Solved

Using a generic.dictionary as the source for a datagridview

Posted on 2007-03-29
2
2,302 Views
Last Modified: 2011-10-03
vs2005 vb.net
Public Class test

Private displayValue As String
Private dbType As Integer
Property Display() As String
      Get
            Return displayValue
      End Get
      Set(ByVal value As String)
            displayValue = value
      End Set
End Property

Property DataType() As Integer
      Get
            Return dbType
      End Get
      Set(ByVal value As Integer)
            dbType = value
      End Set
End Property

Public Sub New(ByVal dspl As String, ByVal dt As Integer)
      Display = dspl
      DataType = dt
End Sub
End Class
I have a generic.dictionary [Dim tests As New Generic.Dictionary(Of String, test)] which i would like to bind to a datagridview

if it were a collection (which contained a series of class 'test'), I would :
      datagridview1.datasource = collName
      datagridview1.columns(0).datapropertyName = "Display"
      datagridview1.columns(1).datapropertyName = "DataType"

However I don't appear to be able to do the same thing with a dictionary. So far I found that you need to do:
      datagridview1.datasource = tests.values

But I do not know how to bind the specific value of the class for the dictionary.

Thank you
0
Comment
Question by:syscomdev
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 41

Accepted Solution

by:
graye earned 500 total points
ID: 18827564
You are correct... the Generic.Dictionary class does not support the IList (or any of the other supported interfaces) that would qualify it for being a DataSource.

I'd recommend you use a BindingList instead of a Dictionary.   There is a pretty good example that is almost an exact match to your example at the MSDN web site at:

http://msdn2.microsoft.com/en-us/library/ms132679.aspx
0
 

Author Comment

by:syscomdev
ID: 18832699
The one thing that I would lose would be the ability to find a value by a key, i.e.
tests("example1").datatype = 5.

The item method in the BindingList is only by numeric.
So is my basic choice which is more important? To be able to gather the data by key or to have it displayed?

I know I could have a simple data construct for the pairing, but was hoping to get around it.

Thank you for the example and any other assistance.
0

Featured Post

Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Since .Net 2.0, Visual Basic has made it easy to create a splash screen and set it via the "Splash Screen" drop down in the Project Properties.  A splash screen set in this manner is automatically created, displayed and closed by the framework itsel…
The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question