Forms.Design.StringCollectionEditor, System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")> _
  Public Class MyStringCollection
    ' Implementation of your string collection
  End Class

  Regards,

  -chris

  
  
  

• Richard Berg MSFT

  This is what I did and still I get the error
  
  
  PersonConverter class
  
  

  Public Class PersonConverter Inherits ExpandableObjectConverter   Public Overloads Overrides Function CanConvertFrom(ByVal context As System.ComponentModel.ITypeDescriptorContext, _ ByVal sourceType As System.Type) As Boolean If sourceType.Equals(GetType(String)) Then Return False Else Return MyBase.CanConvertFrom(context, sourceType) End If End Function Public Overloads Overrides Function CanConvertTo(ByVal context As System.ComponentModel.ITypeDescriptorContext, _ ByVal destinationType As System.Type) As Boolean If destinationType.Equals(GetType(String)) Then Return True Else Return MyBase.CanConvertFrom(context, destinationType) End If End Function Public Overloads Overrides Function ConvertTo(ByVal context As System.ComponentModel.ITypeDescriptorContext, _ ByVal culture As System.Globalization.CultureInfo, _ ByVal value As Object, _ ByVal destinationType As System.Type) As Object Dim Parts() As String Parts = CType(value, String).Split(New Char() {","}) Dim p As New Person(Parts(0), Parts(1), Parts(3)) Return p End Function Public Overrides Function ConvertFrom(ByVal context As System.ComponentModel.ITypeDescriptorContext, _ ByVal culture As System.Globalization.CultureInfo, _ ByVal value As Object) As Object   Return MyBase.ConvertFrom(context, culture, value) End Function Public Overrides Function GetPropertiesSupported(ByVal context As System.ComponentModel.ITypeDescriptorContext) As Boolean Return True End Function Public Overrides Function GetProperties(ByVal context As System.ComponentModel.ITypeDescriptorContext, _ ByVal value As Object, ByVal attributes() As System.Attribute) As System.ComponentModel.PropertyDescriptorCollection Return MyBase.GetProperties(context, value, attributes) End Function End Class

  
  
  
  
  

  Imports System Imports System.ComponentModel Imports System.Collections.ObjectModel <EditorAttribute(GetType(System.ComponentModel.Design.CollectionEditor), _ GetType(System.Drawing.Design.UITypeEditor))> _ Public Class PersonCollection(Of t) Inherits Collection(Of t)   end Class

  
  
  

  Imports System.ComponentModel Imports System.ComponentModel.Design   <TypeConverter(GetType(PersonConverter)), _ Serializable()> _ Public Class Person Private mFirstName As String Private mLastName As String Private mAge As String Private mPeople As PersonCollection(Of String)   Public Sub New(ByVal FirstName As String, _ ByVal LastName As String, _ ByVal age As Integer) mFirstName = FirstName.Trim mLastName = LastName.Trim mAge = age End Sub Public Sub New() mFirstName = String.Empty mLastName = String.Empty mAge = 0 End Sub Public Property FirstName() As String Get Return mFirstName End Get Set(ByVal value As String) mFirstName = value End Set End Property   Public Property LastName() As String Get Return mLastName End Get Set(ByVal value As String) mLastName = value End Set End Property   Public Property Age() As Integer Get Return mAge End Get Set(ByVal value As Integer) mAge = value End Set End Property Public Property People() As PersonCollection(Of String) Get Return mPeople End Get Set(ByVal value As PersonCollection(Of String)) mPeople = value End Set End Property End Class

  
  
  
  in the form added a property grid and
  

  Private mPerson As New Person Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.PropertyGrid1.SelectedObject = mPerson End Sub

  
  
  
  get the error pressing add
  
  any ideas
  

• Kousay

  Sorry to bother you again
  Just to say that i still get the error.
  
  I have found a link that explain but i cannot make it work under 2.0 framework
  
  
  http://blogs.msdn.com/toub/archive/2004/10/12/241277.aspx
  
  can you help
  
  thanks
  

• gjc_vp

  Thanks a lot for the links and time!!
  
  
  

• Claudio Rossi

  Hi VBJunkie,

  Did you ever get a solution to your question I'm trying to do something similar to your origianl post but seem to get stuck at a similar point.

  Any help would be appriciated

  
  
  

• Dubouku

  Thanks a lot for your time in trying to help me
  
  vbjunkie
  

• Neil Dela Osa

  Hi vbjunkie,
  
  Sure, I'll take your code offline and test it later on my notebook, to see if it works on 2.0 framework; rightnow the machine I'm using has no 2.0 framework installed. I'll update you later.
  
  
  Regards,
  
  -chris
  
  

• dickP

  Guys have a look at the msdn page for this.

  http://msdn2.microsoft.com/en-us/library/42737xf2(VS.80).aspx

  take a look at the community content. A neat solution is given there for C#.

  Geethan

  
  

• Adak

  Thats great
  
  However I would like to learn how to make one as i am planning to use the property grid quite a bit and i wanted to learn how to make my own collection editor.
  
  Would it be too much too ask you to show me how to do it
  
  thanks alot
  

• zonehenge

  vbjunkie wrote:

  Thanks a lot for your time in trying to help me vbjunkie

  
  
  Hi vbjunkie,
  
  I tried your codes with my VB.NET2005, and it works fine. Can you give me the details of your problem regarding the codes you posted or can you email me the zip containing the project at gwapo@models.com
  
  
  Thanks,
  
  -chris
  
  

• mindshoe

  Hi
  
  Thanks for your reply.
  I have emailed you a zip file containing a small project.
  Press on people and then add in the collection editor and you get the error
  
  Thanks again
  

• ku19832001

  Hi,
  
  Here's a codeproject article that details the creation of custom CollectionEditor:
  http://www.codeproject.com/csharp/DzCollectionEditor.asp#CollectionEditor
  
  To get most of the PropertyGrid control, try this article:
  http://msdn.microsoft.com/library/default.asp url=/library/en-us/dndotnet/html/usingpropgrid.asp
  
  
  Regards,
  
  -chris
  
  
• How can Implement a string Collection Editor in a property Grid