Question

I have a class which contain 3 strings

e.g.:

class abc
        {

            public string a, b, c;

            public abc(string d, string e, string f)
            {
                a = d;
                b = e;
                c = f;
            }


       };

private void button1_Click(object sender, RoutedEventArgs e)
        {
            abc obj = new abc("abc1","abc2","abc3");

            var MainPage1 = new MainPage();
            MainPage1.DataContext = obj;
        }

and when I try to bind to a textblock it doesn’t bind

<TextBlock Height="23" HorizontalAlignment="Left" Margin="201,66,0,0" Name="textBlock1" **Text="{Binding Path=a}"** VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="201,107,0,0" Name="textBlock2" **Text="{Binding Path=b}"** VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="201,156,0,0" Name="textBlock3" **Text="{Binding Path=c}"** VerticalAlignment="Top" />

I think I am missing something, but need help to find it. thanks

Answer 1

From MSDN: The data binding engine supports public properties, sub-properties, as well as indexers, of any common language runtime (CLR) object.

So use properties instead of public fields:

public class abc
{

   public string a { get; set; }
   public string b { get; set; }
   public string c { get; set; }

   public abc(string d, string e, string f)
   {
      a = d;
      b = e;
      c = f;
   }

}

Now you can set it as the DataContext e.g. in your MainPage’s constructor:

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();

        abc obj = new abc("abc1", "abc2", "abc3");

        this.DataContext = obj;
    }
}