Re: [DOTNET] What do I need to implement to support DataBinding

[Mark Boulter]

I'll get my sample posted this weekend on GotDotNet - mark

-----Original Message-----
From: Sean Greer (SBI-Chico) [mailto:[EMAIL PROTECTED]] 
Sent: Thursday, May 30, 2002 12:07 PM
To: [EMAIL PROTECTED]
Subject: Re: [DOTNET] What do I need to implement to support DataBinding

For simple binding, the answer is no, you do not need to implement an
interface.  All you need to do to bind the class below to a TextBox is
ensure that FirstName, LastName and Dedication are properties (you can't
bind to instance member variables).

For example, assuming that FirstName is a string property, to bind a
text
box to it do the following:

m_TextBox.DataBindings.Add("Text", anInstanceOfAuthor, "FirstName");

You should also define a property change notification event.  Fill out
the
class for the FirstName example, it would look like this:

class Author
{
        public string FirstName
        {
                get{ return m_sFirstName; }
                set
                {
                        bool bFire = m_sFirtName != value;
                        m_sFirstName = value;
                        if(bFire)
                                Fire_FirstNameChanged();
                }
        }

        public event EventHandler FirstNameChanged;

        private Fire_FirstNameChanged()
        {
                if(FirstNameChanged != null)
                        FirstNameChanged(this, EventArgs.Empty);
        }
}

For complex binding (like the data grid), yes you need to implement one
or
more interfaces.  I haven't done it, so I can't help you.  Look at
IBindingList...

Now would be a great time for Mark Boulter to post his complex data
binding
sample that he mentioned some time ago! ;-)

HTH,

Seang


-----Original Message-----
From: Curtis Koppang [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 30, 2002 11:31 AM
To: [EMAIL PROTECTED]
Subject: [DOTNET] What do I need to implement to support DataBinding


Say I have a simple class which represents a single data entity, like
the
following:

class Author {
    public FirstName;
    public LastName;
    public Dedication;
}

Do I need to implment any specific interfaces to support data binding?
I
checked the archives and most of the information has to do with exposing
Authors (plural) or is outdated (pre-RTM).

Thanks,
curt

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