CODEWITHSUNDEEP
wpfbinding
DotNetBeginner
DotNetBeginner

Reputation: 1207

WPF element property binding

I'v got two drop down lists. When selectedIndex for both of these is not -1 it should enable a button. How element property binding can be used here ?

Upvotes: 0

Views: 352

Answers (2)

Damian
Damian

Reputation: 2789

MultiBindings and MultiValueConverters work well, but my first advice to you would be to use M-V-VM. If you are using M-V-VM then you would simply tie the button enabling to a RelayCommand or to a property on your ViewModel such as IsActionAvaialable. I find that using M-V-VM results in me needing much fewer ValueConverters (just my 2 cents).

Upvotes: 2

Paul Wheeler
Paul Wheeler

Reputation: 20140

You need to use a MultiBinding to bind the IsEnabled property of the Button to multiple SelectedIndex properties, and then you need an IMultiValueConverter to convert the numbers to a Boolean. Here is a great example: http://www.developingfor.net/wpf/multibinding-in-wpf.html

Upvotes: 2

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