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 index > Windows Workflow Foundation > Misunderstanding about Binding |
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Misunderstanding about Binding |
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hi,
I'm trying to bind the Message property of a MessageBoxActivity to the text property of a custom activty.
in messageboxActivity:
public static DependencyProperty MessageProperty = System.Workflow.ComponentModel.DependencyProperty.Register("Message", typeof(string), typeof(MessageActivity));
private string message;
public string Message
{
get { return message; }
set { message = value; }
}
in custom activity:
public static DependencyProperty TextProperty = System.Workflow.ComponentModel.DependencyProperty.Register("Text", typeof(string), typeof(Activity1));
private string _text;
public string Text
{
get { return _text; }
set { _text = value; }
}
but when I bind message to text, the messagebox is empty, whereas i've filled the Text property before compiling and when I use it in conditions or in a code activity, the Text property got the right value
Any idea in this really basic issu?
Antoine
| | AntoineF | Your properties are declared incorrectly. The .NET properties should be implemented in terms of the corresponding dependency property, like this:
public
static DependencyProperty MessageProperty =
System.Workflow.ComponentModel.DependencyProperty.Register("Message",
typeof(string), typeof(MessageActivity));
public string Message
{
get { return (string)base.GetValue(MessageProperty); }
set { base.SetValue(MessageProperty, value); }
} | | Tomas Restrepo | ok that was the mistake!
thx a lot
ps: just don't forget to add the RETURN in the get for those who will take this code
Edit: Ok it's fixed ;)
| | AntoineF | Duh, yeah, fixed it :) That happens for writing code directly into the post :)
Tomas Restrepo [MVP] | | Tomas Restrepo |
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| reply 4 |
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