Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>EDIT:</p> <p>After discussion, it is apparent that you cannot access a listbox from a thread in this method, it is unsafe as per <a href="http://msdn.microsoft.com/en-us/library/ms171728%28v=vs.85%29.aspx" rel="nofollow">this article</a>. Instead, you must use the Status event from your ClientManager class. You will need to make three simple edits:</p> <p>First, update the Status Handler in Form1 to add the text to a new listbox. (Please change listbox name accordingly)</p> <pre><code>Private Sub manager_Status(message As String) Handles manager.Status ' CODE ADDED ' added code to add the text to a listbox, instead of a textbox ListBox1.Items.Add(message) End Sub </code></pre> <p>Second, Make your ClientManager RaiseStatus sub to be public. It needs to be public, so the Client Class can use it in the third step.</p> <pre><code>' CODE ADDED ' change access modifier to public Public Sub RaiseStatus(txt As String) form.Invoke(RaiseStatusInvoker, txt) End Sub </code></pre> <p>Last, update the Client Class.HandleMessage sub to use the parent's RaiseStatus Event (the one you just made public in the last step)</p> <pre><code>Private Sub HandleMessage(msg As String) Dim part() As String = msg.Split(":") Dim command As String = part(0).ToUpper() If command = "LOGIN" Then Me.name = part(1) ' This is unsafe, you cannot access the parent thread this way '**Form1.listbox1.item.add(part(1))** ' CODE ADDED ' this is safe, using the event handler. ' parent.RaiseStatus("hello world") parent.RaiseStatus(part(1)) ElseIf command = "ALL" Then parent.SendAll(Me, part(1)) ElseIf command = "PRIVATE" Then parent.SendTo(Me, part(1), part(2)) End If End Sub </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POVb.net Network Programming cant add new user to listbox
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USlaylarenee
    1. USlaylarenee
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHI thx for the help syntax error anyway after m changing to form1.listbox1.items.add(part(1)) it so nothing on my listbox1's list item. the MessageBox.show() correctly but the code add without error now but still not display result. i think the real problem is not that error. any tip?
      singulars
      1. PO
      1. USBong NakMadaraz
    2. COI updated this post with a solution.
      singulars
      1. PO
      1. USlaylarenee
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload