Two way data binding for controls

Calvin Cutts

Hi, I have a textbox and a listbox (on separate forms), I've set the datasource of the listbox to be a class that contain a bindinglist which is populated by the textbox, making it so I can type in the textbox and populate the listbox.

What I'd like to also do is make a binding in the other direction at the same time, I want to click on an item in the listbox and have that text be shown in the textbox, thereby having a two way bind between the controls.

Could someone tell me how that is done please?

Thanks

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Laxmidhar Sahoo6y ago
hi why datasource added with textbox not in listview
Calvin Cutts6y ago
Do you mean like this:

lstbHistory.SelectedItem = "{binding TextHistory.SelectedHistoryText, mode=twoway}";

and this

txtInput.Text = "{binding TextHistory.SelectedHistoryText}";

lstbHistory is the listbox, txtInput is the textbox and TextHistory.SelectedHistoryText is the variable that holds the string, it's in a static class.

This is a windows form app.
Ashutosh Gupta6y ago
this can be achived eaisly, make sure the selectedItem of lisbox is a binded with textbox.
e.g.
if you have property like public string MyText { get ;set;}
this property should be binded with listbox SelectedItem = "{binding MyText, mode = twoway}"
and
Calvin Cutts6y ago
I tried to create a binding source object (bsource), I set its datasource to the correct variable but I don't know what third parameter to use here:

txtInput.DataBindings.Add("Text", bsource);

txtInput is the textbox.