can i set single property using sender as object and also bind property from Xaml

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Closed 13 hours ago.

(Private feedback for you)

Unable to apply value for bind property if Object is used.

Void buttonClick(object sender){
chnageColor = Gray; // turns all label foreground to gray
Label l1 = sender as Label;
l1.foreground = blue;
MessageBox.show("Label 1 clicked");
chnageColor = Gray; // turns all label foreground to blue
}

when i try to set color to l1 label using chnageColor (foreground={Binding changecolor}) it is not working.

XAML:-

    </Label>
    <Label x:Name="Label2" Width="200" Height="40" Foreground="{Binding chnageColor}">
        <Label.InputBindings>
            <MouseBinding Command="{Binding buttonClick}" CommandParameter="{x:Reference Label2}" MouseAction="LeftClick" />
        </Label.InputBindings>
    </Label>/

    </Label>
    <Label x:Name="Label3" Width="200" Height="40" Foreground="{Binding chnageColor}">
        <Label.InputBindings>
            <MouseBinding Command="{Binding buttonClick}" CommandParameter="{x:Reference Label3}" MouseAction="LeftClick" />
        </Label.InputBindings>
    </Label>/

Answer 1

I am not sure if I fully understood what needs to happen, if you want to change the foreground of Label you could try to refer to the code below.
The MouseLeftButtonDown event of the Label changes the foreground of the clicked Label. If I misunderstood what you mean, please point it out and let me know .
The code of xaml is as follows:

<StackPanel>  
        <Label Name="Label1" Height="30" Content="Label1" MouseLeftButtonDown="Button_Click" Foreground="{Binding changeColor}"> </Label>  
        <Label Name="Label2" Height="30" Content=" Label2" MouseLeftButtonDown="Button_Click" Foreground="{Binding changeColor}" > </Label>  
    </StackPanel>  

The code of xaml.cs is as follows:

using System.Windows;  
using System.Windows.Controls;  
using System.Windows.Input;  
using System.Windows.Media;  
namespace ChangeLabelForegroundColorBindCommand  
{  
  public partial class MainWindow : Window  
  {  
    public string changeColor { get; set; }  
    public MainWindow()  
    {  
      InitializeComponent();  
      changeColor = "gray";  
      DataContext = this;  
    }  
    private void Button_Click(object sender, MouseButtonEventArgs e)  
    {  
         Label label = sender as Label;  
         label.Foreground = Brushes.Blue;  
         MessageBox.Show(label + " is clicked");  
         label.Foreground = Brushes.Gray;  
    }  
  }  
}  

The result is shown in the figure: