Databases
StackOverflow2013
Postsdbo
POHow do I pass a WPF object that was created in thread X, to thread Y?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow do I pass a WPF object that was created in thread X, to thread Y?
    primarykey
    data
    text
    <p>I create a <code>SolidColorBrush</code> on some non-GUI thread, and want to pass it to a GUI thread to display it, but I get <code>InvalidOperationException</code>: <code>The calling thread cannot access this object because a different thread owns it.</code> (even if I try to <code>Freeze();</code> it). How do I pass object that was created in thread X to thread Y ?</p> <p>I know I can create this <code>SolidColorBrush</code> object in the GUI thread with <code>Dispatcher</code>, but that would complicate everything... I want to create it in the worker thread.</p> <hr> <p>Additional details:</p> <p>I initialize some static delegate in some static class, to allow sending messages from business layer to GUI: </p> <pre><code>public static class Gui{ private static PrintMethodDelegate _printMethod; public static void InitializeGuiInterface(PrintMethodDelegate printMethod){ _printMethod = printMethod; } public static void Print(GuiMessage data) { _printMethod(data); } } </code></pre> <p>Initialization (in the GUI thread):</p> <pre><code>Gui.InitializeGuiInterface(_messagesToUserHandler.PrintMessage); </code></pre> <p>Then in another (non-gui) thread, I use it:</p> <pre><code>Gui.Print(new GuiMessage(testDescription) { Foreground = new SolidColorBrush(someColor) }); </code></pre> <p>while <code>GuiMessage</code> is:</p> <pre><code>public class GuiMessage { public string Msg { get; set; } private SolidColorBrush _foregroundBrush; public SolidColorBrush Foreground { get { return _foregroundBrush; } set { _foregroundBrush = value; } } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USTar
    1. USTar
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. USKhadim Ali
      1. VTFavorite
    2. VO
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHave you tried to write the error message to google? It returns all answers we may give here.
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. USI4V
    2. COI guess the short answer is that you can't. All GUI-related controls/artifacts should be created and handled on the UI thread.
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. USEben Roux
    3. CO@I4V: Yes, I tried. Thank you for your suggestion.
      singulars
      1. POHow do I pass a WPF object that was created in thread X, to thread Y?
      1. USTar
 

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