Is it possible to bind to a field?
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Thread: Is it possible to bind to a field?

  1. #1

    Is it possible to bind to a field?

    Colleagues,

    I have a text box which binds to data:
    Code:
    <TextBox x:Name="textBox1" Text="{Binding Path=Comments}" Width="200" Margin="0,4" />
    If Comments is declared as a property, the binding works:
    Code:
    public int Comments { get; set; }
    However, if Comments is declared as a field, the binding doesnít work:
    Code:
    public int Comments;
    I havenít seen an example where a control was bound to a field, but I havenít seen any indication that itís a bad practice or not possible.

    - Nick

  2. #2
    Join Date
    Mar 2004
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    Prague, Czech Republic, EU
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    Re: Is it possible to bind to a field?

    As far as I know, it is not possible to bind to field. The purpose is simple: fields are implementation details, not parts of object's contract. Making field accessible from outside the class breaks encapsulation, so is bad practice. Despite the fact that there is not way how to let clients of the field know e.g. that the value changed.
    • Make it run.
    • Make it right.
    • Make it fast.

    Don't hesitate to rate my post.

  3. #3
    Arjay's Avatar
    Arjay is offline Moderator / MS MVP Power Poster
    Join Date
    Aug 2004
    Posts
    11,307

    Re: Is it possible to bind to a field?

    It isn't possible.

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