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POsource updating in wpf binding
 

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  1. POsource updating in wpf binding
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    <p>I have a WPF window and give it a DataContext, when targets change it work well (by using <code>UpdateSourceTrigger</code>), but when one of DataContext properties (source) change, the target doesn't update. Is there any way to force target binding update when source updates? Is there something like <code>ObservableCollection</code> for one item ?</p> <p>This is my class:</p> <pre><code>public class PaymentDetailInfo : INotifyPropertyChanged { public Payment Payment { get; set; } public int SumOfValidNormalOverTimePrice { get { return 100 * Payment.ConsideredValidNormalOverTime / 60; } } public int SumOfInvalidNormalOverTimePrice { get { return 100 * Payment.ConsideredInvalidNormalOverTime / 60; } } public int SumOfOverPriceConst { get { int _sumOfOverPriceConst = 0; if (!Payment.ValidNormalOverTimePriceIsPercent) _sumOfOverPriceConst += SumOfValidNormalOverTimePrice; if (!Payment.InvalidNormalOverTimePriceIsPercent) _sumOfOverPriceConst += SumOfInvalidNormalOverTimePrice; _sumOfOverPriceConst += Payment.RewardPrice; return _sumOfOverPriceConst; } } public event PropertyChangedEventHandler PropertyChanged; public void OnPropertyChanged(PropertyChangedEventArgs e) { if (PropertyChanged != null) PropertyChanged(this, e); } } </code></pre> <p>Some elements in my Window are bound to <code>Payment</code> of <code>PaymentDetailInfo</code> (payment is a database table), so as an example user can change <code>Payment.ConsideredValidNormalOverTime</code> then <code>PaymentDetailInfo.SumOfValidNormalOverTimePrice</code> will change and then <code>PaymentDetailInfo.SumOfOverPriceConst</code> will change. But target that is bound to <code>PaymentDetailInfo.SumOfOverPriceConst</code> does not update even though the datacontext of my form is updated.</p>
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    1. USDdW
    1. USMasoumeh Karvar
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    1. COImplement `INotifyPropertyChanged` interface on your data class to update target bindings. This is standard way of updating target using MVVM.
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      1. POsource updating in wpf binding
      1. USRohit Vats
    2. COCan you post your code please?
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      1. POsource updating in wpf binding
      1. USDaniel
 

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