Question : WinForm Binding to child on UserControl

Hello,

I have a custom user control that basically has a combobox on it. ( i do some custom painting.)

I would like user of my control to beable to put this control on their form and bind to it like if it were a combobox.

Thus far I have been unsuccesful - I've manage to bind the datasource but I can't seem to add a databindings to the control.

So basically:
CustomComboBox ccb = new CustomComboBox();

ccb.DataSource = somDS;
ccb.tcbKeyway.DisplayMember = "someMemeber";

works fine. BUT

ccb.DataBindings.Add("Text",someObject, "someProperty");

does NOT work.

Thanks

MAC

Here is a simplified version of my control:

         
           
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          public class CustomComboBox : UserControl
    {

        [Category("Data")]
        public ComboBox.ObjectCollection Items
        {
            get { return this.comboBox1.Items; }
        }

        public object SelectedItem
        {
            get { return this.comboBox1.SelectedItem; }
            set { this.comboBox1.SelectedItem = value; }
        }

        public override String Text
        {
            get { return this.comboBox1.Text; }
            set { this.comboBox1.Text = value; }
        }

        //[Category("Data")]
        //public new ControlBindingsCollection DataBindings
        //{
        //    get { return this.comboBox1.DataBindings; }
        //}

        //[Category("Data")]
        //public object DataSource
        //{
        //    get { return this.comboBox1.DataSource; }
        //    set { this.comboBox1.DataSource = value; }
        //}

        //private BindingContext bindingContext;

        //public override BindingContext BindingContext
        //{
        //    set
        //    {
        //        bindingContext = value;
        //        OnBindingContextChanged(EventArgs.Empty);
        //    }
        //    get
        //    {
        //        // check if a BindingContext has been assigned
        //        if (bindingContext != null)
        //            return bindingContext;

        //        // check if we have a parent
        //        if (Parent != null)
        //            return Parent.BindingContext;

        //        // otherwise return null
        //        return null;
        //    }
        //}

        //protected override void OnParentBindingContextChanged(EventArgs e)
        //{
        //    if (bindingContext == null)
        //        OnBindingContextChanged(EventArgs.Empty);
        //}

        //[Category("Data")]
        //public String DisplayMember
        //{
        //    get { return this.comboBox1.DisplayMember; }
        //    set { this.comboBox1.DisplayMember = value; }
        //}

        public event EventHandler SelectedValueChanged
        {
            add
            { this.comboBox1.SelectedValueChanged += value; }

            remove
            { this.comboBox1.SelectedValueChanged -= value; }
        }

        public object DataSource
        {
            get { return comboBox1.DataSource; }
            set { comboBox1.DataSource = value; }
        }

        public string DisplayMember
        {
            get { return comboBox1.DisplayMember; }
            set { comboBox1.DisplayMember = value; }
        }

        public string ValueMember
        {
            get { return comboBox1.ValueMember; }
            set { comboBox1.ValueMember = value; }
        }
}

           
         

Answer : WinForm Binding to child on UserControl

This link => http://atakala.com/browser/Item.aspx?user_id=amos&dict_id=65
shows an example of using "Text" property to databind. One thing is it says to handle the TextChanged / SelectedValueChanged events to update the datasource.

Question : WinForm Binding to child on UserControl

Answer : WinForm Binding to child on UserControl

This link => http://atakala.com/browser/Item.aspx?user_id=amos&dict_id=65shows an example of using "Text" property to databind. One thing is it says to handle the TextChanged / SelectedValueChanged events to update the datasource.

This link => http://atakala.com/browser/Item.aspx?user_id=amos&dict_id=65
shows an example of using "Text" property to databind. One thing is it says to handle the TextChanged / SelectedValueChanged events to update the datasource.