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POSilverlight - Changing button text color created dynamically
 

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  1. POSilverlight - Changing button text color created dynamically
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    <p>I am trying to change a button text color of dynamically created buttons on a Silverlight form using ViewModel. The problem I face is, when I change the color of a button text, all the buttons will get effected. Since, the buttons are dynamically created, I can't have a control on it. </p> <p>I was suggested to write a ForegroundColor property into Model and then attach to the button, I tried as you see in code, but couldn't do much about it.</p> <p>Could you see as what I am doing and help me with your suggestions as I am not sure, I am doing it right way.</p> <p>Thanks</p> <p><strong>Model</strong></p> <pre><code>namespace Web.Models { [DataContract(IsReference = true)] public class Sales { [DataMember] public int SalesId { get; set; } [DataMember] public int ShowOrder { get; set; } [DataMember] public bool Active { get; set; } [DataMember] public bool Regurgitate { get; set; } [DataMember] public int ForegroundColor { get; set; } public Sales(Salese result) { SalesId = result.SalesId; ShowOrder = result.ShowOrder; Active = result.Active; Regurgitate = result.Regurgitate; if (SalesId == 12) { var bytes = System.BitConverter.GetBytes(ForegroundColor); Color btnColor = Color.FromArgb(bytes[3], bytes[2], bytes[1], bytes[0]); SolidColorBrush myBrush = new SolidColorBrush(btnColor); } } } </code></pre> <p>}</p> <p><strong>ViewModel</strong></p> <pre><code>private Brush _foregroundColor = new SolidColorBrush(Colors.Black); public override void Loaded() { OnMainOutcome(); } public Brush ForegroundColor { get { return _foregroundColor; } set { if (_foregroundColor == value) return; _foregroundColor = value; OnPropertyChanged("ForegroundColor"); } } private void OnMainOutcome() { var selectedSalesId = (int)OutcomeCommand.CommandParameter; CurrentSubOutcomes = GetCurrentSubOutcomes(selectedSalesId); foreach (var index in CurrentOutcomes) { if (index.OutcomeId == 12) ForegroundColor = new SolidColorBrush(Colors.Red); else ForegroundColor = new SolidColorBrush(Colors.Black); } } </code></pre> <p><strong>XAML Edited</strong></p> <pre><code> &lt;controls:ChildWindow.Resources&gt; &lt;converters:NumericToColorConverter x:Key="NumericToColorConverter"/&gt; &lt;/controls:ChildWindow.Resources&gt; &lt;ListBox Grid.Row="1" Height="Auto" MinHeight="200" Width="160" Margin="2,2,2,2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ItemsSource="{Binding Path=CurrentOutcomes}" Background="{x:Null}" BorderBrush="{x:Null}"&gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;Button Height="30" Width="150" HorizontalAlignment="Center" Content="{Binding Outcome}" CommandParameter="{Binding SalesOutcomeId }" Command="{Binding Source={StaticResource ViewModel}, Path=OutcomeCommand}" Foreground="{Binding Source={StaticResource ViewModel}, Converter={StaticResource NumericToColorConverter}, Path=ForegroundColor}" /&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p><strong>Converter Class NEW</strong></p> <pre><code> using System; using System.Windows.Data; using System.Windows.Media; using System.Windows; namespace Converters { public class NumericToColorConverter : IValueConverter { static readonly SolidColorBrush RED_BRUSH = new SolidColorBrush(Colors.Red); static readonly SolidColorBrush BLUE_BRUSH = new SolidColorBrush(Colors.Blue); public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { //Int32 id = System.Convert.ToInt32(value); //LinearGradientBrush brush = new LinearGradientBrush(); //brush.StartPoint = new Point(0, 1); //brush.EndPoint = new Point(0, 0); //brush.GradientStops.Add(new GradientStop() //{ // Color = Colors.White, // Offset = 0 //}); //brush.GradientStops.Add(new GradientStop() //{ // Color = Color.FromArgb( // 200, // System.Convert.ToByte((id * 103) % 256), // System.Convert.ToByte((id * 157) % 256), // System.Convert.ToByte((id * 233) % 256) // ), // Offset = 1 //}); //return brush; var OutcomeId = (int)value; if (OutcomeId == 12) { return RED_BRUSH; } else { return BLUE_BRUSH; } } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } } </code></pre> <p>}</p>
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