CODEWITHSUNDEEP
c#wpf
idish
idish

Reputation: 3270

how to get the children of an element WPF

I have a stackpanel that contains an Image and a TextBlock. I'm raising an event once double click is being performed by the user.(P.S - I'm adding the StackPanel and it's children (the Image and the TextBlock programatically if it matters).

Now, I need to get the TextBlock element from inside the stackpanel, I understand that I should do it using DataBinding, but I'm a beginner to WPF, and really haven't found any examples about it in the web. I'll be glad for an explanation, thank you very much!

(I learnt about DataBinding a while ago).

Upvotes: 9

Views: 23020

Answers (2)

Clemens
Clemens

Reputation: 128146

A simple way of getting the first child element of a certain type (e.g. TextBlock) is this:

var textBlock = panel.Children.OfType<TextBlock>().FirstOrDefault();

You either get the first TextBlock or null if there isn't any.

Upvotes: 22

Alex F
Alex F

Reputation: 3549

You need to DataBind TextBlock Text (?) element to your class - like so:

In XAML

<TextBlock x:Name="MyTextBlock"
   Text={Binding ShowThis, Mode=OneWay} />

in class:

 public class MyDataContextClass
 {
     private string showThis = string.Enpty;
     public string ShowThis
     {
         get {return showThis;}
         set
         {
              showThis = value;
              if (PropertyChanged != null)
                  PropertyChanged(....);
         }
      }
  }

and you must DataBing Xaml to class. (May be in constructor ?)

  public class MyXamlWindow
  {
       public MyXamlWindow()
       {
             this.DataContext = new MyDataContextClass();
       }
   }

There's a lot of ways to do all above

Upvotes: 0

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