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Tabcontrol, datacontext doesn't update textbox

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This is a migrated thread and some comments may be shown as answers.
Gilbert van Veen
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Gilbert van Veen asked on 05 Mar 2010, 01:58 PM
Hi everyone,

I have a tabcontrol which exists out of 6 tabs. For each tab I set the Datacontext. When I click on a tab then it opens and shows me the textboxes (which are bound to the datacontext) and the data is shown.

When I close the screen then I run some test to see if every textbox is not empty. I do this by calling MyTextbox.Text etc.

Now there is one strange thing. When the check runs only text is found in textboxes which are shown on the screen once. F.i. if I have values in a textbox on tabpage 6 but I don't open this tab then the system thinks that these textboxes are still empty. In other words the datacontext is not filling in these textboxes? The textboxes are only filled (linked to the datacontext) when they are shown on the screen?

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Gilbert van Veen
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answered on 05 Mar 2010, 02:14 PM
I agree that the answer is also in my question. I can check the values of the DataContext instead of the textboxes but I was wondering if this is correct.
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Valentin.Stoychev
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answered on 09 Mar 2010, 08:32 AM
Hi Gilbert van Veen,

this is expected behavior - the tabs that are not displayed are still not part from the visual tree and thus do not receive the data context. Once you select the tab - it should be ok.

Kind regards,
Valentin.Stoychev
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Gilbert van Veen
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Gilbert van Veen
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Valentin.Stoychev
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