-
November 23rd, 2009, 02:20 PM
#1
Can’t seem to set the DataContext in XAML
Colleagues,
I’m experimenting with data binding. I wrote a simple test program with only one object representing a person and two TextBoxes bound to its properties (first and last names), which reside in the StackPanel layout. In the beginning, I was assigning the DataContext in the window’s constructor:
Code:
base.DataContext = m_objPerson;
That worked.
Then I’ve tried a different approach. Instead of assigning DataContext in code, I would like to assign it in XAML. StackPanel layout has a DataContext property. Shouldn’t it set the DataContext properties for all of the components contained in the layout? I’ve removed the assignment from code and added an assignment in XAML:
Code:
<StackPanel DataContext="m_objPerson">
Unfortunately, the text boxes were no longer bound. Could anyone help me find the error?
Cheer,
-Nick
-
November 24th, 2009, 02:47 AM
#2
Re: Can’t seem to set the DataContext in XAML
I think that to be able to set it this way, you need to have m_objPerson defined as "static resource". In debug, watch Output window, there I would expect error message like "m_objPerson is not defined".
- Make it run.
- Make it right.
- Make it fast.
Don't hesitate to rate my post.
-
November 26th, 2009, 01:43 AM
#3
Re: Can’t seem to set the DataContext in XAML
Originally Posted by boudino
I think that to be able to set it this way, you need to have m_objPerson defined as "static resource".
Could you explain how to define the static resource? It probably should look like:
Code:
<Window.Resources>
<!-- what goes here? -->
</Window.Resources>
But what goes in the middle?
Originally Posted by boudino
In debug, watch Output window, there I would expect error message like "m_objPerson is not defined".
I'm not getting any messages in the output window (me at all).
-
November 30th, 2009, 11:36 AM
#4
Re: Can’t seem to set the DataContext in XAML
Kender, rather than explaining here, I suggest you get a book on WPF. A book will be able to explain these WPF concept much better than what we could do in a forum.
Tags for this Thread
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
|
Click Here to Expand Forum to Full Width
|