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POMVVM refresh model
 

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    <p>I have a project in WPF with the MVVM-Pattern.</p> <p>The view has a listview of Persons(FirstName, LastName, Town) and next to the list are the details of the person(FirstName,LastName,ZIP) with a button(Save). If you click to a person on the left side, the person details on the right side will load automatically.</p> <p>In the ViewModel I have an ObservableCollection of Person-Models. (Person list)</p> <p>The Person Model includes some propertys like FirstName, LastName, Town, Zip. (Details).</p> <p>When I change the ZIP, the Town will updated automatically(in the setter switch-case) e.g. ZIP '11111' Town 'Town1' / ZIP '22222' Town 'Town2'.</p> <p>The Person Model includes also an ICommand "SavePerson" to Save Changes.</p> <p>Now when i click to an item in the listview the details will load automatically. When I change the FirstName or LastName and click "Save" the listview will change the First and the LastName of the selected item, that's ok. Now when I change the ZIP from '12345' into '11111' the town in the listview is still the old one and not 'Town1'.</p> <p>Have you an idea to fix this problem, without to implement the INotifyPropertyChanged-Interface in the Model?</p> <p>Some code: Model: </p> <pre><code>public class Person { private string _firstName = string.Empty; private string _lastName = string.Empty; private string _zip = string.Empty; private string _town = string.Empty; public string FirstName { get { return _firstName; } set { _firstName = value; } } public string LastName { get { return _lastName; } set { _lastName= value; } } public string ZIP { get { return _zip; } set { switch (value) { case "11111": this.Town = "Town1"; break; case "22222": this.Ort = "Town2"; break; default: break; } _zip = value; } } public string Town { get { return _town; } set { _town= value; } } public ICommand SaveNameCommand { get { return new DelegateCommand((param) =&gt; this.SaveName(param)); } } private void SaveName(object parameter) { string[] param = ((string)parameter).Split(new char[] { ':' }); FirstName = param[0]; LastName = param[1]; PLZ = param[2]; } } </code></pre> <p>ViewModel:</p> <pre><code>public class PersonList { private readonly ObservableCollection&lt;Person&gt; _persons = new ObservableCollection&lt;Person&gt;(); private Person _currentSelectedPerson = new Person(); public PersonList() { this._persons.Add(new Person() { FirstName = "First1", LastName = "Last1", Ort = "Ort1", PLZ = "112" }); this._persons.Add(new Person() { FirstName = "First2", LastName = "Last2", Ort = "Ort2", PLZ = "122" }); this._persons.Add(new Person() { FirstName = "First3", LastName = "Last3", Ort = "Ort3", PLZ = "1132" }); } public IEnumerable&lt;Person&gt; Persons { get { return this._persons; } } } </code></pre>
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    1. USChristian M.
    1. USChristian M.
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    1. COYou should add some code to get an answer? It is hard to tell what went wrong
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      1. USJehof
    2. COIf you can't find the problem with your code in front of you, how are a bunch of strangers meant to work it out with no code at all!
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      1. USGusdor
 

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