Is it possible to data bind a combo box and a text box between them?

Question

Let's say you have a combobox and a textbox.

The combo box contains a list of items and I would want to bind the textbox "text" property to the current combobox selection.

In WPF this could be done but I've not found a way in WinForms.

Is there a way or is WinForms too limited?

Notes:

• I know I could use WPF instead, but the project is already in WinForms and rewriting it is out of the question.
• I'm asking about a combobox and textbox but this could be any other combinations.
• I'm looking for a way to do it from design time it at all possible.

Answer 1

Yes you can bind the text box to the item (Text) selected in a combo box:

   public partial class Form1 : Form {
      Binding binding;

      public Form1() {
         InitializeComponent();

         binding = new Binding("Text", comboBox1, "Text");
         textBox1.DataBindings.Add(binding);
      }
   }

Answer 2

Here you go: These lines creates a delegate, whose begin called whether the selected index has been changed under the item. Afterwards it sets the textboxs, text property to the selected items text from the combobox :)

            TextBox txtbox = new TextBox();
            ComboBox cob = new ComboBox();
            cob.SelectedIndexChanged += new EventHandler(delegate(object sender, EventArgs e) { if (cob.SelectedIndex > -1) txtbox.Text = cob.Items[cob.SelectedIndex].ToString(); });

Answer 3

You could Add an onSelectedIndexChange event handler on the combo box and modify the textbox form there.