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2009-12-15T10:14:24.250
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One way to skin this cat would be by converting the string (in the listbox) into a bool to pass into the IsEnabledProperty... First, create a class that implements the IValueConverter interface, like: <pre><code>public class StringToBoolConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { if (value == null) return false; string keyword = value.ToString(); if (keyword.Equals(parameter.ToString(), StringComparison.CurrentCultureIgnoreCase)) return true; return false; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } #endregion } </code></pre> Notice how you don't need to implement the ConvertBack method? That's because you only need to turn strings into bools, not vice-versa... So you can declare an instance of your converter in the xaml, like <pre><code><Window ... xmlns:local="clr-namespace:WpfApplication1"> <Window.Resources> <local:StringToBoolConverter x:Key="stringToBoolConverter" /> </Window.Resources> </code></pre> And finally, you can bind the TextBox to the ListBox's SelectedValue, like: <pre><code><TextBox Grid.Row="0" Width="90" Height="30" IsEnabled="{Binding ElementName=lbSource, Path=SelectedValue, Converter={StaticResource stringToBoolConverter}, ConverterParameter=ValueForEnabled}"> </TextBox> </code></pre> Note: This will only work if the ListBox contains strings, and you can be sure that the SelectedValue property is a string...
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1. POWPF Bind Textbox IsEnabled to Listbox SelectedItem
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1. USkiwipom
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1. COInteresting approach! I would like to avoid using Converters (it might sound silly but i feel my code is somehow ... scattered around - but i would of course use them if it couldn't be done else-how). Plus point for answering that quickly!! Thanks very much!
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 USSavvas Sopiadis

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