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plurals

PO
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7953083
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2011-10-31T11:29:46.700
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2011-10-31T12:00:54.830
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2011-10-31T12:00:54.830
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text
Body
Only the UI thread can access UI elements, which I'm guessing is what those <code>txt</code> things are. <code>Parallel.Invoke</code> is in your case not the UI thread, so the exception is thrown when you try to access the <code>.Text</code> property on the controls. You need to marshal the call across to the UI thread. In WinForms, controls have various ways to help you do this: <pre><code>if (myControl.InvokeRequired) { myControl.Invoke(...); } else { myControl.Text = "something"; } </code></pre> MSDN has an article with examples on it here (VS2010): <a href="http://msdn.microsoft.com/en-us/library/757y83z4(v=VS.100).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/757y83z4(v=VS.100).aspx</a> Update 1: For WPF the model is similar, but includes the Dispatcher: <pre><code>myControl.Dispatcher.Invoke(...); </code></pre> <ul> <li><a href="http://social.msdn.microsoft.com/Forums/eu/wpf/thread/f4f1242b-f75d-4708-a952-ef667b90c9a7" rel="nofollow">MSDN Forum Post</a></li> <li><a href="http://msdn2.microsoft.com/en-us/library/ms741870.aspx" rel="nofollow">MSDN Article</a></li> </ul> Update 2: Of course, it looks like you don't even need to use multi-threaded code here. I would guess the overhead of using the multi-threaded portion is more than the code you eventually call. Simply remove the use of multiple threads from this section and set the properties directly: <pre><code> public SettingApp() { InitializeComponent(); SetDataInTextBox(); } private void SetDataInTextBox() { txtIncAns.Text = Properties.Settings.Default.IncludeAN; txtIncAuthor.Text = Properties.Settings.Default.IncludeAutt; txtIncQuo.Text = Properties.Settings.Default.IncludeQU; txtIncSpBegin.Text = Properties.Settings.Default.IncludeSP; } </code></pre>
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1. This table or related slice is empty.
PostParentId
1. POThe calling thread cannot access this object because a different thread owns it
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1. PTAnswer
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1. USAdam Houldsworth
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1. USAdam Houldsworth
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1. POThe calling thread cannot access this object because a different thread owns it
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1. COI am using the WPF
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 USmrJack
2. CO@mrJack Same story, I've updated my answer.
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 USAdam Houldsworth

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