[x]
Posted via EE Mobile

Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.
Question
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!
9.1

Listbox woes - cannot remove or disable databound selected item in listbox

Asked by Strongs in Microsoft Visual Basic.Net, Visual Studio

Tags: Visual Studio 2008, vb.net, visual basic

Hi everyone,

I have a win form with listboxes. One listbox is bound to a dataset and I want the user to select an item from this listbox, click on a button and the item is moved to the other listbox. This part I have got to work. What i cannot seem to fathom out is how to remove or disable the selected item from the databound listbox, so that the user cannot reselect the item. Currently the user can select one item and populate the other listbox with duplicates ad infinitum.

I also need to allow the user to go the other way, that is, any items they choose to remove from the listbox that has been populated with selected items from the databound listbox, they can do so and that item is added back to the databound listbox.

After searching the net, i tried the code pasted below, but this simply removes ALL records from the databound listbox.

Hope someone can help. 
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:

Private Sub btnMoveRight_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnMoveRight.Click
        Dim tmpstr As DataRowView 
        Try
            If lbAvailQuestions.SelectedIndex = -1 Then
                Exit Sub
            Else
                tmpstr = CType(Me.lbAvailQuestions.SelectedItem, DataRowView)
                Me.lbChosenQuest.Items.Add(tmpstr("QuestText"))
                Me.lbAvailQuestions.DataSource = Nothing 'this deletes all items in the listbox
                Me.lbAvailQuestions.Refresh()
                Me.lbAvailQuestions.Items.RemoveAt(lbAvailQuestions.SelectedIndex) 'this throws an error because the list no longer exists
            End If
        Catch ex As Exception
            MessageBox.Show(Err.Number & vbNewLine & ex.Message, "Data Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
        End Try 
    End Sub
[+][-]11/07/09 07:39 AM, ID: 25766617Accepted Solution

View this solution now by starting your 30-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

About this solution

Zones: Microsoft Visual Basic.Net, Visual Studio
Tags: Visual Studio 2008, vb.net, visual basic
Sign Up Now!
Solution Provided By: Ashok9
Participating Experts: 2
Solution Grade: A
 
[+][-]11/07/09 06:33 AM, ID: 25766441Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]11/07/09 07:04 AM, ID: 25766527Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]11/07/09 08:57 AM, ID: 25767055Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]11/07/09 11:07 AM, ID: 25767604Assisted Solution

Assisted solutions are selected by the member who asked the question as a comment that contributed to their question's solution.

Start your 30-day free trial to view this Assisted Solution or ask the Experts your question.

 
[+][-]11/08/09 11:09 PM, ID: 25773865Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
 
Loading Advertisement...
20091111-EE-VQP-92 - Hierarchy / EE_QW_3_20080625