{"id":61,"date":"2011-02-08T10:47:00","date_gmt":"2011-02-08T10:47:00","guid":{"rendered":"https:\/\/wdev-blog.azurewebsites.net\/index.php\/2011\/02\/08\/mvvm-basic-binding-reflecting-multiple-targets\/"},"modified":"2011-02-08T10:47:00","modified_gmt":"2011-02-08T10:47:00","slug":"mvvm-basic-binding-reflecting-multiple-targets","status":"publish","type":"post","link":"http:\/\/panahy.nl\/index.php\/2011\/02\/08\/mvvm-basic-binding-reflecting-multiple-targets\/","title":{"rendered":"MVVM Basic Binding – reflecting multiple targets"},"content":{"rendered":"
I have a ViewModel implementing INotifyPropertyChanged interface and have at least two properties Value and IsChanged. When I bind two Textboxes to the Value on source and one check box to IsChanged property of the source I noticed that user changes to Value does not reflect the other target controls!<\/div>\n
<\/div>\n
This behavior is due to the fact that my ViewModel was not provided as a field in my container ViewModel and rather it was created when needed.<\/div>\n
public<\/span> PandViewModel PandViewModel
{
   <\/span>get<\/span>
   {
       <\/span>return<\/span> listIndex < <\/span>0<\/span>
       ? <\/span>null<\/span>
        : <\/span>new<\/span> PandViewModel(panden[listIndex]);
   }
}
<\/span><\/pre>\n
Moving the PandViewModel to a local field in this container class, or even putting it into an ObservableCollection will sort out the problem:    <\/p>\n
public<\/span> PandViewModel PandViewModel
{
    <\/span>get<\/span>
    {
        <\/span>return<\/span> listIndex < <\/span>0<\/span>
        ? <\/span>null<\/span>
        : pandenVM[listIndex];
    }
}<\/span><\/pre>\n
See also a nice article over Binding on MSDN<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
I have a ViewModel implementing INotifyPropertyChanged interface and have at least two properties Value and IsChanged. When I bind two Textboxes to the Value on source and one check box to IsChanged property of the source I noticed that user changes to Value does not reflect the other target controls! This behavior is due to … Continue reading “MVVM Basic Binding – reflecting multiple targets”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[57,58],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"post-thumbnail":false},"uagb_author_info":{"display_name":"Pouya Panahy","author_link":"http:\/\/panahy.nl\/index.php\/author\/pouya\/"},"uagb_comment_info":0,"uagb_excerpt":"I have a ViewModel implementing INotifyPropertyChanged interface and have at least two properties Value and IsChanged. When I bind two Textboxes to the Value on source and one check box to IsChanged property of the source I noticed that user changes to Value does not reflect the other target controls! This behavior is due to…","_links":{"self":[{"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/posts\/61"}],"collection":[{"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/comments?post=61"}],"version-history":[{"count":0,"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/posts\/61\/revisions"}],"wp:attachment":[{"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/media?parent=61"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/categories?post=61"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/panahy.nl\/index.php\/wp-json\/wp\/v2\/tags?post=61"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}