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Questions tagged [two-way-binding]

298 questions
17
votes
2 answers

DataGridTemplateColumn Two way binding is not working

I've got a datagrid I've bound to a SqlDataApter. If I set up the XAML for the grid using DataTextColumn as illustrated in the code below it works perfectly
David Potter
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15
votes
1 answer

How to update the text of all EditTexts elements in a RecyclerView with two-way data binding

I have an RecyclerView which holds some CardViews and each CardView contains EditText which multiplies the user given amount times a specific rate (the rate comes from an endpoint and the rate is different per row). For the CardViews I am using data…
Fahri Can
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12
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3 answers

How to accomplish two-way data binding in WPF?

I have heard a lot about two-way bindings in WPF, but I'm not entirely clear on how to accomplish it or what it actually means. I have a ListView with a bunch of items in it. When the user selects a new item, a TextBox in the application will change…
Deniz Dogan
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11
votes
5 answers

Angular Two-Way Data Binding and Watching for Changes in Parent Component

It seems there is no way to watch changes in the parent component when using two-way data binding. I have a custom input component for collecting a tag list. Two-way data binding is setup and working between this component and its parent. // the…
Ben Racicot
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11
votes
1 answer

Cannot assign to read only property 'dataChange' of object '#'

I am trying to use a two way binding in Angular 4. Here is my component code: @Component({ selector: 'form-validation', templateUrl: './form.validation.template.html', encapsulation: ViewEncapsulation.None }) export class…
fred00
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10
votes
2 answers

Two way binding on angular 6 reactive form

I am trying to create a complex reactive form with nested component that is populated with a data object. The behavior I am trying to achieve is very similar to the two-way data binding of a template-driven form: when the user edits an input of the…
Idan Abrashkin
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10
votes
3 answers

How can I bind an ObservableCollection to TextBoxes in a DataTemplate?

I am trying to successfully TwoWay bind an ObservableCollection to TextBoxes in a DataTemplate. I can get the data to display properly, but I am unable to change the list data through the UI. I have a Model class named 'model' which contains an…
Johnathan1
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9
votes
3 answers

Two way binding between components in angular 2-4

I would like the child component value to be bound to the parent component. How to accomplish this when @Input() and [(ngModel)] are not enough ? here is a plunker
Bellash
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8
votes
2 answers

Angular textarea matInput: how can set max length/line + max number of lines

The following html snippet of code:
Learning is a mess
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8
votes
3 answers

Handle Model Change in Angular 5 Component (Two-way-binding)

I'm currently working on an angular 5 application. I try to alter a member variable of my component in an input on the view and use the variable in my component after the change. My structure is as follows: Folder: my-test my-test.component.html…
TimHorton
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6
votes
2 answers

Pass values to child component Angular 7

I went though this, and understand that after declaring a data-bound input property, Angular should automatically update the input value. In the component I created, it doesn't seems like that. When I click on a item on the grid on the parent it…
Robert Nish
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6
votes
3 answers

Two way binding on custom view

I have a componed view in android contains several textViews and one EditText. I defined an attribute for my custom view called text and getText, setText methods. Now I want to add a 2-way data binding for my custom view in a way its bind to inner…
Alireza A. Ahmadi
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6
votes
3 answers

two-way binding - nested object - angular - Cannot read property of undefined

I want to use [(ngModel)] for a nested object, but is giving me an error Cannot read property 'mxn' of undefined these are the data structure of my models: company.model.ts import Currency from './currency.model'; class Company { _id: string; name:…
Milad
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6
votes
2 answers

Angular 2 - How to get rid of extra decimals in angular binding?

i have such a statement in my view and the binding has value lets says 6970.87127381382131831 but, i want to limit it at 2 decimal at most. Since i am listing elements with ngFor, could not use an object to limit it with .toFixed(2). Thank you all…
ozercevikaslan
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5
votes
3 answers

Two-way data binding with converter doesn't update source

I've got a data binding set up with a converter to transform an awkward XML source to a display- and editing- convenient tree of internal classes. Everything works great for reading from the XML source, but I'm having a devil of a time trying to…
dthorpe
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